14894( 5) - 13-Jun-2017 20:22:03 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14894 Version: 5 Check-in Time: 13-Jun-2017 20:22:03 STScI Edit Number: 2 Title Observing the Beta Pic Hill sphere transit in the far-UV ------------------------------------------------------------------------------------ Type Cycle GO 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Paul A. Wilson CNRS, Institut d'Astrophysique de Paris Y CoI: Dr. Alain Lecavelier des Etangs CNRS, Institut d'Astrophysique de Paris N CoI: Dr. Alfred Vidal-Madjar CNRS, Institut d'Astrophysique de Paris N CoI: Dr. Carlo F. Manara European Space Agency - ESTEC N CoI: Dr. Ernst de Mooij The Queen's University of Belfast N CoI: Mr. Jason J. Wang University of California - Berkeley N CoI: Dr. Flavien Kiefer CNRS, Institut d'Astrophysique de Paris N CoI: Dr. Paul George Kalas University of California - Berkeley N ------------------------------------------------------------------------------------ Abstract Starting in April 2017, the Hill sphere of the directly-imaged planet Beta Pic b will start to transit its host-star, Beta Pic. During this event, material in the Hill sphere (e.g. left-over debris from planet formation, rings, gas torus around satellites, etc.) could transit the star. Photometric data from 1981, during a previous event, shows a potential transit signature. Using an accurate transit ephemeris that was just recently calculated, we can predict the exact dates of the upcoming passage. We propose to monitor this transit event using HST and the COS instrument over three visits. This is a very unique opportunity to monitor the transit of the environment of a ~20 million years old young planet that has been imaged in front of a 4th magnitude star; the next such transit will not happen again for another 20 years. The aims for this proposal are to 1) directly detect the composition of the gas in the Hill Sphere of a young planet 2) track the compositional variations as a function of the Hill Sphere radius 3) monitor temporal variations in the circumstellar dust and gas disk before and during the transit, and 4) determine the composition of exocomets present in the Beta Pic system which is independent of the transit of the Hill sphere. ------------------------------------------------------------------------------------ Observations Description ------------------------ We have a total of three visits scheduled. Each visit consists of three orbits. Each visit has an identical observing strategies. For each visit: Orbit 1: Observe target centered in the aperture Orbit 2: The target (Beta Pictoris) is to be offset -1.1 arcseconds in the dispersion direction Orbit 3: The target (Beta Pictoris) is to be offset +1.1 arcseconds in the dispersion direction The 1.1 arcsecond offsets shifts are important for the detection of hydrogen, nitrogen and oxygen which are all affected by airglow contamination. An 14894( 5) - 13-Jun-2017 20:22:03 - [ 2] increase in the off-axis target distance along the dispersion axis effectively shifts the line emission feature in wavelength relative to the airglow emission. ------------------------------------------------------------------------------------ 14894( 5) - 13-Jun-2017 20:22:03 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 -BET-PIC STAR, A4-A9 V-IV, RA=05H47M17.0877S +/- 0.003", J2000 V = 3.861 CIRCUMSTELLAR MATTER, DEC=-51D03'59.44" +/- 0.004" DISK Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 4.933023647591619E-4 0.0831 0.051 ------------------------------------------------------------------------------------------------------------------------------------ 14894( 5) - 13-Jun-2017 20:22:03 - [ 4] Visit: 01 (Visit 1) Visit Requirements: BETWEEN 20-APR-2017:00:00:00 AND 09-MAY-2017:00:00:00 On Hold Comments: Additional Comments: Orbit 1: Observe target centered in the aperture Orbit 2*: The target (Beta Pictoris) is to be offset -1.25 arcseconds in the dispersion direction Orbit 3: The target (Beta Pictoris) is to be offset +1.1 arcseconds in the dispersion direction In orbit 2 we perform an offset of -1.25 arcseconds compared to the standard -1.1 arcseconds. This is to test the effectiveness of the newly developed AVM technique (Wilson et al. 2016). This offset will allow us to better understand the AVM technique's abilibity to separate the stellar Ly-alpha signal away from contaminating airglow. 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 -BET-PIC COS/FUV ACQ/PEA PSA G130M 1327 1 1.4 S (1.4 SEQ 1-3 NON-INT KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -BET-PIC COS/FUV ACQ/PEA PSA G130M 1327 CENTER=DEF, NUM-POS=5, 1 1.4 S (1.4 KD STEP-SIZE=0.9 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S G FP-POS=ALL see below (2104 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 4 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S POS TARG -1.25, null; G FP-POS=ALL see below SEQ 4 NON-INT (2656 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 5 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S POS TARG 1.1, null; SEQ G FP-POS=ALL see below 5 NON-INT (2656 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 14894( 5) - 13-Jun-2017 20:22:03 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ -BET-PIC 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD -BET-PIC 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 1 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 2 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 3 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 4 1 526.