12963( 2) - 02-Jul-2012 20:24:42 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12963 Version: 2 Check-in Time: 02-Jul-2012 20:24:42 STScI Edit Number: 0 Title Spatially Resolving the Disk Mass Accretion Process In Young Star Binaries ------------------------------------------------------------------------------------ Type Cycle GO 20 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Tracy Beck Space Telescope Science Institute Y CoI: Dr. Jeffrey Bary Colgate University N CoI: Dr. Anne Dutrey Universite de Bordeaux N CoI: Dr. Vincent Pietu Institut de Radioastronomie Millimetrique, N Grenoble CoI: Dr. Stephane Guilloteau Universite de Bordeaux N CoI: Dr. Steve Lubow Space Telescope Science Institute N CoI: Dr. Michal Simon State University of New York at Stony N Brook CoI: Dr. Jay Anderson Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract We request HST ACS SBC images in the F140LP and F165LP filters in order to spatially resolve UV emission from H2 gas and scattered light emerging from structures in the planet-forming environments of two young binary systems: GG Tau A and UY Aur. These data, in conjunction with a suite of high-angular resolution ground-based observations -- including spectral images of near-IR H2 emission, mm observations of dust continuum and CO gas emission through allocated ALMA "Cycle 0" observations -- will allow us to characterize the morphology of gas and dust passing between the circumbinary and circumstellar disks. Multi-wavelngth mapping of the distribution of material in GG Tau and UY Aur will reveal the role tidal truncation plays in the formation of planets in binary systems and help to constrain a growing number of hydrodynamic simulations of the complex disk-disk interactions. ------------------------------------------------------------------------------------ Observations Description ------------------------ The observations for this program are straight-forward ACS SBC imaging using the F165LP and F140LP filters. There will be three orbits per filter for each of the two targets in this program. Each orbit will consist of four exposures in an ACS SBC 4pt box dither pattern with total offsets of < 7". There will be a "pos_targ" offset between each orbit so that the dither patterns do not place the stars in the same region of the detector in different exposures. There will be a total of 12 exposures per filter for each of the two targets, for a total of 24 images per source. Hence, there will be a total of 48 images acquired for this program in the allotted 12 orbits. The Phase II observations are set up as: Visit 1: On GG Tau, first 3 orbits execute three 4 point dither patterns in the F140LP filter. Orbits 4-6 execute three 4 point dither patterns in the F165LP filters. Exposure times are on the order of 600-645s per exposure. 12963( 2) - 02-Jul-2012 20:24:42 - [ 2] Visit 2: On UY Aur, orbits 7-9 execute three 4 point dither patterns in the F140LP filter. Orbits 10-12 execute three 4 point dither patterns in the F165LP filters. Exposure times are on the order of 600-645s per exposure. NOTE On Bright Object Flags: For UY Aur, the Bright Object Tool came back with a report that UY Aur is an 05V star that may exceed the health of the SBC MAMA detector! This is totally false. UY Aur is a 12th magnitude late K/early M star. There are no O5 stars within the Taurus/Aurigae star formation complex. The health/safety limits on the SBC MAMA detector should not be exceeded with these observations. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12963( 2) - 02-Jul-2012 20:24:42 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 V-GG-TAU STAR, T TAURI STAR RA=04H32M30.3460S +/- 0.1", J2000 V = 12.34 0.6 cts/s in ACS SBC F165LP DEC=+17D31'40.64" +/- 0.1" (estimated) Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 V-UY-AUR STAR, T TAURI STAR RA=04H51M47.3750S +/- 0.1", J2000 V = 12.9 0.4 cts/s in ACS SBC F165LP DEC=+30D47'13.46" +/- 0.1" (estimated) Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 12963( 2) - 02-Jul-2012 20:24:42 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 1.79 Line_Spacing 1.16 Coordinate_Frame POS-TARG Pattern_Orient 20.02 Angle_Between_Sides 63.65 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 1.969 Line_Spacing 1.276 Coordinate_Frame POS-TARG Pattern_Orient 20.02 Angle_Between_Sides 63.65 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 1.79 Line_Spacing 1.16 Coordinate_Frame POS-TARG Pattern_Orient 20.02 Angle_Between_Sides 63.65 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 12963( 2) - 02-Jul-2012 20:24:42 - [ 5] Visit: 01 Visit Requirements: SCHED 100% 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V-GG-TAU ACS/SBC ACCUM SBC F140LP 1 604 S PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 V-GG-TAU ACS/SBC ACCUM SBC F140LP 1 642 S POS TARG 2, 2; PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 