15916( 3) - 03-Oct-2019 19:21:09 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15916 Version: 3 Check-in Time: 03-Oct-2019 19:21:09 STScI Edit Number: 0 Title Exocometary gas inventories at the epoch of volatile delivery ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Luca Matra Smithsonian Institution Astrophysical Y Observatory CoI: Dr. Aki Roberge NASA Goddard Space Flight Center N CoI: Dr. Seth Redfield Wesleyan University N CoI: Dr. Karin Oberg Harvard University N CoI: Dr. Meredith Hughes Wesleyan University N CoI: Dr. David Wilner Smithsonian Institution Astrophysical N Observatory CoI: Dr. ANTONIO HALES Associated Universities, Inc. N ------------------------------------------------------------------------------------ Abstract The presence of exocometary gas in young (10-100 Myr) debris disks presents a unique opportunity to probe the composition of exocomets during the late stages of terrestrial planet formation. This is the evolutionary stage when ice-rich impacts are proposed to change the volatile environment of terrestrial planets, setting the stage for prebiotic chemistry. In these young exocometary belts, high concentrations of debris result in frequent collisions and release of molecular gas, which rapidly photodissociates to produce atomic gas. Atomic inventories can only be comprehensively probed at UV wavelengths with HST, in absorption against the stellar background, within systems that are viewed edge-on. We propose a UV chemical survey of gas released in two newly discovered, 15-16 Myr old exocometary belts around A stars HD110058 and HD131488. These are ideal targets as they are edge-on, rich in molecular gas based on CO emission detected by ALMA, and present circumstellar gas absorption at optical wavelengths. Exploiting the ALMA-HST synergy will allow us to put better constraints on the composition of these belts than ALMA observations alone can provide. We will use COS and STIS to measure abundance ratios such as C/O, C/N and C/Fe and further model the elemental composition of exocometary belts. These ratios will be compared to exoplanets, young disks and Solar System comets, providing a missing link in the study of planet formation and physical-chemical evolution. Finally, splitting our observations into several visits will enable us to look for star-grazing exocomets, providing evidence that inward scattering, and potentially volatile delivery, is ongoing in these systems. ------------------------------------------------------------------------------------ Observations Description ------------------------ Our goal is to carry out a UV spectroscopic line survey of the edge-on exocometary belts around A stars HD110058 and HD131488, detecting all species of interest (N I, O I, C I, C II, C IV, CO, Mg I, Mg II, Al I, Al II, Si I, Si II, S I, Fe I and Fe II) seen in absorption against the stellar continuum. The 15916( 3) - 03-Oct-2019 19:21:09 - [ 2] shortest wavelength region we will observe in the FUV covers strong resonantlines of N I(1200A), O I(1302A)and C II(1335A). So far, these have been found to be the most abundant species in exocometary gas belts (e.g. Roberge et al., 2006; Wilson et al., 2019). Being the species of interest with the shortest wavelength transitions (where the stars are faintest), N I (1200A) COS observations drive our sensitivity and hence orbit request. Our calculations show that, even if carbon is depleted by a factor of 10 compared to the famous exocometary gas host beta Pictoris, the strength of the N I line ensures that we can detect nitrogen in our targets even for C/N ratios as high as found for the bulk silicate Earth (C/N~49). We note that atomic hydrogen may be abundant if water is being released with the observed CO (and then rapidly dissociated) from the exocomets. However, Lyman series detection of H I is prevented by severe airglow contamination, so we deem hydrogen detection unfeasible. Given the steeply decreasing stellar spectrum at shorter FUV wavelengths, meeting our sensitivity requirement to detect these transitions requires use of COS below ~1500A. Therefore, we request use of the COS G130M grating, centered at 1222A, covering resonant lines of C I, C II, O I, N I and Si II. Longward of 1500A, STIS is able to detect transitions of interest, and we prefer it to COS given its advantage in resolving power (R=114000 vs R=14000 for COS) which is crucial to extract information on the absorption profiles and enable accurate modelling of the lower resolution COS spectra. At the velocity resolutions of ~2.6 (STIS) and ~21 km/s (COS), we expect that lines will be unresolved, unless heavily saturated, in which case we will use weaker, optically thin lines of the same species to constrain the gas column densities. The fact that lines will be unresolved is acceptable since we are most interested in column density, rather than line broadening measurements; the gas excitation temperature will instead be retrieved from comparison of absorption lines originating from different low-lying energy levels (available e.g. for C I, C II, O I and CO, as shown in Roberge et al., 2000). Note that the resolution of STIS is also sufficient to separate circumstellar absorption lines from any absorption lines originating from the local interstellar medium (ISM). Optical spectroscopy indicates that potential ISM lines lie ~11.5 and ~7.2 km/s away from the stellar velocities of HD110058 and