18076( 4) - 31-Oct-2025 18:56:59 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18076 Version: 4 Check-in Time: 31-Oct-2025 18:56:59 STScI Edit Number: 0 Title Unveiling the Circumgalactic Medium of M33: A Study of Satellite-Host Interactions in the Local Group ------------------------------------------------------------------------------------ Type Cycle GO 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Sapna Mishra Space Telescope Science Institute Y CoI: Dr. Andrew J. Fox Space Telescope Science Institute - ESA N CoI: Dr. Elena D'Onghia University of Wisconsin - Madison N CoI: Dr. Frances H. Cashman Presbyterian College N CoI: Dr. Nicolas Lehner University of Notre Dame N CoI: Dr. Scott Lucchini Center for Astrophysics | Harvard & N Smithsonian CoI: Dr. Adam Smercina Space Telescope Science Institute N CoI: Cameron Trapp University of California - San Diego N CoI: Dr. Jason Tumlinson Space Telescope Science Institute N CoI: Dr. Anna Wright The Johns Hopkins University N ------------------------------------------------------------------------------------ Abstract Satellite galaxies are cosmic storytellers, revealing how galaxies collide, evolve, and grow. Interactions with their hosts through ram-pressure and tidal stripping--can rapidly quench star formation. However, the circumgalactic medium (CGM), which serves as a protective outer envelope, remains largely unexplored for satellite galaxies, with the Large Magellanic Cloud (LMC) being the only well-studied case. We propose to study the CGM of the Triangulum Galaxy (M33), the most massive satellite of Andromeda (M31) and an analog to the LMC. We request 30 orbits of HST/COS G130M spectroscopy to observe four new quasars. Combining with two archival sightlines, we will map M33's inner CGM (within 0.5 Rvir). Our goals are to: (1) determine if M33 hosts its own CGM or it has merged into M31's CGM, (2) compare it with the LMC to assess how environment and infall history shape CGM evolution, and (3) test predictions from simulations of satellite CGM evolution. This research offers a unique opportunity to advance our understanding of how feedback, host mass, and orbit influence satellite CGMs through direct observational constraints beyond the Milky Way. ------------------------------------------------------------------------------------ Observations Description ------------------------ This is a COS FUV program to observe four QSO targets probing the halo of the M33 galaxy. The science goal is find out if M33 has its own CGM or it is merged with that of M31. I will use UV metal absoption lines in the spectra of G130M spectra of these quasars. The targets will be acquired with a NUV ACQ/IMAGE with the PSA and MIRRORA (object 1, 2, 4) MIRRORB (object 4), followed by science observations with the G130M/1291 setting. We used two FP-POS 3 and 4 in each visit. These four objects are spread across 11 visits. All visits are up to 3 orbits in length, following the guidance from the PC. ------------------------------------------------------------------------------------ 18076( 4) - 31-Oct-2025 18:56:59 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ013803. ISM, ABSORPTION LINE RA=01H38M3.5794S +/- 0.1", J2000 Z = V = 18.132710 19.09 (FUV) 57+304026.1 SYSTEM, ABSORPTION LINE DEC=+30D40'26.21" +/- 0.1" 0.335 SYSTEM - EXTRAGALACTIC, ABSORPTION LINE SYSTEM - GALACTIC, HALO Reference Frame: ICRS Extended: NO Comments: magnitude is in G-band 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 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012657. ISM, ABSORPTION LINE RA=01H26M57.0250S +/- 0.1", J2000 Z = V = 18.550688 19.02 (FUV) 02+315353.0 SYSTEM, ABSORPTION LINE DEC=+31D53'53.08" +/- 0.1" 0.342 SYSTEM - EXTRAGALACTIC, ABSORPTION LINE SYSTEM - GALACTIC, HALO Reference Frame: ICRS Extended: NO Comments: magnitude is in G band 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 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012007. ISM, ABSORPTION LINE RA=01H20M7.0032S +/- 0.1", J2000 Z = V = 17.849812 18.81 (FUV) 00+285826.6 SYSTEM, ABSORPTION LINE DEC=+28D58'26.63" +/- 0.1" 0.685 SYSTEM - EXTRAGALACTIC, ABSORPTION LINE SYSTEM - GALACTIC, HALO Reference Frame: ICRS Extended: NO Comments: magnitude is in G band 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 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ015356. ISM, ABSORPTION LINE RA=01H53M56.3146S +/- 0.1", J2000 Z = V = 17.03390 18.06 (FUV) 31+305306.4 SYSTEM, ABSORPTION LINE DEC=+30D53'6.49" +/- 0.1" 0.259 SYSTEM - EXTRAGALACTIC, ABSORPTION LINE SYSTEM - GALACTIC, HALO Reference Frame: ICRS Extended: NO Comments: magnitude is in G band 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 ------------------------------------------------------------------------------------------------------------------------------------ 18076( 4) - 31-Oct-2025 18:56:59 - [ 3] Visit: 01 (Object1-Visit1-SDSS J013803) 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 SDSSJ013803 COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) .57+304026. GE 1 Comments: NUV mag = 18.9134 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4307 1 2165 S .57+304026. G (2165 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4307 1 2547 S .57+304026. G (2547 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4307 