17534( 14) - 17-Apr-2025 14:40:37 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17534 Version: 14 Check-in Time: 17-Apr-2025 14:40:37 STScI Edit Number: 7 Title A young burping planet: characterizing the variable atmospheric escape of the exciting AU Mic b ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Keighley Elizabeth Rockcliffe University of Maryland, Baltimore County Y CoI: Dr. Elisabeth R. Newton Dartmouth College N CoI: Dr. Allison Youngblood NASA Goddard Space Flight Center N CoI: Dr. Peter Plavchan Missouri State University N CoI: Dr. Andrew Withycombe Mann University of North Carolina at Chapel N Hill CoI: Pa Chia Thao University of North Carolina at Chapel N Hill CoI: Dr. Adina Feinstein Michigan State University N CoI: Dr. Patrick J. Lowrance California Institute of Technology N CoI: Ethan Schreyer University of California - Santa Cruz N CoI: Dr. Hans-Reinhard Mueller Dartmouth College N CoI: Dr. James Edward Owen Imperial College London N ------------------------------------------------------------------------------------ Abstract Atmospheric escape is the prevailing evolutionary theory that explains current exoplanet demographics - pertaining to the most common exoplanet types, short-period sub-Neptunes and super-Earths, in particular. Two planets have been detected around the 23 Myr pre-main sequence M dwarf AU Mic; their known age makes them good probes for early stages of exoplanet evolution. AU Mic b is the 4.2 Earth radius inner planet orbiting with a period of 8 days. The planet's youth, high levels of X-ray and UV radiation, and proximity to its bright host indicate this planet is likely experiencing atmospheric mass loss. Previous STIS UV observations of this planet show a highly variable Lyman-alpha transit, going from no detected planetary outflow to detected. Even more strange, the detection occurs before the white-light transit of the planet, meaning the neutral hydrogen outflow is moving ahead of the planet. This could be explained by 1) variable photoionization of the outflow, or 2) turbulent interactions with the stellar wind environment that cause a "burping" of the outflow. We propose for two additional transits of this planet to test this hypothesis. Observing the extreme behavior of this young planet will provide critical constraints on atmospheric escape models. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will observe 2 AU Mic b transits with STIS FUV-MAMA E140M. Each transit will comprise 2 HST visits of 3 and 5 orbits each (8 orbits per transit). An example transit is shown in Figure 3. Five back-to-back orbits in a single visit can be scheduled to avoid crossings of the South Atlantic Anomaly, and a single visit provides improved stability when compared to re-acquiring the target over multiple visits. The first visit of each transit will comprise 3 orbits 8-12 hours before the white-light mid-transit, capturing the extent of a leading arm 17534( 14) - 17-Apr-2025 14:40:37 - [ 2] of planetary material. The second visit will comprise 5 orbits capturing six hours centered on the white-light mid-transit. We will also observe 2 orbits loosely scheduled over 24 hours before each of the 2 transits. This will provide a baseline observation of the unocculted host star to assess whether there have been long-term changes in the stellar activity. Our entire observing plan consists of 20 orbits. ------------------------------------------------------------------------------------ 17534( 14) - 17-Apr-2025 14:40:37 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 V-AU-MIC STAR, M V-IV, PRE-MAIN RA=20H45M9.5325S +/- 0.0173", J2000 V = 8.627 SEQUENCE STAR DEC=-31D20'27.24" +/- 0.0113" Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.021958633407246034 -0.360148 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 17534( 14) - 17-Apr-2025 14:40:37 - [ 4] Visit: 01 (Pre-transit 1) Visit Requirements: On Hold Comments: Additional Comments: Two exposures 24 hours before transit to observe the unocculted star. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 SEQ 1-3 NON-INT S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2269 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2737 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2269.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2737.0 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 5] Visit: 02 (In-transit 1) Visit Requirements: AFTER 51 BY 12 H TO 36 H; Period 8.4629991 D AND ZERO-PHASE HJD2458330.39051 On Hold Comments: Additional Comments: 5 consecutive exposures that start somewhere between 3 hours before and mid-transit. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 PHASE 0.9852298223687629 S) TO 0; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2207 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 6-7 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 8-9 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 10 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 10-11 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 17534( 14) - 17-Apr-2025 14:40:37 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2207.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2624.0 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA V-AU-MIC 6 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 3 2624.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA V-AU-MIC 8 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 4 2624.0 S -MAMA G WAVE 9 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 4 N/A -MAMA V-AU-MIC 10 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 5 2624.0 S -MAMA G WAVE 11 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 5 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 7] Visit: 03 (Pre-transit 2) Visit Requirements: On Hold Comments: Additional Comments: Two exposures >24 hours before transit to observe the unocculted star. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 SEQ 1-3 NON-INT S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2207 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2207.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2624.0 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 8] Visit: 04 (In-transit 2) Visit Requirements: AFTER 03 BY 12 H TO 36 H; Period 8.4629991 D AND ZERO-PHASE HJD2458330.39051 On Hold Comments: Additional Comments: 5 consecutive exposures that start somewhere between 3 hours before and mid-transit. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 PHASE 0.9852298223687629 S) TO 0; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2207 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 6-7 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 8-9 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 10 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 10-11 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 17534( 14) - 17-Apr-2025 14:40:37 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2207.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2624.0 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA V-AU-MIC 6 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 3 2624.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA V-AU-MIC 8 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 4 2624.0 S -MAMA G WAVE 9 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 4 N/A -MAMA V-AU-MIC 10 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 5 2624.0 S -MAMA G WAVE 11 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 5 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 10] Visit: 05 (Pre-transit 3) Visit Requirements: On Hold Comments: Additional Comments: One exposure 24 hours before transit to observe the unocculted star. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 SEQ 1-3 NON-INT S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2269 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2269.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 11] Visit: 06 (Early transit 1) Visit Requirements: AFTER 05 BY 12 H TO 36 H; Period 8.4629991 D AND ZERO-PHASE HJD2458330.39051 On Hold Comments: Additional Comments: 5 exposures ending at mid-transit to capture potential early transit structure. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 PHASE 0.96553625219378 S) TO 0.9704596447375258; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2269 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2737 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 6-7 NON-INT -MAMA G see below (2737 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 8-9 NON-INT -MAMA G see below (2737 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 10 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 10-11 NON-INT -MAMA G see below (2737 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 17534( 14) - 17-Apr-2025 14:40:37 - [ 12] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2269.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2737.0 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA V-AU-MIC 6 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 3 2737.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA V-AU-MIC 8 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 4 2737.0 S -MAMA G WAVE 9 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 4 N/A -MAMA V-AU-MIC 10 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 5 2737.0 S -MAMA G WAVE 11 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 5 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 13] Visit: 51 (Pre-transit 1) Visit Requirements: On Hold Comments: Additional Comments: Two exposures 24 hours before transit to observe the unocculted star. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 SEQ 1-3 NON-INT S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2207 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2624 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2207.0 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2624.0 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 14] Visit: 55 (Pre-transit 3) Visit Requirements: On Hold Comments: Additional Comments: One exposure 24 hours before transit to observe the unocculted star. HOPR repeat of visit 5 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 SEQ 1-3 NON-INT S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2167 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2167 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 15] Visit: 56 (Early transit 1) Visit Requirements: AFTER 55 BY 12 H TO 36 H; Period 8.4629991 D AND ZERO-PHASE HJD2458330.39051 On Hold Comments: Additional Comments: 5 exposures ending at mid-transit to capture potential early transit structure. 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-AU-MIC STIS/CCD ACQ F25ND3 MIRROR ACQTYPE=POINT 1 0.1 S (0.1 PHASE 0.96553625219378 S) TO 0.9704596447375258; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S -MAMA G see below (2153 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 4-5 NON-INT -MAMA G see below (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 6-7 NON-INT -MAMA G see below (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 8-9 NON-INT -MAMA G see below (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 10 V-AU-MIC STIS/FUV TIME-TA 0.2X0.2 E140M 1425 BUFFER-TIME=13241, WAVECAL=NO 1 3000 S SEQ 10-11 NON-INT -MAMA G see below (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 17534( 14) - 17-Apr-2025 14:40:37 - [ 16] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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-AU-MIC 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-AU-MIC 2 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 1 2153 S -MAMA G WAVE 3 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA V-AU-MIC 4 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 2 2600 S -MAMA G WAVE 5 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 2 N/A -MAMA V-AU-MIC 6 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 3 2600 S -MAMA G WAVE 7 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 3 N/A -MAMA V-AU-MIC 8 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 4 2600 S -MAMA G WAVE 9 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 4 N/A -MAMA V-AU-MIC 10 STIS/FUV TIME-TA 0.2X0.2 E140M 1425 none none none none 5 2600 S -MAMA G WAVE 11 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 5 N/A -MAMA 17534( 14) - 17-Apr-2025 14:40:37 - [ 17] Summary Form for Proposal 17534 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.2X0.2, F25ND3 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=POINT, BUFFER-TIME=13241, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 03 BY 12 H TO 36 H, AFTER 05 BY 12 H TO 36 H, AFTER 51 BY 12 H TO 36 H, AFTER 55 BY 12 H TO 36 H, PHASE 0.96553625219378 TO 0.9704596447375258, PHASE 0.9852298223687629 TO 0, Period 8.4629991 D AND ZERO-PHASE HJD2458330.39051, SEQ 1-3 NON-INT, SEQ 10-11 NON-INT, SEQ 4-5 NON-INT, SEQ 6-7 NON-INT, SEQ 8-9 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E140M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names V-AU-MIC, WAVE ------------------------------------------------------------------------------------------------------------------------------------