15846( 14) - 29-Jan-2021 19:25:53 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15846 Version: 14 Check-in Time: 29-Jan-2021 19:25:53 STScI Edit Number: 12 Title He II Emission from Wolf-Rayet Stars: a New Dust Attenuation Measure in Star-forming Galaxies ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Claus Leitherer Space Telescope Science Institute Y CoI: Dr. Andreas L Faisst California Institute of Technology N CoI: Dr. Janice Lee California Institute of Technology N ------------------------------------------------------------------------------------ Abstract We developed and calibrated a novel technique to measure dust attenuation in star-forming galaxies. The technique utilizes the strong stellar-wind emission lines in Wolf-Rayet stars, which are routinely observed in galaxy spectra locally and up to redshift 3. The He II 1640 and 4686 features are recombination lines whose intrinsic ratio is almost exclusively determined by atomic physics. Therefore it can serve as a stellar dust probe in the same way as the nebular hydrogen-line ratio can be used to measure the reddening of the gas phase. The new technique allows us to study stellar and nebular attenuation in galaxies separately and to test its effects at different stellar age and mass regimes, independently of assumptions on the stellar initial mass function. In this proposal we request co-spatial optical STIS spectroscopy of eight star-forming galaxies with existing archival ultraviolet spectra but lacking co-spatial optical data through matching apertures.The need for high spatial resolution and matching apertures precludes the use of ground-based data. We will use the line ratios of the broad (non-nebular) Wolf-Rayet lines at 1640 and 4686 A to determine the dust attenuation of the most massive stars and compare it to the reddening of the less massive stars, as indicated by the ultraviolet continuum slope, as well as to the gas reddening. This allows us to disentangle the effects of stellar mass, age, and stellar versus nebular reddening in star-forming galaxies. ------------------------------------------------------------------------------------ Observations Description ------------------------ The eight targeted galaxies have been successfully observed before as part of programs 7513 and 9036 using STIS with the G140L and G230L gratings and the 52x0.2 and 52x0.5 apertures. Therefore the coordinates and acquisition parameters are well known, and the requested observations in G430M and G430L are risk-free. As has been done in both previous programs, we will use an imaging acquisition with the optical long-pass filter. No peak-up will be performed. Typical exposure times are between 20 and 60 s. In Table 1, column 5 we list one archival UV dataset for each galaxy. In all cases, there are additional G140L and (in six cases) G230L spectra. The available UV spectra permit a safe estimate of the expected fluxes around 4686. The derived values are in column 6 of Table 1. We will collect spectra with the G430M (4706) and G430L (4300) gratings. While the broad W-R 4686 line itself will be easily detected with G430L, we expect some contribution by 15846( 14) - 29-Jan-2021 19:25:53 - [ 2] nebular lines of [Fe III] 4658, [Ar IV] 4711 and [Ar IV] 4740 (Schaerer et al. 1999). This is not an issue at the wavelength of the UV 1640 line, where there are no such lines, but requires more care in the case of the optical 4686 line. These effects can be mitigated by the higher resolution of the G430M grating. Column 8 of Table 1 gives the required exposure times in order to reach S/N = 20 with the G430M grating. This S/N is based on our prior extensive experience with HST spectra of star-forming galaxies. We will also take short G430L spectra to measure the continuum in combination with the UV spectra. The G430L spectra will also be used to determine the nebular reddening from Ha and Hb. The exposure times for G430L are negligible (300 s or less). All spectra will be cr-split for cosmic-ray removal. The total overhead consists of the guide-star acquisition (6 min), target acquisition (7 min), instrument set-up (5 min), and guide-star re-acquisition (4 min), plus a few minutes for data managements. The estimated orbit duration for the eight galaxies is about 54 min. Therefore we can fit the observations for the two gratings into one or two orbits per galaxy. ------------------------------------------------------------------------------------ 15846( 14) - 29-Jan-2021 19:25:53 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HE-2-10 GALAXY, STAR FORMING RA=08H36M15.1300S +/- 0.02S, J2000 V = 11.1 F(4700) = 1e-15 REGION DEC=-26D24'33.70" +/- 0.3" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-3049 GALAXY, STAR FORMING RA=09H54M49.4000S +/- 0.1S, J2000 V = 12.5 F(4700) = 4e-15 REGION DEC=+09D16'15.90" +/- 1.0" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-3125 GALAXY, STAR FORMING RA=10H06M33.2900S +/- 0.02S, J2000 V = 13.0 F(4700) = 6e-16 REGION DEC=-29D56'6.80" +/- 0.3" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 4 MRK-33 GALAXY, STAR FORMING RA=10H32M31.8800S +/- 0.02S, J2000 V = 13.1 F(4700) = 8e-16 REGION DEC=+54D24'2.20" +/- 0.3" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-4214 GALAXY, STAR FORMING RA=12H15M39.4500S +/- 0.02S, J2000 V = 10.2 F(4700) = 1e-15 REGION DEC=+36D19'34.80" +/- 0.3" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-4670 GALAXY, STAR FORMING RA=12H45M17.4400S +/- 0.02S, J2000 V = 12.2 F(4700) = 9e-16 REGION DEC=+27D07'31.80" +/- 0.3" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 7 TOL-89 GALAXY, STAR FORMING