1 2547 S .57+304026. G (2547 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ013803.57+3040 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 26.1 GE SDSSJ013803.57+3040 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 26.1 G SDSSJ013803.57+3040 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.1 G SDSSJ013803.57+3040 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 26.1 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 4] Visit: 02 (Object1-Visit2-SDSS J013803) 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 SDSSJ013803 COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) .57+304026. GE 1 Comments: NUV mag = 18.9134 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4307 1 2165 S .57+304026. G (2165 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4307 1 2547 S .57+304026. G (2547 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4307 1 2547 S .57+304026. G (2547 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ013803.57+3040 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 26.1 GE SDSSJ013803.57+3040 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 26.1 G SDSSJ013803.57+3040 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.1 G SDSSJ013803.57+3040 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 26.1 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 5] Visit: 03 (Object1-Visit3-SDSS J013803) 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 SDSSJ013803 COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) .57+304026. GE 1 Comments: NUV mag = 18.9134 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4307 1 2165 S .57+304026. G (2165 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4307 1 1092 S .57+304026. G (1092 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4307 1 1092 S .57+304026. G (1092 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ013803 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4307 1 2547 S .57+304026. G (2547 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ013803.57+3040 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 26.1 GE SDSSJ013803.57+3040 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 26.1 G SDSSJ013803.57+3040 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.1 G SDSSJ013803.57+3040 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.1 G SDSSJ013803.57+3040 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 26.1 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 6] Visit: 04 (Object2-Visit1-SDSS J012657) 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 SDSSJ012657 COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) .02+315353. GE 0 Comments: NUV mag = 18.781 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4286 1 2165 S .02+315353. G (2165 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4286 1 1092 S .02+315353. G (1092 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4286 1 1092 S .02+315353. G (1092 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4286 1 2547 S .02+315353. G (2547 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ012657.02+3153 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 53.0 GE SDSSJ012657.02+3153 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 53.0 G SDSSJ012657.02+3153 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 53.0 G SDSSJ012657.02+3153 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 53.0 G SDSSJ012657.02+3153 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 53.0 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 7] Visit: 05 (Object2-Visit2-SDSS J012657) 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 SDSSJ012657 COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) .02+315353. GE 0 Comments: NUV mag = 18.781 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4286 1 2165 S .02+315353. G (2165 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4286 1 2547 S .02+315353. G (2547 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ012657.02+3153 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 53.0 GE SDSSJ012657.02+3153 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 53.0 G SDSSJ012657.02+3153 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 53.0 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 8] Visit: 06 (Object2-Visit3-SDSS J012657) 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 SDSSJ012657 COS/NUV ACQ/IMA PSA MIRRORA 1 6 S (6 S) .02+315353. GE 0 Comments: NUV mag = 18.781 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4286 1 2165 S .02+315353. G (2165 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012657 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4286 1 2547 S .02+315353. G (2547 S) 0 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ012657.02+3153 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 53.0 GE SDSSJ012657.02+3153 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 53.0 G SDSSJ012657.02+3153 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 53.0 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 9] Visit: 07 (Object3-Visit1-SDSS J012007) 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 SDSSJ012007 COS/NUV ACQ/IMA PSA MIRRORB 1 33 S (33 .00+285826. GE S) 6 Comments: NUV mag = 18.0356 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4170 