8183( 17) - 06/26/02 07:31 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 8183 Version: 17 Check-in Date: 26-Jun-2002 07:30:24 1.Proposal Title: Morphology of the most massive galaxies in the early universe ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 8 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: George Miley Universiteit Leiden CoI: Dr. Huub Rottgering Sterrewacht Leiden Y CoI: Drs. Laura Pentericci Sterrewacht Leiden N CoI: Dr. Patrick McCarthy The Carnegie Observatories N CoI: Dr. Wil van Breugel IGPP N CoI: Drs. Jaron Kurk Sterrewacht Leiden N ------------------------------------------------------------------------------------ 5. Abstract High redshift radio galaxies (HzRGs) are fundamentally important probes of galaxy and cluster formation. They are amongst the most massive galaxies in the early Universe and located in dense cluster environments. Our previous WFPC2 data have revealed that HzRGs are remarkably clumpy on a sub-kiloparsec scale, reminiscent of simulations of forming massive ellipticals. Surprisingly our NICMOS images often show clumpy aligned morphologies unlike those expected from an old elliptical population. There is a wide diversity in HST morphologies and colour distributions for the 9 objects for which we have both WFPC and NICMOS images. We propose to observe obtain WFPC2 images of 10 additional z ~ 2 radio galaxies for which we have NICMOS but no WFPC2 images. The new data will be used to (i) determine the range of clumps colour distributions, thereby constraining the formation history and the nature of the radio/optical alignment effect (ii) compare them with the colours of Lyman--bre ak galaxies (iii) compare them with dust properties and the surmised axis of the jet orientation (iv) confirm relationships between clumpiness and other HzRG properties indicated by our present small sample. These observations will comprise part of a multiwavelength study of HzRGs, involving SCUBA on the JCMT as well as Keck and the VLT. ------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 2] Observations Description ------------------------ Continuum Imaging. We shall image 10 HZRGs with the Planetary Camera. The PC is preferable as a detector than the WFC. Although the signal per pixel will be smaller for the PC, averaging the signal over 4.7 pixels should result in similar sampling to the WFC with very slightly degraded signal to noise. However, given that the substructures and clumps of the radio galaxies have typical sizes of only a few tenths of an arcsecond, we regard the additional spatial resolution provided by the better sampling as a significant advantage. Our targets are all small compared with the field of the PC. Our choice of filter is dictated by three criteria. First bright emission lines (Ly Alpha) should be excluded from the pass band. Second, the filters should result in as large as possible detected light signal. Third, the rest-wavelengths should be as similar as possible over the redshift range and also similar to the rest- wavelengths of the objects observed in the previous cycles. As a re as onable compromise between these criteria, we shall observe all z < 2.2 galaxies through F555W; for the galaxies having 2.2 < z < 2.9 we shall use the F606 filter, which is the most efficent; finally for the z > 2.9 radio galaxies, Ly Alpha contamination will be avoided by observing through F702W. Results of our Cycle 5 and Cycle 6 observations show that an increase of exposure time from 2 to 3 orbits is needed in order to delineate the fainter features of the continuum morphologies and reduce the uncertainties in the WFPC/NICMOS colours. In particular this is true for those galaxies having total magnitudes greater than R ~ 23 (measured with ground based facilities). For the 4 galaxies brighter than R ~ 23 a total exposure time of 2 orbits will be sufficient. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Paper Products: NO Media: DAT Blocking Factor: 10 Ship To: PI_Address Ship Via: Email: ------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 MRC0140-257 GALAXY, RADIO GALAXY, RA=01H 42M 41.2S +/- 0.1S, DEC=- J2000 Z = 2.64 V = 23.4+/-00.1 HIGH REDSHIFT GALAXY 25D 30' 34" +/- 1" 2 MRC0152-209 GALAXY, RADIO GALAXY, RA=01H 54M 55.8S +/- .1S, DEC=- J2000 Z = 1.89 V = 21.7+/-0.1 HIGH REDSHIFT GALAXY 20D 40' 26" +/- 1" 3 MRC0156-252 GALAXY, RADIO GALAXY, RA=01H 58M 33.4S +/- .1S, DEC=- J2000 Z = V = 22.7+/-0.1 HIGH REDSHIFT GALAXY 24D 59' 30" +/- 1" 2.016 4 MRC0316-257 GALAXY, RADIO GALAXY, RA=03H 18M 12.1S +/- 0.1S, DEC=- J2000 Z = 3.14 V = 22.6+/-0.6 HIGH REDSHIFT GALAXY 25D 35' 9" +/- 1" 5 MRC0324-228 GALAXY, RADIO GALAXY, RA=03H 27M 4.4S +/- 0.1S, DEC=- J2000 Z = V = 23.8+/-0.1 HIGH REDSHIFT GALAXY 22D 39' 43" +/- 1" 1.898 6 MRC0350-279 GALAXY, RADIO GALAXY, RA=03H 52M 51.6S +/- 0.1S, DEC=- J2000 Z = 1.90 V = 24.0+/-0.5 HIGH REDSHIFT GALAXY 27D 49' 23" +/- 1" 7 MRC1017-220 GALAXY, RADIO GALAXY, RA=10H 19M 49.0S +/- 0.1S, DEC=- J2000 Z = V = 21.6+/-0.1 HIGH REDSHIFT GALAXY 22D 19' 58" +/- 1" 1.768 8 MRC2048-272 GALAXY, RADIO GALAXY, RA=20H 51M 3.6S +/- 0.1S, DEC=- J2000 Z = 2.06 V = 24.0+/-0.5 HIGH REDSHIFT GALAXY 27D 3' 3" +/- 1" 9 USS2202+128 GALAXY, RADIO GALAXY, RA=22H 5M 14.3S +/- 0.1S, J2000 Z = 2.71 V = 23.1+/-0.1 HIGH REDSHIFT GALAXY DEC=13D 5' 32" +/- 1" 10 MRC2224-273 GALAXY, RADIO GALAXY, RA=22H 27M 43.2S +/- 0.1S, DEC=- J2000 Z = V = 22.4+/-0.2 HIGH REDSHIFT GALAXY 27D 5' 2" +/- 1" 1.678 11 MRC0316-257- GALAXY, RADIO GALAXY, RA=3H 18M 9S +/- 0.0", DEC=-25D J2000 Z = 3.14 V = 22.6+/-0.6 FLD HIGH REDSHIFT GALAXY 36' 0" +/- 0.0" Coordinate Source: OTHER_SOURCE 8183( 17) - 06/26/02 07:31 - [ 4] 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC0140-257 WFPC2 IMAGE PC1 F606W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC0140-257 WFPC2 IMAGE PC1 F606W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 30 MRC0140-257 WFPC2 IMAGE PC1 