HD131488 (Rebollido et al., 2018). While COS will not be able to resolve these from circumstellar absorption, for the affected species we will be able to establish the contribution of the circumstellar component using a combination of 1) absorption lines from energy states above ground covered by COS, which are not expected from ISM gas, 2) other absorption lines from the same species observed at higher resolution by STIS, and 3) lines from other species expected to have similar ISM abundances observed by STIS. We request four STIS spectral settings, all observed with the narrow spectroscopic slit (0.2"x0.09") recommended for the highest spectral resolution gratings and for minimizing air- glow contamination. In the FUV, we will use the E140H grating (i1562) to cover the CO A-X 0-0 (1544A), 1-0(1510A) and 2-0(1478A) bands, as well as resonant lines of C I(1560A, 1657A), C IV (1548A) and Al II (1671A). In the NUV, we will use the E230H grating in 3 settings (c1763, i2463, and i2912) to cover the region between 1600 and 3000 A containing resonant transitions of remaining species S I Al I, Si I, Fe I, Fe II, Mg I and Mg II. 15916( 3) - 03-Oct-2019 19:21:09 - [ 3] To predict UV stellar fluxes, since the shortest wavelength measurement available for both stars is U band, we ran a fit to the UBV, JHK, and Gaia G, BP and RP photometry using MESA evolutionary tracks through the isochrones python code. We use the best fit parameters (including Teff and AV as reported here in APT) to derive a probability distribution for predicted GALEX FUV magnitudes. To double-check, we also ran a fit using the pysynphot package which employs the same Castelli and Kurucz models as the ETC. While the Castelli-Kurucz best-fit Teffs are cooler by a few hundred K, the fits are also less extincted compared to the MESA results, leading overall to a similar predicted distribution of GALEX FUV magnitudes. Note that the spectral types reported by SIMBAD (A0V and A1V) come from a very old spectral catalog from optical plates measurements, and likely less reliable than the photometric fits carried out here. We will also search for variability on day/week timescales in the line wings, originating from star-grazing exocomets. We request 4 (3) separate COS visits for HD110058 (HD131488) and 2 separate STIS visits covering the 1763 A setting for HD110058; these visits will be separated by 3-14 days from one another. ------------------------------------------------------------------------------------ 15916( 3) - 03-Oct-2019 19:21:09 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD131488 STAR, A0-A3 V-IV, RA=14H55M8.0036S +/- 0.0000974", J2000 V = 8.012 +/- 0.013 Johnson U = CIRCUMSTELLAR MATTER, DEC=-41D07'13.75" +/- 0.0000508" 8.22+-0.02 mag. Model fits to UBV, Gaia DISK G, BP, RP, 2MASS J, H, K yield: Teff = 8750(-160, +170) K, A_V=0.09(-0.05, +0.05), predicted GALEX FUV: 11.9(-0.3, + 0.3) AB mag Reference Frame: ICRS Extended: NO Comments: See Proposal Description from how stellar parameters were derived. For ETC calculations for wavelength settings below ~1800 A, we use the GALEX FUV AB mags predicted by models (reported under 'Other Fluxes' above) and a Castelli and Kurucz ETC spectrum with a Teff of 8750 K. The ETC calculations attached to this APT proposal assume the median of the predicted GALEX FUV AB mag distribution. We also ran calculations with the brightest GALEX FUV AB magnitude in the predicted distribution (~10.5), which cleared the ETC with no issues. For ETC calculations for wavelength settings above ~1800 A, we use the measured U-band magnitude reported here and a Castelli and Kurucz Teff of 8750 K. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 -0.0016065594075965089 -0.022293 0.0064676 ------------------------------------------------------------------------------------------------------------------------------------ 15916( 3) - 03-Oct-2019 19:21:09 - [ 5] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 STAR, A0-A3 V-IV, RA=12H39M46.1491S +/- J2000 V = 7.992 +/- 0.011 Johnson U = CIRCUMSTELLAR MATTER, 0.0000626", DEC=-49D11'55.78" 8.18+-0.02 mag. Model fits to UBV, Gaia DISK +/- 0.0000385" G, BP, RP, 2MASS J, H, K yield: Teff = 8330(-200, +510) K, A_V=0.13(-0.07, +0.16), predicted GALEX FUV: 12.8(-0.9, + 0.4) AB mag Reference Frame: ICRS Extended: NO Comments: See Proposal Description from how stellar parameters were derived. For ETC calculations for wavelength settings below ~1800 A, we use the GALEX FUV AB mags predicted by models (reported under 'Other Fluxes' above) and a Castelli and Kurucz ETC spectrum with a Teff of 8250 K. The ETC calculations attached to this APT proposal assume the median of the predicted GALEX FUV AB mag distribution. We also ran calculations with the brightest GALEX FUV AB magnitude in the predicted distribution (~10.5), which cleared the ETC with no issues. For ETC calculations for wavelength settings above ~1800 A, we use the measured U-band magnitude reported here and a Castelli and Kurucz Teff of 8250 K. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 -0.0030244222700906544 -0.01489 0.0076932 ------------------------------------------------------------------------------------------------------------------------------------ 15916( 3) - 03-Oct-2019 19:21:09 - [ 6] Visit: 01 (COS FUV HD110058) Visit Requirements: On Hold Comments: Additional Comments: COS FUV Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 30 S (30 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 30 S (30 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 1600 S G FP-POS=ALL, BUFFER-TIME=12184 see below (7588 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD110058 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 1865.