15253( 2) - 20-Jul-2017 00:23:40 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15253 Version: 2 Check-in Time: 20-Jul-2017 00:23:40 STScI Edit Number: 0 Title The nature of ultra-massive lens galaxies ------------------------------------------------------------------------------------ Type Cycle GO 25 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Raoul Canameras University of Copenhagen, Niels Bohr Y Institute CoI: Dr. Claudio Grillo University of Copenhagen, Niels Bohr N Institute CoI: Dr. Lise Christensen University of Copenhagen, Niels Bohr N Institute CoI: Mr. M. Barnabe Max-Planck-Institut fur Astrophysik N ------------------------------------------------------------------------------------ Abstract During the past decade, strong gravitational lensing analyses have contributed tremendously to the characterization of the inner properties of massive early-type galaxies, beyond the local Universe. Here we intend to extend studies of this kind to the most massive lens galaxies known to date, well outside the mass limits investigated by previous lensing surveys. This will allow us to probe the physics of the likely descendants of the most violent episodes of star formation and of the compact massive galaxies at high redshift. We propose WFC3 imaging (F438W and F160W) of four extremely massive early-type lens galaxies at z ~ 0.5, in order to put them into context with the evolutionary trends of ellipticals as a function of mass and redshift. These systems were discovered in the SDSS and show one single main lens galaxy with a stellar mass above 1.5x10^12 Msun and large Einstein radii. Our high-resolution spectroscopic follow-up with VLT/X-shooter provides secure lens and source redshifts, between 0.3 and 0.7 and between 1.5 and 2.5, respectively, and confirm extreme stellar velocity dispersions >~400 km/s for the lenses. The excellent angular resolution of the proposed WFC3 imaging - not achievable from the ground - is the remaining indispensable piece of information to : (1) Resolve the lens structural parameters and obtain robust measurements of their stellar mass distributions, (2) Model the amount and distribution of the lens total masses and measure their M/L ratios and stellar IMF with joint strong lensing and stellar dynamics analyses, (3) Enhance our on-going lens models through the most accurate positions and morphologies of the blue multiply-imaged sources. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program aims to image the 4 ultra-massive lens galaxies in the target list. Each target is imaged in 2 filters (WFC3/UVIS F438W and WFC3/IR F160W), 15253( 2) - 20-Jul-2017 00:23:40 - [ 2] with 1 orbit per filter. All the orbits can be run independently of each other. One of the targets, CSWA31, falls about 50 arcsec away from a bright star with H~11. Since the primary targets (the lens and background lensed galaxies) are much fainter, we want to avoid the diffraction spikes of the bright star. Table 7.4 in P2PI specifies that to place the target along rows in UVIS, the orientation is target_angle +221 deg. For the IR aperture the angle is target_angle +224 deg. CSWA31 has a position angle of ~170 deg, which leads to the following orientation angles (with a +/-10 deg flexibility): ------- IR ORIENT: 170 +224 = 394 (= 34). Allow a +/-90 and-180 ORIENT and a +/-10 deg range. Allowed ORIENT ranges: 24 - 44 , 114 - 134, 204 - 224, 294 - 314 ------- UVIS ORIENT: 170 +221 = 391 ( =31 ). Allow a +90 and -180 ORIENT and a +/-10 deg range. Allowed ORIENT ranges: 21 - 41, 111 -131, 201 - 221, 291-311 ------------------------------------------------------------------------------------ 15253( 2) - 20-Jul-2017 00:23:40 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA15 GALAXY, EINSTEIN RING, RA=01H00M49.1900S, J2000 Z = g-band AB-mag from the SDSS: 21.48 +/- ELLIPTICAL, DEC=+18D18'27.70" 0.581 0.12 GRAVITATIONAL LENS Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 CSWA31 GALAXY, EINSTEIN RING, RA=09H21M25.7400S, J2000 Z = g-band AB-mag from the SDSS: 22.52 +/- ELLIPTICAL, DEC=+18D10'17.30" 0.683 0.44 GRAVITATIONAL LENS Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 CSWA63 GALAXY, EINSTEIN RING, RA=21H58M43.6700S, J2000 Z = g-band AB-mag from the SDSS: 19.38 +/- ELLIPTICAL, DEC=+02D57'30.20" 0.287 0.02 GRAVITATIONAL LENS Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 CSWA64 GALAXY, EINSTEIN RING, RA=02H32M49.8600S, J2000 Z = g-band AB-mag from the SDSS: 19.70 +/- ELLIPTICAL, DEC=-03D23'26.02" 0.453 0.04 GRAVITATIONAL LENS Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 15253( 2) - 20-Jul-2017 00:23:40 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 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 ------------------------------------------------------------------------------------------------------------------------------------ 15253( 2) - 20-Jul-2017 00:23:40 - [ 5] Visit: 01 (CSWA15-UVIS-F438W) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA15 WFC3/UVI ACCUM UVIS F438W FLASH=6 1 200 S PATTERN 1 1 S see below (2476 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA15 1 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 619.0 S S CSWA15 1 WFC3/UVI ACCUM UVIS F438W 2 none none none 1 619.0 S S CSWA15 1 WFC3/UVI ACCUM UVIS F438W 3 none none none 1 619.0 S S CSWA15 1 WFC3/UVI ACCUM UVIS F438W 4 none none none 1 619.0 S S 15253( 2) - 20-Jul-2017 00:23:40 - [ 6] Visit: 02 (CSWA15-IR-F160W) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA15 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM (2611.753 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA15 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM CSWA15 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM CSWA15 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM CSWA15 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 15253( 2) - 20-Jul-2017 00:23:40 - [ 7] Visit: 03 (CSWA31-UVIS-F438W) Visit Requirements: ORIENT 21D TO 41 D; ORIENT 111D TO 131 D; ORIENT 201D TO 221 D; ORIENT 291D TO 311 D 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA31 WFC3/UVI ACCUM UVIS F438W FLASH=6 1 200 S PATTERN 1 1 S see below (2476 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA31 1 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 619.0 S S CSWA31 1 WFC3/UVI ACCUM UVIS F438W 2 none none none 1 619.0 S S CSWA31 1 WFC3/UVI ACCUM UVIS F438W 3 none none none 1 619.0 S S CSWA31 1 WFC3/UVI ACCUM UVIS F438W 4 none none none 1 619.0 S S 15253( 2) - 20-Jul-2017 00:23:40 - [ 8] Visit: 04 (CSWA31-IR-F160W) Visit Requirements: ORIENT 24D TO 44 D; ORIENT 114D TO 134 D; ORIENT 204D TO 224 D; ORIENT 294D TO 314 D 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA31 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM (2611.753 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA31 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM CSWA31 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM CSWA31 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM CSWA31 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 15253( 2) - 20-Jul-2017 00:23:40 - [ 9] Visit: 05 (CSWA63-UVIS-F438W) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA63 WFC3/UVI ACCUM UVIS F438W FLASH=7 1 200 S PATTERN 1 1 S see below (2452 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA63 1 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 613.0 S S CSWA63 1 WFC3/UVI ACCUM UVIS F438W 2 none none none 1 613.0 S S CSWA63 1 WFC3/UVI ACCUM UVIS F438W 3 none none none 1 613.0 S S CSWA63 1 WFC3/UVI ACCUM UVIS F438W 4 none none none 1 613.0 S S 15253( 2) - 20-Jul-2017 00:23:40 - [ 10] Visit: 06 (CSWA63-IR-F160W) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA63 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM (2611.753 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA63 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM CSWA63 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM CSWA63 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM CSWA63 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 15253( 2) - 20-Jul-2017 00:23:40 - [ 11] Visit: 07 (CSWA64-UVIS-F438W) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA64 WFC3/UVI ACCUM UVIS F438W FLASH=7 1 200 S PATTERN 1 1 S see below (2452 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA64 1 WFC3/UVI ACCUM UVIS F438W 1 none none none 1 613.0 S S CSWA64 1 WFC3/UVI ACCUM UVIS F438W 2 none none none 1 613.0 S S CSWA64 1 WFC3/UVI ACCUM UVIS F438W 3 none none none 1 613.0 S S CSWA64 1 WFC3/UVI ACCUM UVIS F438W 4 none none none 1 613.0 S S 15253( 2) - 20-Jul-2017 00:23:40 - [ 12] Visit: 08 (CSWA64-IR-F160W) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CSWA64 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM (2611.753 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CSWA64 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM CSWA64 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM CSWA64 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM CSWA64 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 15253( 2) - 20-Jul-2017 00:23:40 - [ 13] Summary Form for Proposal 15253 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, UVIS ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=6, FLASH=7, NSAMP=14, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 111D TO 131 D, ORIENT 114D TO 134 D, ORIENT 201D TO 221 D, ORIENT 204D TO 224 D, ORIENT 21D TO 41 D, ORIENT 24D TO 44 D, ORIENT 291D TO 311 D, ORIENT 294D TO 314 D, PATTERN 1 1, PATTERN 2 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W, F438W ------------------------------------------------------------------------------------------------------------------------------------ Target Names CSWA15, CSWA31, CSWA63, CSWA64 ------------------------------------------------------------------------------------------------------------------------------------