17709( 3) - 18-Mar-2025 17:18:02 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17709 Version: 3 Check-in Time: 18-Mar-2025 17:18:02 STScI Edit Number: 0 Title Measuring Lyman-alpha Propagation in Planet-Forming Circumstellar Disks ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Nicole Arulanantham Schmidt Sciences Y CoI: Dr. Gregory J. Herczeg Peking University N CoI: Dr. Seok-Jun Chang Max Planck Institute for Astrophysics N CoI: Dr. Max Gronke Max Planck Institute for Astrophysics N CoI: Dr. Edwin Anthony Bergin University of Michigan N CoI: Dr. Jenny Calahan Smithsonian Institution Astrophysical N Observatory ------------------------------------------------------------------------------------ Abstract Lyman-alpha emission makes up ~88% of the total FUV flux irradiating the circumstellar gas disks surrounding young stellar objects (YSOs). Radio and infrared observations along with advanced physical-chemical models indicate that the FUV radiation fields play a critical role in regulating the abundances and spatial distributions of water and organic molecules in disk regions where planet formation is ongoing. We propose to use the G140M mode on STIS to spectrally image resonantly scattered Lyman-alpha in a sample of six systems. The spatial coverage provided by this novel dataset, combined with 3-D radiative transfer models, will allow us to: 1) Measure the radial propagation of Lyman-alpha photons through the disks and winds; 2) Isolate the contribution of scattered flux from the disks alone, to measure the total radiation available to catalyze photochemistry; and 3) Constrain the spatial extents and opening angles of stellar and/or disk winds, which contribute the largest component of scattered flux. This technique has so far only been applied to TW Hya, a face-on disk with three prominent gaps in its dust continuum emission. The targets in our sample span disk inclinations from 20-88 degrees and have dust gaps, spiral arms, and dust clumps and traps, allowing us to further explore the propagation of Lyman-alpha photons in asymmetric and dust-free disk environments. These results will provide new UV information that is required to analyze increasingly deep, spatially resolved data from ALMA and ongoing observations of warm molecular gas with JWST. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will use the 0.2''x52'' slit on STIS to construct line images of Lyman-alpha emission from a sample of six YSOs with circumstellar disks: HD 169142, HD 135344B, AB Aur, HD 163296, T Cha, and 2MASS J04202144+2813491. We will use the G140M grating centered at 1222 Angstroms to yield R ~ 10, 000 spectra from 1194-1249 Angstroms for all six of our targets. For the four disks with archival long-slit G140M spectra, the observations should be acquired at seven steps (+/-0.6'' in 0.2'' intervals) across each disk, allowing us to trace the propagation of scattered photons through the disk and constrain the vertical 17709( 3) - 18-Mar-2025 17:18:02 - [ 2] extent of the dense wind. For the remaining two disks, which are more inclined, the central position should be omitted due to the high extinction along the line-of-sight through the disk midplane. Each target will be acquired with the F28x50OII filter at 5005 Angstroms, and an acquisition peak-up will be performed with the 0.05''x52'' slit to ensure that the system is properly centered. Our science goals require S/N ~ 5 in the Lyman-alpha line wings observed off source, following PSF subtraction based on the N V and Si III emission lines. ------------------------------------------------------------------------------------ 17709( 3) - 18-Mar-2025 17:18:02 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-169142 STAR, HERBIG AE/BE, RA=18H24M29.7800S, J2000 V = 8.16 PROTOPLANETARY DISK DEC=-29D46'49.33" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -1.7935276913614347E-4 -0.037878999955864856 0.0087053 ------------------------------------------------------------------------------------------------------------------------------------ 2 CPD-36-6759 STAR, HERBIG AE/BE, RA=15H15M48.4460S, J2000 V = 8.708 PROTOPLANETARY DISK DEC=-37D09'16.02" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0016068382464733413 -0.023267999904419412 0.0074074 ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-AUR STAR, HERBIG AE/BE, RA=04H55M45.8459S, J2000 V = 7.05 PROTOPLANETARY DISK DEC=+30D33'4.29" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 3.110477636593412E-4 -0.024027000063142623 0.0064127 ------------------------------------------------------------------------------------------------------------------------------------ 17709( 3) - 18-Mar-2025 17:18:02 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 4 HD-163296 STAR, HERBIG AE/BE, RA=17H56M21.2882S, J2000 V = 6.85 PROTOPLANETARY DISK DEC=-21D57'21.87" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -5.452822345222826E-4 -0.03945799990106025 0.0099043 ------------------------------------------------------------------------------------------------------------------------------------ 5 V-T-CHA STAR, PROTOPLANETARY RA=11H57M13.5245S, J2000 V = 11.86 DISK, T TAURI STAR DEC=-79D21'31.53" Reference Frame: ICRS Comments: This object was generated by the target selector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.015013634123660845 -0.008654999942336872 0.0097356 ------------------------------------------------------------------------------------------------------------------------------------ 6 2MASS-J04202 STAR, PROTOPLANETARY RA=04H20M21.4428S, J2000 V = 18.5 144+2813491 DISK, T TAURI STAR DEC=+28D13'49.17" Reference Frame: ICRS 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) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 17709( 3) - 18-Mar-2025 17:18:02 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose DITHER Number_Of_Points 7 Point_Spacing 0.2 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: For the four disks that will have an on-source spectrum in addition to +/-0.2" positions (HD 169142, HD 135344B, AB Aur, HD 163296) ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose DITHER Number_Of_Points 5 Point_Spacing 0.2 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: For T Cha, which will not have an on-source spectrum ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 5 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 1.2 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: For T Cha, to get the outermost positions at +/-0.6" ------------------------------------------------------------------------------------------------------------------------------------ 17709( 3) - 18-Mar-2025 17:18:02 - [ 6] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose DITHER Number_Of_Points 5 Point_Spacing 0.4 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: For Tau 042021, which will not have an on-source spectrum ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 4 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 2.4 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: For Tau 042021, to get the final positions at +/-1.2" ------------------------------------------------------------------------------------------------------------------------------------ 17709( 3) - 18-Mar-2025 17:18:02 - [ 7] Visit: 01 (HD 169142) Visit Requirements: On Hold Comments: Additional Comments: HD 169142 visit. Acquisition followed by peak-up followed by series of seven offset science exposures from -0.6" to 0.6" in 0.2" increments. 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 HD-169142 STIS/CCD ACQ F28X50OII MIRROR 1 5.0 S (5 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-169142 STIS/FUV ACCUM 52X0.2 G140M 1222 1 1519 S PATTERN 1 2 -MAMA see below (9012 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-169142 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 2047.0 S -MAMA HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 1519.0 S -MAMA HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 2 816.0 S -MAMA HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 3 1519.0 S -MAMA HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 3 796.0 S -MAMA HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 6 none none none 4 1519.0 S -MAMA HD-169142 2 STIS/FUV ACCUM 52X0.2 G140M 1222 7 none none none 4 796.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 8] Visit: 02 (HD 135344B) Visit Requirements: 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 CPD-36-6759 STIS/CCD ACQ F28X50OII MIRROR 1 5.0 S (5 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CPD-36-6759 STIS/FUV ACCUM 52X0.2 G140M 1222 1 1224 S PATTERN 1 2 -MAMA see below (6525 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 | ------------------------------------------------------------------------------------------------------------------------------------ CPD-36-6759 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 1222.0 S -MAMA CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 1 709.0 S -MAMA CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 2 1222.0 S -MAMA CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 2 1100.0 S -MAMA CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 3 1222.0 S -MAMA CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 6 none none none 3 525.0 S -MAMA CPD-36-6759 2 STIS/FUV ACCUM 52X0.2 G140M 1222 7 none none none 3 525.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 9] Visit: 03 (AB Aur) Visit Requirements: 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 V-AB-AUR STIS/CCD ACQ F28X50OII MIRROR 1 2.0 S (2 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-AUR STIS/FUV ACCUM 52X0.2 G140M 1222 1 1181 S PATTERN 1 2 -MAMA see below (6522 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-AUR 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 1181 S -MAMA V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 1 757.0 S -MAMA V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 2 1181.0 S -MAMA V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 2 1136.0 S -MAMA V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 3 1181.0 S -MAMA V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 6 none none none 3 543.0 S -MAMA V-AB-AUR 2 STIS/FUV ACCUM 52X0.2 G140M 1222 7 none none none 3 543.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 10] Visit: 04 (HD 163296) Visit Requirements: 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 HD-163296 STIS/CCD ACQ F28X50OII MIRROR 1 2.0 S (2 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-163296 STIS/FUV ACCUM 52X0.2 G140M 1222 1 1626 S PATTERN 1 2 -MAMA (9152 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-163296 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 N/A -MAMA HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 1 306.0 S -MAMA HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 2 N/A -MAMA HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 2 685.0 S -MAMA HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 3 N/A -MAMA HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 6 none none none 3 685.0 S -MAMA HD-163296 2 STIS/FUV ACCUM 52X0.2 G140M 1222 7 none none none 4 2598.