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 2 2919 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 3 1402 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 3 1402.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 7] Visit: 05 (COS FUV HD131488) Visit Requirements: On Hold Comments: Additional Comments: COS FUV Observation of Target HD131488 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD131488 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 15 S (15 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD131488 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 15 S (15 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD131488 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 425 S G FP-POS=ALL, BUFFER-TIME=3225 see below (1593 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD131488 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD131488 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 1 399.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 8] Visit: 08 (STIS FUV HD110058) Visit Requirements: On Hold Comments: Additional Comments: STIS FUV Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 STIS/CCD ACQ F28X50OII MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S (1 S) K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 BUFFER-TIME=898 1 1795 S -MAMA G (1795 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD110058 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 BUFFER-TIME=1477 1 2953 S -MAMA G (2953 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD110058 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 BUFFER-TIME=1477 1 2953 S -MAMA G (2953 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD110058 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD110058 3 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 none none none none 1 N/A -MAMA G HD110058 4 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 none none none none 2 N/A -MAMA G HD110058 5 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 none none none none 3 N/A -MAMA G 15916( 3) - 03-Oct-2019 19:21:09 - [ 9] Visit: 09 (STIS FUV+NUV/1763+2463+2912 HD131488) Visit Requirements: On Hold Comments: Additional Comments: STIS FUV and NUV/1763+2463+2912 Observation of Target HD131488 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD131488 STIS/CCD ACQ F28X50OII MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD131488 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S (1 S) K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD131488 STIS/NUV TIME-TA 0.2X0.09 E230H 1763 BUFFER-TIME=278 1 1768 S -MAMA G (1768 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD131488 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 BUFFER-TIME=1453 1 2906 S -MAMA G (2906 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD131488 STIS/NUV TIME-TA 0.2X0.09 E230H 2463 BUFFER-TIME=155 1 1203 S -MAMA G (1203 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD131488 STIS/NUV TIME-TA 0.2X0.09 E230H 2912 BUFFER-TIME=181 1 1226 S -MAMA G (1226 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD131488 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD131488 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD131488 3 STIS/NUV TIME-TA 0.2X0.09 E230H 1763 none none none none 1 N/A -MAMA G HD131488 4 STIS/FUV TIME-TA 0.2X0.09 E140H 1562 none none none none 2 N/A -MAMA G HD131488 5 STIS/NUV TIME-TA 0.2X0.09 E230H 2463 none none none none 3 N/A -MAMA G HD131488 6 STIS/NUV TIME-TA 0.2X0.09 E230H 2912 none none none none 3 N/A -MAMA G 15916( 3) - 03-Oct-2019 19:21:09 - [ 10] Visit: 10 (STIS NUV/1763+2463+2912 HD110058) Visit Requirements: On Hold Comments: Additional Comments: STIS NUV/1763+2463+2912 Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 STIS/CCD ACQ F28X50OII MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S (1 S) K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 STIS/NUV TIME-TA 0.2X0.09 E230H 1763 BUFFER-TIME=312 1 1815 S -MAMA G (1815 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HD110058 STIS/NUV TIME-TA 0.2X0.09 E230H 2463 BUFFER-TIME=178 1 1226 S -MAMA G (1226 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 HD110058 STIS/NUV TIME-TA 0.2X0.09 E230H 2912 BUFFER-TIME=186 1 1250 S -MAMA G (1250 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD110058 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD110058 3 STIS/NUV TIME-TA 0.2X0.09 E230H 1763 none none none none 1 N/A -MAMA G HD110058 4 STIS/NUV TIME-TA 0.2X0.09 E230H 2463 none none none none 2 N/A -MAMA G HD110058 5 STIS/NUV TIME-TA 0.2X0.09 E230H 2912 none none none none 2 N/A -MAMA G 15916( 3) - 03-Oct-2019 19:21:09 - [ 11] Visit: 11 (STIS NUV/1763 HD110058) Visit Requirements: AFTER 10 BY 3 D TO 14 D On Hold Comments: Additional Comments: STIS NUV/1763 Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 STIS/CCD ACQ F28X50OII MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S (1 S) K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 STIS/NUV TIME-TA 0.2X0.09 E230H 1763 BUFFER-TIME=312 1 1815 S -MAMA G (1815 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD110058 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD110058 3 STIS/NUV TIME-TA 0.2X0.09 E230H 1763 none none none none 1 N/A -MAMA G 15916( 3) - 03-Oct-2019 19:21:09 - [ 12] Visit: 19 (COS FUV HD110058) Visit Requirements: AFTER 01 BY 3 D TO 14 D On Hold Comments: Additional Comments: COS FUV Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 30 S (30 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 30 S (30 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 1600 S G FP-POS=ALL, BUFFER-TIME=12184 see below (7588 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD110058 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 1865.