RA=14H01M19.9200S +/- 0.1S, J2000 V = 12.0 F(4700) = 2e-15 REGION DEC=-33D04'10.70" +/- 1.0" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 15846( 14) - 29-Jan-2021 19:25:53 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 8 TOL-1924-416 GALAXY, STAR FORMING RA=19H27M58.3100S +/- 0.02S, J2000 V = 13.2 F(4700) = 8e-16 REGION DEC=-41D34'29.80" +/- 0.3" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 15846( 14) - 29-Jan-2021 19:25:53 - [ 5] Visit: 01 (He-2-10) Visit Requirements: ORIENT 129.5D TO 130.5 D; ORIENT 309.5D TO 310.5 D On Hold Comments: Additional Comments: 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 HE-2-10 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 30 S (30 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HE-2-10 STIS/CCD ACCUM 52X0.2 G430L 4300 CR-SPLIT=3 1 350 S (350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HE-2-10 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=NO 1 1515 S (1515 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HE-2-10 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=2 1 2680 S (2680 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 | ------------------------------------------------------------------------------------------------------------------------------------ HE-2-10 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A HE-2-10 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 1 1 N/A HE-2-10 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 2 1 N/A HE-2-10 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 3 1 N/A HE-2-10 3 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none none 1 N/A HE-2-10 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 1 2 N/A HE-2-10 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 2 2 N/A 15846( 14) - 29-Jan-2021 19:25:53 - [ 6] Visit: 02 (NGC-3049) Visit Requirements: ORIENT 266.5D TO 267.5 D; ORIENT 86.5D TO 87.5 D On Hold Comments: Additional Comments: 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 NGC-3049 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 8 S (8 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-3049 STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 150 S (150 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-3049 STIS/CCD ACCUM 52X0.5 G430M 4706 CR-SPLIT=2 1 1650 S (1650 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3049 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC-3049 2 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none 1 1 N/A NGC-3049 2 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none 2 1 N/A NGC-3049 3 STIS/CCD ACCUM 52X0.5 G430M 4706 none none none 1 1 N/A NGC-3049 3 STIS/CCD ACCUM 52X0.5 G430M 4706 none none none 2 1 N/A 15846( 14) - 29-Jan-2021 19:25:53 - [ 7] Visit: 03 (NGC-3125) Visit Requirements: SCHED 60%; ORIENT 166.8D TO 167.8 D; ORIENT 346.8D TO 347.8 D On Hold Comments: Additional Comments: 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 NGC-3125 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 30 S (30 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-3125 STIS/CCD ACCUM 52X0.2 G430L 4300 CR-SPLIT=3 1 350 S see below (316.8 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-3125 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=NO 1 1515 S see below (1504 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-3125 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=2 1 2680 S see below (2580 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3125 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC-3125 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 1 1 105.6 S NGC-3125 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 2 1 105.6 S NGC-3125 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 3 1 105.6 S NGC-3125 3 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none none 1 1504.0 S NGC-3125 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 1 2 1290.0 S NGC-3125 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 2 2 1290.0 S 15846( 14) - 29-Jan-2021 19:25:53 - [ 8] Visit: 04 (Mrk-33) Visit Requirements: SCHED 50%; ORIENT 12.2D TO 13.2 D; ORIENT 192.2D TO 193.2 D On Hold Comments: Additional Comments: 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 MRK-33 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 30 S (30 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 MRK-33 STIS/CCD ACCUM 52X0.2 G430L 4300 CR-SPLIT=3 1 500 S see below (412.8 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MRK-33 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=NO 1 1515 S see below (1486 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MRK-33 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=2 1 2850 S see below (2598 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 | ------------------------------------------------------------------------------------------------------------------------------------ MRK-33 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A MRK-33 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 1 1 137.6 S MRK-33 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 2 1 137.6 S MRK-33 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 3 1 137.6 S MRK-33 3 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none none 1 1486.0 S MRK-33 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 1 2 1299.0 S MRK-33 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 2 2 1299.0 S 15846( 14) - 29-Jan-2021 19:25:53 - [ 9] Visit: 05 (NGC-4214) Visit Requirements: ORIENT 220.5D TO 221.5 D; ORIENT 40.5D TO 41.5 D On Hold Comments: Additional Comments: 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 NGC-4214 