7941( 3) - 04/20/98 11:28 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 7941 Version: 3 Check-in Date: 20-Apr-1998 11:24:57 1.Proposal Title: NICMOS observations of Gravitationally-Magnified Galaxy ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO/DD 7 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Garth Illingworth LICK OBSERVATORY CoI: Marijn Franx University of Leiden Y CoI: Pieter van Dokkum University of Groningen N CoI: Dan Kelson University of California N ------------------------------------------------------------------------------------ 5. Abstract We have discovered the highest redshift object known with a confirmed redshift from Keck spectra of z=4.92 (Franx et al, 1997, ApJ Letters 486, L75). The galaxy is a red arc lensed by a foreground cluster. This provides a unique advantage, because the arc is highly magnified (by a factor of 5 to 11, depending on the exact position within the arc). We have been able to reconstruct the original image very successfully from this highly magnified arc. This is one of the highest resolution images available on any high redshift galaxy The discovery was based on a large WFPC2 mosaic of the cluster CL1358+62. Here we propose to take NICMOS imaging to determine the morphology and size of the galaxy at 2700 A rest wavelength. This data is crucial for a good understanding of the stellar population, and to test the presence of an older, underlying population. We have already obtained IR imaging with the KECK telescope, which has shown that the galaxy is much redder than expected for a young burst of star formation. The consequence is that a significant amount of dust is present. Furthermore, the mass has increased to 1-2 10**9 solar masses. This dramatic increase in the mass follows immediately from the IR fluxes, and is not dependent on the assumptions concerning the dust. The NICMOS images will help to establish the morphology of the lensed galaxy in the IR, and will be necessary to detect possible color variations across the arc. ------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 2] Observations Description ------------------------ We take 3 orbits each in both J and H, NICMOS. We split up each orbit into two. The 6 exposures per passband are dithered. The scale in x and y direction slightly different. LOWSKY requested because this field lies in CVZ, and telescope could have bright background if not required. Only alternative is to request CVZ plain. No orient specified. Parallels taken with WFPC (450W and 555W), and STIS (plain imaging). Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Media: ELECTRONIC Blocking Factor: 10 Ship To: PI_Address Ship Via: Email: ------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-CLUS- CLUSTER OF GALAXIES, RA=13H 58M 19.416S +/- 0.01S, B1950 Z=4.92 V = 24 135951+62310 RICH CLUSTER DEC=62D 45' 17.169" +/- 0.3" 5-ARC 7941( 3) - 04/20/98 11:28 - [ 4] TARGET LIST c)Generic Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Selection Criteria | Flux data No | Name | Description | | ------------------------------------------------------------------------------------------------------------------------------------ CL1358.NIC1 UNIDENTIFIED, Parallel RA=13H 58M,DEC=63D,R=10D V = 21.5+/-0.5 Field Comments: T <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< his pointing is a generic field near CL1358 to be imaged in parallel with NIC1 ------------------------------------------------------------------------------------------------------------------------------------ CL1358.NIC3 UNIDENTIFIED, Parallel RA=13H 58M,DEC=63D,R=10D V = 21.5+/-0.5 Field Comments: T <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< his pointing is a generic field near CL1358 to be imaged in parallel with NIC3 ------------------------------------------------------------------------------------------------------------------------------------ CL1358.WFPC2 UNIDENTIFIED, Parallel RA=13H 58M,DEC=63D,R=10D V = 21.5+/-0.5 Field Comments: T <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< his pointing is a generic field near CL1358 to be imaged in parallel with WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ CL1358.STIS UNIDENTIFIED, Parallel RA=15H 49M,DEC=21D,R=10D V = 21.5+/-0.5 Field Comments: T <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< his pointing is a generic field near CL1358 to be targeted for parallel imaging and slitless spectroscopy with STIS ------------------------------------------------------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 5] Visit: 01 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F160W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 2-5 WITH 1 LOW-SKY 5951+623105 CUM X POS TARG -0.76216, -ARC -0.453012 ------------------------------------------------------------------------------------------------------------------------------------ 2 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 3 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 4 CL1358.WFPC WFPC2 IMAGE WFALL F450W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 5 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 11 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F160W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 12-15 WITH 11 LOW-SKY 5951+623105 CUM X POS TARG 0.800268, -ARC -0.264257 ------------------------------------------------------------------------------------------------------------------------------------ 12 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 13 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 14 CL1358.WFPC WFPC2 IMAGE WFALL F450W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 15 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 21 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F160W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 22-25 WITH 21 LOW-SKY 5951+623105 CUM X POS TARG -0.609728, -ARC -0.151004 ------------------------------------------------------------------------------------------------------------------------------------ 22 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 23 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 24 CL1358.WFPC WFPC2 IMAGE WFALL F450W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 25 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 31 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F110W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 32-35 WITH 31 LOW-SKY 5951+623105 CUM X POS TARG 1.71486, -ARC 0.188755 ------------------------------------------------------------------------------------------------------------------------------------ 32 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 33 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 34 CL1358.WFPC WFPC2 IMAGE WFALL F450W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 