1 2107 S .00+285826. G (2107 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4170 1 2543 S .00+285826. G (2543 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4170 1 2543 S .00+285826. G (2543 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ012007.00+2858 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A 26.6 GE SDSSJ012007.00+2858 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 26.6 G SDSSJ012007.00+2858 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.6 G SDSSJ012007.00+2858 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 26.6 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 10] Visit: 08 (Object3-Visit2-SDSS J012007) 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 SDSSJ012007 COS/NUV ACQ/IMA PSA MIRRORB 1 33 S (33 .00+285826. GE S) 6 Comments: NUV mag = 18.0356 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4170 1 2107 S .00+285826. G (2107 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4170 1 2543 S .00+285826. G (2543 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4170 1 2543 S .00+285826. G (2543 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ012007.00+2858 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A 26.6 GE SDSSJ012007.00+2858 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 26.6 G SDSSJ012007.00+2858 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.6 G SDSSJ012007.00+2858 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 26.6 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 11] Visit: 09 (Object3-Visit3-SDSS J012007) 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 SDSSJ012007 COS/NUV ACQ/IMA PSA MIRRORB 1 33 S (33 .00+285826. GE S) 6 Comments: NUV mag = 18.0356 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4170 1 2107 S .00+285826. G (2107 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=4170 1 1090 S .00+285826. G (1090 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4170 1 1090 S .00+285826. G (1090 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ012007 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=4170 1 2543 S .00+285826. G (2543 S) 6 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ012007.00+2858 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A 26.6 GE SDSSJ012007.00+2858 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 26.6 G SDSSJ012007.00+2858 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.6 G SDSSJ012007.00+2858 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 26.6 G SDSSJ012007.00+2858 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 26.6 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 12] Visit: 10 (Object4-Visit1-SDSS J015356) 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 SDSSJ015356 COS/NUV ACQ/IMA PSA MIRRORA 1 3 S (3 S) .31+305306. GE 4 Comments: NUV mag = 17.7972 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ015356 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=3948 1 2171 S .31+305306. G (2171 S) 4 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ015356 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=3948 1 1092 S .31+305306. G (1092 S) 4 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ015356 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=3948 1 1092 S .31+305306. G (1092 S) 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ015356 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=3948 1 2547 S .31+305306. G (2547 S) 4 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ015356.31+3053 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 06.4 GE SDSSJ015356.31+3053 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 06.4 G SDSSJ015356.31+3053 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 06.4 G SDSSJ015356.31+3053 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 06.4 G SDSSJ015356.31+3053 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A 06.4 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 13] Visit: 11 (Object4-Visit2-SDSS J015356) 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 SDSSJ015356 COS/NUV ACQ/IMA PSA MIRRORA 1 3 S (3 S) .31+305306. GE 4 Comments: NUV mag = 17.7972 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ015356 COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=3948 1 2171 S .31+305306. G (2171 S) 4 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ015356 COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=3948 1 2547 S .31+305306. G (2547 S) 4 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ015356.31+3053 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 06.4 GE SDSSJ015356.31+3053 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A 06.4 G SDSSJ015356.31+3053 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A 06.4 G 18076( 4) - 31-Oct-2025 18:56:59 - [ 14] Summary Form for Proposal 18076 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=3948, BUFFER-TIME=4170, BUFFER-TIME=4286, BUFFER-TIME=4307, FP-POS=3, FP-POS=4 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M, MIRRORA, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names SDSSJ012007.00+285826.6, SDSSJ012657.02+315353.0, SDSSJ013803.57+304026.1, SDSSJ015356.31+305306.4 ------------------------------------------------------------------------------------------------------------------------------------