V-GG-TAU ACS/SBC ACCUM SBC F140LP 1 642 S POS TARG -2, -2; PATTERN 3 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 V-GG-TAU ACS/SBC ACCUM SBC F165LP 1 635 S PATTERN 1 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 V-GG-TAU ACS/SBC ACCUM SBC F165LP 1 642 S POS TARG 2, 2; PATTERN 2 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 V-GG-TAU ACS/SBC ACCUM SBC F165LP 1 642 S POS TARG -2, -2; PATTERN 3 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-GG-TAU 1 ACS/SBC ACCUM SBC F140LP 1 none none none 1 N/A V-GG-TAU 1 ACS/SBC ACCUM SBC F140LP 2 none none none 1 N/A V-GG-TAU 1 ACS/SBC ACCUM SBC F140LP 3 none none none 1 N/A V-GG-TAU 1 ACS/SBC ACCUM SBC F140LP 4 none none none 1 N/A V-GG-TAU 2 ACS/SBC ACCUM SBC F140LP 1 none none none 2 N/A V-GG-TAU 2 ACS/SBC ACCUM SBC F140LP 2 none none none 2 N/A V-GG-TAU 2 ACS/SBC ACCUM SBC F140LP 3 none none none 2 N/A V-GG-TAU 2 ACS/SBC ACCUM SBC F140LP 4 none none none 2 N/A V-GG-TAU 3 ACS/SBC ACCUM SBC F140LP 1 none none none 3 N/A V-GG-TAU 3 ACS/SBC ACCUM SBC F140LP 2 none none none 3 N/A V-GG-TAU 3 ACS/SBC ACCUM SBC F140LP 3 none none none 3 N/A V-GG-TAU 3 ACS/SBC ACCUM SBC F140LP 4 none none none 3 N/A V-GG-TAU 4 ACS/SBC ACCUM SBC F165LP 1 none none none 4 N/A V-GG-TAU 4 ACS/SBC ACCUM SBC F165LP 2 none none none 4 N/A V-GG-TAU 4 ACS/SBC ACCUM SBC F165LP 3 none none none 4 N/A V-GG-TAU 4 ACS/SBC ACCUM SBC F165LP 4 none none none 4 N/A V-GG-TAU 5 ACS/SBC ACCUM SBC F165LP 1 none none none 5 N/A V-GG-TAU 5 ACS/SBC ACCUM SBC F165LP 2 none none none 5 N/A V-GG-TAU 5 ACS/SBC ACCUM SBC F165LP 3 none none none 5 N/A V-GG-TAU 5 ACS/SBC ACCUM SBC F165LP 4 none none none 5 N/A 12963( 2) - 02-Jul-2012 20:24:42 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-GG-TAU 6 ACS/SBC ACCUM SBC F165LP 1 none none none 6 N/A V-GG-TAU 6 ACS/SBC ACCUM SBC F165LP 2 none none none 6 N/A V-GG-TAU 6 ACS/SBC ACCUM SBC F165LP 3 none none none 6 N/A V-GG-TAU 6 ACS/SBC ACCUM SBC F165LP 4 none none none 6 N/A 12963( 2) - 02-Jul-2012 20:24:42 - [ 7] Visit: 02 Visit Requirements: SCHED 100% 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 V-UY-AUR ACS/SBC ACCUM SBC F140LP 1 599 S PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 V-UY-AUR ACS/SBC ACCUM SBC F140LP 1 637 S POS TARG 2, 2; PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 V-UY-AUR ACS/SBC ACCUM SBC F140LP 1 637 S POS TARG -2, -2; PATTERN 3 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 V-UY-AUR ACS/SBC ACCUM SBC F165LP 1 631 S PATTERN 1 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 V-UY-AUR ACS/SBC ACCUM SBC F165LP 1 637 S POS TARG 2, 2; PATTERN 2 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 V-UY-AUR ACS/SBC ACCUM SBC F165LP 1 637 S POS TARG -2, -2; PATTERN 3 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-UY-AUR 1 ACS/SBC ACCUM SBC F140LP 1 none none none 1 N/A V-UY-AUR 1 ACS/SBC ACCUM SBC F140LP 2 none none none 1 N/A V-UY-AUR 1 ACS/SBC ACCUM SBC F140LP 3 none none none 1 N/A V-UY-AUR 1 ACS/SBC ACCUM SBC F140LP 4 none none none 1 N/A V-UY-AUR 2 ACS/SBC ACCUM SBC F140LP 1 none none none 2 N/A V-UY-AUR 2 ACS/SBC ACCUM SBC F140LP 2 none none none 2 N/A V-UY-AUR 2 ACS/SBC ACCUM SBC F140LP 3 none none none 2 N/A V-UY-AUR 2 ACS/SBC ACCUM SBC F140LP 4 none none none 2 N/A V-UY-AUR 3 ACS/SBC ACCUM SBC F140LP 1 none none none 3 N/A V-UY-AUR 3 ACS/SBC ACCUM SBC F140LP 2 none none none 3 N/A V-UY-AUR 3 ACS/SBC ACCUM SBC F140LP 3 none none none 3 N/A V-UY-AUR 3 ACS/SBC ACCUM SBC F140LP 4 none none none 3 N/A V-UY-AUR 4 ACS/SBC ACCUM SBC F165LP 1 none none none 4 N/A V-UY-AUR 4 ACS/SBC ACCUM SBC F165LP 2 none none none 4 N/A V-UY-AUR 4 ACS/SBC ACCUM SBC F165LP 3 none none none 4 N/A V-UY-AUR 4 ACS/SBC ACCUM SBC F165LP 4 none none none 4 N/A V-UY-AUR 5 ACS/SBC ACCUM SBC F165LP 1 none none none 5 N/A V-UY-AUR 5 ACS/SBC ACCUM SBC F165LP 2 none none none 5 N/A V-UY-AUR 5 ACS/SBC ACCUM SBC F165LP 3 none none none 5 N/A V-UY-AUR 5 ACS/SBC ACCUM SBC F165LP 4 none none none 5 N/A 12963( 2) - 02-Jul-2012 20:24:42 - [ 8] 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-UY-AUR 6 ACS/SBC ACCUM SBC F165LP 1 none none none 6 N/A V-UY-AUR 6 ACS/SBC ACCUM SBC F165LP 2 none none none 6 N/A V-UY-AUR 6 ACS/SBC ACCUM SBC F165LP 3 none none none 6 N/A V-UY-AUR 6 ACS/SBC ACCUM SBC F165LP 4 none none none 6 N/A 12963( 2) - 02-Jul-2012 20:24:42 - [ 9] Summary Form for Proposal 12963 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures SBC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 1 4, PATTERN 2 2, PATTERN 2 5, PATTERN 3 3, PATTERN 3 6, POS TARG -2, -2, POS TARG 2, 2, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F140LP, F165LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names V-GG-TAU, V-UY-AUR ------------------------------------------------------------------------------------------------------------------------------------