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 11] Visit: 05 (T Cha) Visit Requirements: 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 V-T-CHA STIS/CCD ACQ F28X50OII MIRROR 1 10.0 S (10 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-T-CHA STIS/FUV ACCUM 52X0.2 G140M 1222 1 4077 S PATTERN 2 2 -MAMA see below (13385 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-T-CHA 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 2233.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 2788.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 3 2788.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 4 2788.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 5 2788.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 12] Visit: 08 (Tau 042021) Visit Requirements: 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 2MASS-J0420 STIS/CCD ACQ F28X50LP MIRROR 1 23 S (23 2144+281349 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J0420 STIS/FUV ACCUM 52X0.2 G140M 1222 1 4077 S PATTERN 3 2 2144+281349 -MAMA see below 1 (12403 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 | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J04202144+281 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3491 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 1995 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 2602.0 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 3 2602.0 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 4 2602.0 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 5 2602.0 S 3491 -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 13] Visit: 09 (T Cha) Visit Requirements: 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 V-T-CHA STIS/CCD ACQ F28X50OII MIRROR 1 10.0 S (10 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-T-CHA STIS/FUV ACCUM 52X0.2 G140M 1222 1 4077 S PATTERN 2 2 -MAMA see below (13385 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-T-CHA 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 2233.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 2788.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 3 2788.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 4 2788.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 5 2788.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 14] Visit: 10 (Tau 042021) Visit Requirements: 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 2MASS-J0420 STIS/CCD ACQ F28X50LP MIRROR 1 23 S (23 2144+281349 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J0420 STIS/FUV ACCUM 52X0.2 G140M 1222 1 4077 S PATTERN 3 2 2144+281349 -MAMA see below 1 (12403 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 | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J04202144+281 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3491 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 1995 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 2602.0 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 3 none none none 3 2602.0 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 4 none none none 4 2602.0 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 5 none none none 5 2602.0 S 3491 -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 15] Visit: 11 (T Cha) Visit Requirements: 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 V-T-CHA STIS/CCD ACQ F28X50OII MIRROR 1 10.0 S (10 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-T-CHA STIS/FUV ACCUM 52X0.2 G140M 1222 1 4077 S PATTERN 5 2 -MAMA see below (5021 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-T-CHA 1 STIS/CCD ACQ F28X50OI MIRROR none none none none 1 N/A I V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 2233.0 S -MAMA V-T-CHA 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 2788.0 S -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 16] Visit: 12 (Tau 042021) Visit Requirements: 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 2MASS-J0420 STIS/CCD ACQ F28X50LP MIRROR 1 23 S (23 2144+281349 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 2MASS-J0420 STIS/FUV ACCUM 52X0.2 G140M 1222 1 4077 S PATTERN 4 2 2144+281349 -MAMA see below 1 (4594 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 | ------------------------------------------------------------------------------------------------------------------------------------ 2MASS-J04202144+281 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3491 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 1 none none none 1 1995 S 3491 -MAMA 2MASS-J04202144+281 2 STIS/FUV ACCUM 52X0.2 G140M 1222 2 none none none 2 2599.0 S 3491 -MAMA 17709( 3) - 18-Mar-2025 17:18:02 - [ 17] Summary Form for Proposal 17709 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.2, F28X50LP, F28X50OII ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 2, PATTERN 2 2, PATTERN 3 2, PATTERN 4 2, PATTERN 5 2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names 2MASS-J04202144+2813491, CPD-36-6759, HD-163296, HD-169142, V-AB-AUR, V-T-CHA ------------------------------------------------------------------------------------------------------------------------------------