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 2 2919.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 3 1402.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 3 1402.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 13] Visit: 20 (COS FUV HD110058) Visit Requirements: AFTER 19 BY 3 D TO 14 D On Hold Comments: Additional Comments: COS FUV Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 30 S (30 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 30 S (30 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 1600 S G FP-POS=ALL, BUFFER-TIME=12184 see below (7588 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD110058 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 1865.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 2 2919.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 3 1402.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 3 1402.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 14] Visit: 21 (COS FUV HD110058) Visit Requirements: AFTER 20 BY 3 D TO 14 D On Hold Comments: Additional Comments: COS FUV Observation of Target HD110058 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 30 S (30 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD110058 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 30 S (30 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD110058 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 1600 S G FP-POS=ALL, BUFFER-TIME=12184 see below (7588 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD110058 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD110058 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 1865.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 2 2919.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 3 1402.0 S G HD110058 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 3 1402.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 15] Visit: 22 (COS FUV HD131488) Visit Requirements: AFTER 05 BY 3 D TO 14 D On Hold Comments: Additional Comments: COS FUV Observation of Target HD131488 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD131488 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 15 S (15 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD131488 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 15 S (15 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD131488 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 425 S G FP-POS=ALL, BUFFER-TIME=3225 see below (1593 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD131488 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD131488 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 1 399.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 16] Visit: 23 (COS FUV HD131488) Visit Requirements: AFTER 22 BY 3 D TO 14 D On Hold Comments: Additional Comments: COS FUV Observation of Target HD131488 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD131488 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A 1 15 S (15 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD131488 COS/FUV ACQ/PEA PSA G130M 1327 SEGMENT=A, STEP-SIZE=0.9, 1 15 S (15 KD NUM-POS=5, CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD131488 COS/FUV TIME-TA PSA G130M 1222 SEGMENT=BOTH, FLASH=YES, 1 425 S G FP-POS=ALL, BUFFER-TIME=3225 see below (1593 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD131488 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD HD131488 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 1 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 2 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 3 1 398.0 S G HD131488 3 COS/FUV TIME-TA PSA G130M 1222 none none none 4 1 399.0 S G 15916( 3) - 03-Oct-2019 19:21:09 - [ 17] Summary Form for Proposal 15916 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.2X0.05ND, 0.2X0.09, F28X50OII, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, STIS/CCD, STIS/FUV-MAMA, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ, ACQ/PEAK, ACQ/PEAKD, ACQ/PEAKXD, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=12184, BUFFER-TIME=1453, BUFFER-TIME=1477, BUFFER-TIME=155, BUFFER-TIME=178, BUFFER-TIME=181, BUFFER-TIME=186, BUFFER-TIME=278, BUFFER-TIME=312, BUFFER-TIME=3225, BUFFER-TIME=898, CENTER=FLUX-WT-FLR, FLASH=YES, FP-POS=ALL, NUM-POS=5, SEGMENT=A, SEGMENT=BOTH, STEP-SIZE=0.9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 3 D TO 14 D, AFTER 05 BY 3 D TO 14 D, AFTER 10 BY 3 D TO 14 D, AFTER 19 BY 3 D TO 14 D, AFTER 20 BY 3 D TO 14 D, AFTER 22 BY 3 D TO 14 D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E140H, E230H, G130M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD110058, HD131488 ------------------------------------------------------------------------------------------------------------------------------------