F606W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 5] Visit: 02 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC0152-209 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC0152-209 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 6] Visit: 03 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC0156-252 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC0156-252 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 7] Visit: 04 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC0316-257 WFPC2 IMAGE PC1 F702W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC0316-257 WFPC2 IMAGE PC1 F702W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 30 MRC0316-257 WFPC2 IMAGE PC1 F702W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 8] Visit: 05 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC0324-228 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC0324-228 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 30 MRC0324-228 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 9] Visit: 06 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC0350-279 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC0350-279 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 30 MRC0350-279 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 10] Visit: 07 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC1017-220 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC1017-220 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 11] Visit: 08 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC2048-272 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC2048-272 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 30 MRC2048-272 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 12] Visit: 09 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 USS2202+128 WFPC2 IMAGE PC1 F606W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 20 USS2202+128 WFPC2 IMAGE PC1 F606W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 30 USS2202+128 WFPC2 IMAGE PC1 F606W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 13] Visit: 0A 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC2224-273 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY GS ACQ SCENARIO SINGLE ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC2224-273 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 14] Visit: 54 Visit Priority: Visit Requirements: ORIENT 305D TO 130D ORIENT 150D TO 285D On Hold Comments: Additional Comments: Radio galaxy is at position 3h18m12.1s,-25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MRC0316-257 ACS/WF ACCUM WFC F814W CR-SPLIT=NO 1 1050 S MAX DUR 200% LOW-SKY POS -FLD C TARG 0.0, 0.0 Comments: Radio galaxy is at position 3h18m12.1s, -25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. ------------------------------------------------------------------------------------------------------------------------------------ 11 MRC0316-257 ACS/WF ACCUM WFC F814W CR-SPLIT=NO 1 1050 S MAX DUR 200% LOW-SKY POS -FLD C TARG 0.248, 3.001 Comments: Closing the gap (+). Radio galaxy is at position 3h18m12.1s,-25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. ------------------------------------------------------------------------------------------------------------------------------------ 12 MRC0316-257 ACS/WF ACCUM WFC F814W CR-SPLIT=NO 1 1050 S MAX DUR 200% LOW-SKY POS -FLD C TARG -0.248,-3.001 Comments: Closing the gap (-). Radio galaxy is at position 3h18m12.1s,-25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. ------------------------------------------------------------------------------------------------------------------------------------ 13 MRC0316-257 ACS/WF ACCUM WFC F814W CR-SPLIT=NO 1 1050 S MAX DUR 200% LOW-SKY POS -FLD C TARG 0.0, 0.0 Comments: Radio galaxy is at position 3h18m12.1s, -25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. ------------------------------------------------------------------------------------------------------------------------------------ 21 MRC0316-257 ACS/WF ACCUM WFC F814W CR-SPLIT=NO 1 1050 S MAX DUR 200% LOW-SKY POS -FLD C TARG 0.248, 3.001 Comments: Closing the gap (+). Radio galaxy is at position 3h18m12.1s,-25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. ------------------------------------------------------------------------------------------------------------------------------------ 22 MRC0316-257 ACS/WF ACCUM WFC F814W CR-SPLIT=NO 1 1050 S MAX DUR 200% LOW-SKY POS -FLD C TARG -0.248,-3.001 Comments: Closing the gap (-). Radio galaxy is at position 3h18m12.1s,-25d35m9s (J2000) so avoid ORIENTS (130-150) and (285-305) to prevend it from falling into the gap. ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 15] Visit: 5A 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 MRC2224-273 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY GS ACQ SCENARIO SINGLE ------------------------------------------------------------------------------------------------------------------------------------ 20 MRC2224-273 WFPC2 IMAGE PC1 F555W 1 2500 S MAX DUR 200% LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 8183( 17) - 06/26/02 07:31 - [ 16] Summary Form for Proposal 8183 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PC1 WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements MAX DUR 200% LOW-SKY MAX DUR 200% LOW-SKY GS ACQ SCENARIO SINGLE ORIENT 305D TO 130D ORIENT 150D TO 285D MAX DUR 200% LOW-SKY POS TARG 0.0, 0.0 MAX DUR 200% LOW-SKY POS TARG 0.248, 3.001 MAX DUR 200% LOW-SKY POS TARG -0.248,-3.001 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W F555W F702W F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names MRC0140-257 MRC0152-209 MRC0156-252 MRC0316-257 MRC0324-228 MRC0350-279 MRC1017-220 MRC2048-272 USS2202+128 MRC2224-273 MRC0316-257-FLD ------------------------------------------------------------------------------------------------------------------------------------