12195( 2) - 29-Jun-2010 13:28:55 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12195 Version: 2 Check-in Time: 29-Jun-2010 13:28:55 STScI Edit Number: 0 Title Understanding the Largest Quasar Lens SDSS J1029+2623 ------------------------------------------------------------------------------------ Type Cycle GO 18 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Masamune Oguri National Astronomical Observatory of Japan (NAOJ) CoI: Dr. Eran O. Ofek California Institute of Technology N CoI: Dr. Eric Jullo Jet Propulsion Laboratory N CoI: Prof. Gordon T. Richards Drexel University N CoI: Dr. Xinyu Dai University of Oklahoma Norman Campus N CoI: Dr. Emilio E. Falco Smithsonian Institution Astrophysical N Observatory CoI: Prof. C. S. Kochanek The Ohio State University Research N Foundation CoI: Dr. Naohisa Inada RIKEN Wako Institute N CoI: Prof. Naomi Ota Tokyo University of Science N CoI: Dr. Tomoki Morokuma National Astronomical Observatory of Japan N (NAOJ) ------------------------------------------------------------------------------------ Abstract We propose multi-band WFC3/ACS imaging of the unique quasar lens SDSS J1029+2623. It consists of three quasar images at z=2.2 produced by a massive cluster of galaxies at z=0.60. The lens system represents a very rare example of the ``naked cusp'' image configuration, and moreover, the maximum image separation of 22.5'' makes it the largest known quasar lens. We will use the deep WFC3/ACS images to identify many additional multiply-imaged background galaxies, which greatly helps the mass modeling of the central region of the cluster. An accurate mass model is essential to addressing several outstanding questions for this lens, including the anomalous flux ratios between the quasar images and the dynamical state of the lensing cluster. The model will be particularly good because we can combine the strong lensing constraints from HST with our weak lensing measurements on large scales, and also with our deep 60 ksec Chandra X-ray observations. ------------------------------------------------------------------------------------ Observations Description ------------------------ For reasonable photometric redshifts we need good wavelength coverage. Thus we allocate 2 orbits to F475W filter (ACS/WFC), 3 orbits to the F814W filter (ACS/WFC), and 2 orbits to the F160W filter (WFC3/IR), covering from g- to H-band. Note that we have modified the filter set for the observation from phase I, following the recommendation by the TAC/Panel. Real Time Justification ----------------------- 12195( 2) - 29-Jun-2010 13:28:55 - [ 2] Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12195( 2) - 29-Jun-2010 13:28:55 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ1029+26 CLUSTER OF GALAXIES, RA=10H29M13.3500S +/- 0.1", J2000 V = 18.7 +/- 0.5 23 GRAVITATIONAL LENS, DEC=+26D23'32.80" +/- 0.1" HIGH REDSHIFT CLUSTER Reference Frame: ICRS Comments: ------------------------------------------------------------------------------------------------------------------------------------ 12195( 2) - 29-Jun-2010 13:28:55 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type LINE LINE Pattern_Purpose DITHER DITHER Number_Of_Points 2 2 Point_Spacing 6.10486 3.08553 Line_Spacing Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 91.16385 85.38987 Angle_Between_Sides Center_Pattern YES NO Pattern_Comments: pattern used in 11591 ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 3.08553 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 91.16385 Angle_Between_Sides Center_Pattern YES Pattern_Comments: pattern used in 11591 ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 12195( 2) - 29-Jun-2010 13:28:55 - [ 5] Visit: 01 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ1029+2 ACS/WFC ACCUM WFC-FIX F475W 1 1200 S PATTERN 1 1 623 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F475W 1 1 none none 1 1271.0 S SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F475W 1 2 none none 1 1271.0 S SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F475W 2 1 none none 2 1367.0 S SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F475W 2 2 none none 2 1367.0 S 12195( 2) - 29-Jun-2010 13:28:55 - [ 6] Visit: 02 Visit Requirements: SAME ORIENT AS 01 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 SDSSJ1029+2 ACS/WFC ACCUM WFC-FIX F814W 1 1200 S PATTERN 1 1 623 see below ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1029+2 ACS/WFC ACCUM WFC-FIX F814W 1 1200 S PATTERN 2 2 623 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F814W 1 1 none none 1 1271.0 S SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F814W 1 2 none none 1 1271.0 S SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F814W 2 1 none none 2 1367.0 S SDSSJ1029+2623 1 ACS/WFC ACCUM WFC-FIX F814W 2 2 none none 2 1367.0 S SDSSJ1029+2623 2 ACS/WFC ACCUM WFC-FIX F814W 1 none none none 3 1367.0 S SDSSJ1029+2623 2 ACS/WFC ACCUM WFC-FIX F814W 2 none none none 3 1367.0 S 12195( 2) - 29-Jun-2010 13:28:55 - [ 7] Visit: 03 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ1029+2 WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS50, NSAMP=14 1 DEF PATTERN 3 1 623 CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1029+2 WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS50, NSAMP=14 1 DEF PATTERN 3 2 623 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1029+2623 1 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM SDSSJ1029+2623 1 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM SDSSJ1029+2623 1 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM SDSSJ1029+2623 1 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM SDSSJ1029+2623 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM SDSSJ1029+2623 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM SDSSJ1029+2623 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM SDSSJ1029+2623 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 2 N/A CUM 12195( 2) - 29-Jun-2010 13:28:55 - [ 8] Summary Form for Proposal 12195 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX, WFC-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=14, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 2 2, PATTERN 3 1, PATTERN 3 2, SAME ORIENT AS 01 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W, F475W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SDSSJ1029+2623 ------------------------------------------------------------------------------------------------------------------------------------