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 1 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 2 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 3 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 4 2 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 1 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 2 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 3 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 4 3 664.0 S G 14894( 5) - 13-Jun-2017 20:22:03 - [ 6] Visit: 02 (Visit 2) Visit Requirements: AFTER 01; BETWEEN 08-JUN-2017:00:00:00 AND 03-JUL-2017:00:00:00 On Hold Comments: Additional Comments: Orbit 1: Observe target centered in the aperture Orbit 2: The target (Beta Pictoris) is to be offset -1.1 arcseconds in the dispersion direction Orbit 3: The target (Beta Pictoris) is to be offset +1.1 arcseconds in the dispersion direction 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 -BET-PIC COS/FUV ACQ/PEA PSA G130M 1327 1 1.4 S (1.4 SEQ 1-3 NON-INT KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -BET-PIC COS/FUV ACQ/PEA PSA G130M 1327 CENTER=DEF, NUM-POS=5, 1 1.4 S (1.4 KD STEP-SIZE=0.9 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S G FP-POS=ALL see below (2104 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 4 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S POS TARG -1.1, null; SEQ G FP-POS=ALL see below 4 NON-INT (2656 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 5 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S POS TARG 1.1, null; SEQ G FP-POS=ALL see below 5 NON-INT (2656 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 14894( 5) - 13-Jun-2017 20:22:03 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ -BET-PIC 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD -BET-PIC 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 1 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 2 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 3 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 4 1 526.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 1 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 2 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 3 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 4 2 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 1 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 2 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 3 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 4 3 664.0 S G 14894( 5) - 13-Jun-2017 20:22:03 - [ 8] Visit: 03 (Visit 3) Visit Requirements: AFTER 02; BETWEEN 02-AUG-2017:00:00:00 AND 16-AUG-2017:00:00:00 On Hold Comments: Additional Comments: Orbit 1: Observe target centered in the aperture Orbit 2: The target (Beta Pictoris) is to be offset -1.1 arcseconds in the dispersion direction Orbit 3: The target (Beta Pictoris) is to be offset +1.1 arcseconds in the dispersion direction 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 -BET-PIC COS/FUV ACQ/PEA PSA G130M 1327 NUM-POS=1 1 1.4 S (1.4 SEQ 1-3 NON-INT KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -BET-PIC COS/FUV ACQ/PEA PSA G130M 1327 CENTER=DEF, NUM-POS=5, 1 1.4 S (1.4 KD STEP-SIZE=0.9 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S G FP-POS=ALL see below (2104 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 4 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S POS TARG -1.1, null; SEQ G FP-POS=ALL see below 4 NON-INT (2656 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 5 -BET-PIC COS/FUV TIME-TA PSA G130M 1327 BUFFER-TIME=250, FLASH=YES, 1 534 S POS TARG 1.1, null; SEQ G FP-POS=ALL see below 5 NON-INT (2656 S) Comments: The strength of the Stellar Lyman-alpha line has been set to an conservative upper limit to calculate the Buffer-time and check the Bright Objects Limit (FWHM=5 Angstrom, Flux=1e-11). ------------------------------------------------------------------------------------------------------------------------------------ 14894( 5) - 13-Jun-2017 20:22:03 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ -BET-PIC 1 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KXD -BET-PIC 2 COS/FUV ACQ/PEA PSA G130M 1327 none none none none 1 N/A KD -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 1 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 2 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 3 1 526.0 S G -BET-PIC 3 COS/FUV TIME-TA PSA G130M 1327 none none none 4 1 526.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 1 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 2 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 3 2 664.0 S G -BET-PIC 4 COS/FUV TIME-TA PSA G130M 1327 none none none 4 2 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 1 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 2 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 3 3 664.0 S G -BET-PIC 5 COS/FUV TIME-TA PSA G130M 1327 none none none 4 3 664.0 S G 14894( 5) - 13-Jun-2017 20:22:03 - [ 10] Summary Form for Proposal 14894 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/PEAKD, ACQ/PEAKXD, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=250, CENTER=DEF, FLASH=YES, FP-POS=ALL, NUM-POS=1, NUM-POS=5, STEP-SIZE=0.9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01, AFTER 02, BETWEEN 02-AUG-2017:00:00:00 AND 16-AUG-2017:00:00:00, BETWEEN 08-JUN-2017:00:00:00 AND 03-JUL-2017:00:00:00, BETWEEN 20-APR-2017:00:00:00 AND 09-MAY-2017:00:00:00, POS TARG -1.1, null, POS TARG -1.25, null, POS TARG 1.1, null, SEQ 1-3 NON-INT, SEQ 4 NON-INT, SEQ 5 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M ------------------------------------------------------------------------------------------------------------------------------------ Target Names -BET-PIC ------------------------------------------------------------------------------------------------------------------------------------