35 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 41 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F110W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 42-45 WITH 41 LOW-SKY 5951+623105 CUM X POS TARG -0.876484, -ARC 0.302008 ------------------------------------------------------------------------------------------------------------------------------------ 42 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 43 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 44 CL1358.WFPC WFPC2 IMAGE WFALL F450W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 45 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 51 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F110W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 52-55 WITH 51 LOW-SKY 5951+623105 CUM X POS TARG 0.609728, -ARC 0.490763 ------------------------------------------------------------------------------------------------------------------------------------ 52 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 7] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 53 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 54 CL1358.WFPC WFPC2 IMAGE WFALL F450W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 55 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 61 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F110W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 62-65 WITH 61 LOW-SKY 5951+623105 CUM X POS TARG -0.76216, -ARC -0.453012 ------------------------------------------------------------------------------------------------------------------------------------ 62 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 63 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 64 CL1358.WFPC WFPC2 IMAGE WFALL F555W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 65 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 71 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F110W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 72-75 WITH 71 LOW-SKY 5951+623105 CUM X POS TARG 0.800268, -ARC -0.264257 ------------------------------------------------------------------------------------------------------------------------------------ 72 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 73 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 74 CL1358.WFPC WFPC2 IMAGE WFALL F555W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 75 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 81 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F110W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 82-85 WITH 81 LOW-SKY 5951+623105 CUM X POS TARG -0.609728, -ARC -0.151004 ------------------------------------------------------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 82 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 83 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 84 CL1358.WFPC WFPC2 IMAGE WFALL F555W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 85 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 91 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F160W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 92-95 WITH 91 LOW-SKY 5951+623105 CUM X POS TARG 1.71486, -ARC 0.188755 ------------------------------------------------------------------------------------------------------------------------------------ 92 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 93 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 94 CL1358.WFPC WFPC2 IMAGE WFALL F555W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 95 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 101 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F160W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 102-105 WITH 101 5951+623105 CUM X LOW-SKY POS TARG -ARC -0.876484, 0.302008 ------------------------------------------------------------------------------------------------------------------------------------ 102 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 103 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 104 CL1358.WFPC WFPC2 IMAGE WFALL F555W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 105 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 9] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 111 GAL-CLUS-13 NIC2 MULTIAC NIC2-FI F160W SAMP-SEQ=SPARS64,NSAMP=22 1 DEF PAR 112-115 WITH 111 5951+623105 CUM X LOW-SKY POS TARG 0.609728 -ARC , 0.490763 ------------------------------------------------------------------------------------------------------------------------------------ 112 CL1358.NIC1 NIC1 MULTIAC NIC1-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 113 CL1358.NIC3 NIC3 MULTIAC NIC3-FI F160W SAMP-SEQ=SPARS64,NSAMP=21 1 DEF CUM X ------------------------------------------------------------------------------------------------------------------------------------ 114 CL1358.WFPC WFPC2 IMAGE WFALL F555W CR-SPLIT=0.0 1 900.00 2 Comments: Half-orbit integration in optical filter ------------------------------------------------------------------------------------------------------------------------------------ 115 CL1358.STIS STIS/C ACCUM 50CCD MIRROR CR-SPLIT=2,GAIN=1 1 9 M CD Comments: Deep Image with STIS ------------------------------------------------------------------------------------------------------------------------------------ 7941( 3) - 04/20/98 11:28 - [ 10] Summary Form for Proposal 7941 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations NIC2 NIC1 NIC3 WFPC2 STIS/CCD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SAMP-SEQ=SPARS64 NSAMP=22 NSAMP=21 CR-SPLIT=0.0 GAIN=1 CR-SPLIT=2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO/DD ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PAR 2-5 WITH 1 LOW-SKY POS TARG -0.76216, -0.453012 PAR 12-15 WITH 11 LOW-SKY POS TARG 0.800268, -0.264257 PAR 22-25 WITH 21 LOW-SKY POS TARG -0.609728, -0.151004 PAR 32-35 WITH 31 LOW-SKY POS TARG 1.71486, 0.188755 PAR 42-45 WITH 41 LOW-SKY POS TARG -0.876484, 0.302008 PAR 52-55 WITH 51 LOW-SKY POS TARG 0.609728, 0.490763 PAR 62-65 WITH 61 LOW-SKY POS TARG -0.76216, -0.453012 PAR 72-75 WITH 71 LOW-SKY POS TARG 0.800268, -0.264257 PAR 82-85 WITH 81 LOW-SKY POS TARG -0.609728, -0.151004 PAR 92-95 WITH 91 LOW-SKY POS TARG 1.71486, 0.188755 PAR 102-105 WITH 101 LOW-SKY POS TARG -0.876484, 0.302008 PAR 112-115 WITH 111 LOW-SKY POS TARG 0.609728, 0.490763 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W F450W MIRROR F110W F555W ------------------------------------------------------------------------------------------------------------------------------------ Target Names GAL-CLUS-135951+623105-ARC CL1358.NIC1 CL1358.NIC3 CL1358.WFPC2 CL1358.STIS ------------------------------------------------------------------------------------------------------------------------------------