11791( 10) - 21-Oct-2010 16:46:41 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11791 Version: 10 Check-in Time: 21-Oct-2010 16:46:41 STScI Edit Number: 0 Title The Wavelength Dependence of Accretion Disk Structure ------------------------------------------------------------------------------------ Type Cycle GO 17 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. C. S. Kochanek The Ohio State University Research Foundation CoI: Dr. Nicholas D. Morgan The Ohio State University Research N Foundation CoI: Dr. Xinyu Dai The Ohio State University Research N Foundation CoI: Dr. Eric Agol University of Washington N ------------------------------------------------------------------------------------ Abstract We can now routinely measure the size of quasar accretion disks using gravitational microlensing of lensed quasars. The next step to testing accretion disk models is to measure the size of accretion disks as a function of wavelength, particularly at the UV and X-ray wavelengths that should probe the inner, strong gravity regime. Here we focus on two four-image quasar lenses that already have optical (R band) and X-ray size measurements using microlensing. We will combine the HST observations with ground-based monitoring to measure the disk size as a function of wavelength from the near-IR to the UV. We require HST to measure the image flux ratios in the ultraviolet continuum near the Lyman limit of the quasars. The selected targets have estimated black hole masses that differ by an order of magnitude, and we should find wavelength scalings for the two systems that are very different because the Blue/UV wavelengths should correspond to parts of the disk near the inner edge for the high mass system but not in the low mass system. The results will be modeled using a combination of simple thin disk models and complete relativistic disk models. While requiring only 18 orbits, success for one system requires observations in both Cycles 16 and 17. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will be monitoring two gravitational lenses with the SBC/F165LP. The epochs should be spaced to span the visibility periods with roughly equal time periods between the observations. The visibility periods are May-September for Q2237 and December-March for RXJ1131. There are a further 6 epochs approved for Q2237 in Cycle 17, but not scheduled here. The observations themselves are simple single orbit, 4 position dithered SBC/F165LP observations. We have one such image of RXJ1131 already, and the 11791( 10) - 21-Oct-2010 16:46:41 - [ 2] results are as expected. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11791( 10) - 21-Oct-2010 16:46:41 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 Q2237+0305 GALAXY, GRAVITATIONAL RA=22H40M30.3400S +/- 0.1", J2000 V = 17 LENS DEC=+03D21'28.80" +/- 0.1" Reference Frame: Other: previous HST observations Comments: ------------------------------------------------------------------------------------------------------------------------------------ 2 RXJ1131-1231 GALAXY, ACCRETION DISK, RA=11H31M51.6000S +/- 0.1", J2000 V = 18 GRAVITATIONAL LENS DEC=-12D31'57.00" +/- 0.1" Reference Frame: Other: previous HST observations Comments: ------------------------------------------------------------------------------------------------------------------------------------ 11791( 10) - 21-Oct-2010 16:46:41 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.179 Line_Spacing 0.116 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 WFC3-UVIS-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.145 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 11791( 10) - 21-Oct-2010 16:46:41 - [ 5] Visit: 01 Visit Requirements: BETWEEN 01-AUG-2008:00:00:00 AND 30-AUG-2008:00:00:00 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 Q2237+0305 ACS/SBC ACCUM SBC F165LP 1 600.0 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 1 none none none 1 629.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 2 none none none 1 629.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 3 none none none 1 629.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 4 none none none 1 629.0 S 11791( 10) - 21-Oct-2010 16:46:41 - [ 6] Visit: 02 Visit Requirements: BETWEEN 01-SEP-2010:00:00:00 AND 31-MAR-2011:00:00:00 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 Q2237+0305 WFC3/UVI ACCUM UVIS1 F218W 1 600.0 S PATTERN 2 1 S see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q2237+0305 1 WFC3/UVI ACCUM UVIS1 F218W 1 none none 1 1 627.0 S S Q2237+0305 1 WFC3/UVI ACCUM UVIS1 F218W 1 none none 2 1 627.0 S S Q2237+0305 1 WFC3/UVI ACCUM UVIS1 F218W 2 none none 1 1 627.0 S S Q2237+0305 1 WFC3/UVI ACCUM UVIS1 F218W 2 none none 2 1 627.0 S S 11791( 10) - 21-Oct-2010 16:46:41 - [ 7] Visit: 03 Visit Requirements: BETWEEN 01-SEP-2009:15:55:09 AND 31-OCT-2009:15:55:09 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 Q2237+0305 ACS/SBC ACCUM SBC F165LP 1 600.0 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 1 none none none 1 660.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 2 none none none 1 660.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 3 none none none 1 660.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 4 none none none 1 660.0 S 11791( 10) - 21-Oct-2010 16:46:41 - [ 8] Visit: 04 Visit Requirements: BETWEEN 01-DEC-2009:15:55:34 AND 15-JAN-2010:15:55:34 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 Q2237+0305 ACS/SBC ACCUM SBC F165LP 1 600.0 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 1 none none none 1 660.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 2 none none none 1 660.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 3 none none none 1 660.0 S Q2237+0305 1 ACS/SBC ACCUM SBC F165LP 4 none none none 1 660.0 S 11791( 10) - 21-Oct-2010 16:46:41 - [ 9] Visit: 05 Visit Requirements: BETWEEN 15-NOV-2009:00:00:00 AND 15-FEB-2010:00:00:00 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 RXJ1131-123 ACS/SBC ACCUM SBC F165LP 1 600.0 S PATTERN 1 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 1 none none none 1 664.0 S RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 2 none none none 1 664.0 S RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 3 none none none 1 664.0 S RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 4 none none none 1 664.0 S 11791( 10) - 21-Oct-2010 16:46:41 - [ 10] Visit: 06 Visit Requirements: GYRO MODE 2G; BETWEEN 01-MAR-2009:00:00:00 AND 30-MAR-2009:00:00:00 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 RXJ1131-123 ACS/SBC ACCUM SBC F165LP 1 600.0 S GS ACQ SCENARIO BASE1T3; 1 see below PATTERN 1 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 | ------------------------------------------------------------------------------------------------------------------------------------ RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 1 none none none 1 629.0 S RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 2 none none none 1 629.0 S RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 3 none none none 1 629.0 S RXJ1131-1231 1 ACS/SBC ACCUM SBC F165LP 4 none none none 1 629.0 S 11791( 10) - 21-Oct-2010 16:46:41 - [ 11] Summary Form for Proposal 11791 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures SBC, UVIS1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-AUG-2008:00:00:00 AND 30-AUG-2008:00:00:00, BETWEEN 01-DEC-2009:15:55:34 AND 15-JAN-2010:15:55:34, BETWEEN 01-MAR-2009:00:00:00 AND 30-MAR-2009:00:00:00, BETWEEN 01-SEP-2009:15:55:09 AND 31-OCT-2009:15:55:09, BETWEEN 01-SEP-2010:00:00:00 AND 31-MAR-2011:00:00:00, BETWEEN 15-NOV-2009:00:00:00 AND 15-FEB-2010:00:00:00, GS ACQ SCENARIO BASE1T3, GYRO MODE 2G, PATTERN 1 1, PATTERN 2 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F165LP, F218W ------------------------------------------------------------------------------------------------------------------------------------ Target Names Q2237+0305, RXJ1131-1231 ------------------------------------------------------------------------------------------------------------------------------------