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 30 S (30 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-4214 STIS/CCD ACCUM 52X0.2 G430L 4300 CR-SPLIT=3 1 380 S (380 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-4214 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=NO 1 1515 S (1515 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-4214 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=2 1 2720 S (2720 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-4214 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC-4214 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 1 1 N/A NGC-4214 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 2 1 N/A NGC-4214 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 3 1 N/A NGC-4214 3 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none none 1 N/A NGC-4214 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 1 2 N/A NGC-4214 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 2 2 N/A 15846( 14) - 29-Jan-2021 19:25:53 - [ 10] Visit: 06 (NGC-4670) Visit Requirements: SCHED 50%; ORIENT 89.5D TO 90.5 D; ORIENT 268.5D TO 270.5 D On Hold Comments: Additional Comments: 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 NGC-4670 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 30 S (30 GS ACQ SCENARIO BASE1BE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-4670 STIS/CCD ACCUM 52X0.2 G430L 4300 CR-SPLIT=3 1 380 S see below (337.8 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-4670 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=NO 1 1480 S see below (1466 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-4670 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=2 1 2680 S see below (2624 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-4670 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC-4670 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 1 1 112.6 S NGC-4670 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 2 1 112.6 S NGC-4670 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 3 1 112.6 S NGC-4670 3 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none none 1 1466.0 S NGC-4670 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 1 2 1312.0 S NGC-4670 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 2 2 1312.0 S 15846( 14) - 29-Jan-2021 19:25:53 - [ 11] Visit: 07 (Tol-89) Visit Requirements: ORIENT 314D TO 316 D; ORIENT 134D TO 136 D On Hold Comments: Additional Comments: 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 TOL-89 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 15 S (15 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TOL-89 STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=2 1 150 S (150 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOL-89 STIS/CCD ACCUM 52X0.5 G430M 4706 CR-SPLIT=2 1 1650 S (1650 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOL-89 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TOL-89 2 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none 1 1 N/A TOL-89 2 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none 2 1 N/A TOL-89 3 STIS/CCD ACCUM 52X0.5 G430M 4706 none none none 1 1 N/A TOL-89 3 STIS/CCD ACCUM 52X0.5 G430M 4706 none none none 2 1 N/A 15846( 14) - 29-Jan-2021 19:25:53 - [ 12] Visit: 08 (Tol-1924-416) Visit Requirements: SCHED 70%; ORIENT 130.5D TO 131.5 D; ORIENT 310.5D TO 311.5 D On Hold Comments: Additional Comments: 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 TOL-1924-41 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 30 S (30 GS ACQ SCENARIO BASE1BE 6 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TOL-1924-41 STIS/CCD ACCUM 52X0.2 G430L 4300 CR-SPLIT=3 1 380 S 6 see below (253.8 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOL-1924-41 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=NO 1 1560 S 6 see below (1518 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 TOL-1924-41 STIS/CCD ACCUM 52X0.2 G430M 4706 CR-SPLIT=2 1 2760 S 6 see below (2590 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOL-1924-416 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TOL-1924-416 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 1 1 84.6 S TOL-1924-416 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 2 1 84.6 S TOL-1924-416 2 STIS/CCD ACCUM 52X0.2 G430L 4300 none none none 3 1 84.6 S TOL-1924-416 3 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none none 1 1518.0 S TOL-1924-416 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 1 2 1295.0 S TOL-1924-416 4 STIS/CCD ACCUM 52X0.2 G430M 4706 none none none 2 2 1295.0 S 15846( 14) - 29-Jan-2021 19:25:53 - [ 13] Summary Form for Proposal 15846 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.2, 52X0.5, F28X50LP ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=POINT, CR-SPLIT=2, CR-SPLIT=3, CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1BE, ORIENT 12.2D TO 13.2 D, ORIENT 129.5D TO 130.5 D, ORIENT 130.5D TO 131.5 D, ORIENT 134D TO 136 D, ORIENT 166.8D TO 167.8 D, ORIENT 192.2D TO 193.2 D, ORIENT 220.5D TO 221.5 D, ORIENT 266.5D TO 267.5 D, ORIENT 268.5D TO 270.5 D, ORIENT 309.5D TO 310.5 D, ORIENT 310.5D TO 311.5 D, ORIENT 314D TO 316 D, ORIENT 346.8D TO 347.8 D, ORIENT 40.5D TO 41.5 D, ORIENT 86.5D TO 87.5 D, ORIENT 89.5D TO 90.5 D, SCHED 50%, SCHED 60%, SCHED 70% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G430L, G430M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names HE-2-10, MRK-33, NGC-3049, NGC-3125, NGC-4214, NGC-4670, TOL-1924-416, TOL-89 ------------------------------------------------------------------------------------------------------------------------------------