8263( 3) - 02/15/99 12:51 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 8263 Version: 3 Check-in Date: 15-Feb-1999 12:50:53 1.Proposal Title: Snapshots of sub-mJy starburst galaxies ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle SNAP 8 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Stephen Serjeant University of Oxford CoI: Dr. Carlotta Gruppioni Imperial College London N CoI: Dr. Seb Oliver Imperial College London N CoI: Dr. Bahram Mobasher Imperial College London N ------------------------------------------------------------------------------------ 5. Abstract Some of the most ambitious and widely-cited extragalactic observations in recent years have been the constraints made on the star formation history of the Universe. Madau et al (1996) combined ground-based samples with photometric redshifts and UV dropout galaxies from the HDF to obtain the evolving UV luminosity density and hence star formation rate (SFR). From this they inferred a peak and subsequent redshift cutoff in this star formation. If correct this is a major result. However, H-alpha and sub-mm surveys find systematically higher star formation rates, calling into question this behaviour: in essence, by selecting in the UV, Madau et al are highly sensitive to dust reddening. We have recently made a new determination of the comoving star formation density at 05 per pixel. We will use commensurately shorter exposure times for the brighter targets (figure 1). For the B~20-22 galaxies the surface brightness is B>~23.5 per square arcsecond, for which 2*450 second exposures in the Wide Field Camera yield a combined signal-to-noise of >7 per pixel. We will guide from stars rather than using gyroscopic guiding; we plan to publish this data rapidly on receipt and hence agree waive most of the proprietary period. At these redshifts the kpc-scale structure of these galaxies is not accessible to ground-based observations. Real Time Justification ----------------------- Not applicable. Calibration Justification ------------------------- Not applicable Additional Comments ------------------- Not applicable ------------------------------------------------------------------------------------ Data Distribution Paper Products: YES Media: DAT Blocking Factor: 10 Ship To: PI_Address Ship Via: Email: ------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-011043- GALAXY, STARBURST, RA=01H 10M 43.881S +/- 0.1", J2000 R = 20.22+/-0.2 455122 GALAXY, STARBURST DEC=-45D 51' 22.65" +/- 0.1" 2 GAL- GALAXY, STARBURST, RA=8H 55M 47.60S +/- 0.5", J2000 B = 18.7+/-0.2 085547+17022 GALAXY, STARBURST DEC=17D 2' 28.368" +/- 0.5" 8 3 GAL- GALAXY, STARBURST, RA=8H 48M 41.488S +/- 1.5", J2000 V = 22+/-0.2 084841+44510 GALAXY, STARBURST DEC=44D 51' 9.87" +/- 1.5" 9 4 GAL- GALAXY, STARBURST, RA=8H 50M 29.813S +/- 1.5", J2000 V = 18.4+/-0.2 085029+45045 GALAXY, STARBURST DEC=45D 4' 50.70" +/- 1.5" 0 5 GAL- GALAXY, STARBURST, RA=8H 54M 15.6612S +/- 0.5", J2000 B = 19.2+/-0.2 085415+17013 GALAXY, STARBURST DEC=17D 1' 37.338" +/- 0.5" 7 6 GAL- GALAXY, STARBURST, RA=8H 48M 53.433S +/- 1.5", J2000 V = 20.4+/-0.2 084853+44462 GALAXY, STARBURST DEC=44D 46' 26.41" +/- 1.5" 6 7 GAL- GALAXY, STARBURST, RA=8H 54M 58.3311S +/- 0.5", J2000 B = 18.6+/-0.2 085458+17034 GALAXY, STARBURST DEC=17D 3' 46.874" +/- 0.5" 6 8 GAL- GALAXY, STARBURST, RA=13H 2M 51.229S +/- 0.5", J2000 B = 19.5+/-0.2 130251+30104 GALAXY, STARBURST DEC=30D 10' 49.99" +/- 0.5" 9 9 GAL-011225- GALAXY, STARBURST, RA=01H 12M 25.208S +/- 0.5", J2000 R = 18.43+/-0.2 454700 GALAXY, STARBURST DEC=-45D 47' 0.05" +/- 0.5" 10 GAL-011126- GALAXY, STARBURST, RA=01H 11M 26.906S +/- 0.1", J2000 R = 18.57+/-0.2 453416 GALAXY, STARBURST DEC=-45D 34' 16.26" +/- 0.1" 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-085547+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 170228 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-084841+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 445109 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-085029+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 450450 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-130251+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 301049 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-085458+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 170346 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-084853+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 444626 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-085415+ WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 170137 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-011043- WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 455122 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 GAL-011126- WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 453416 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 13] Visit: 10 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-011225- WFPC2 IMAGE PC1 F814W 7921 CR-SPLIT=DEF,CR-TOLERANCE=0.2 1 800 S 454700 ------------------------------------------------------------------------------------------------------------------------------------ 8263( 3) - 02/15/99 12:51 - [ 14] Summary Form for Proposal 8263 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=DEF CR-TOLERANCE=0.2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category SNAP ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names GAL-085547+170228 GAL-084841+445109 GAL-085029+450450 GAL-130251+301049 GAL-085458+170346 GAL-084853+444626 GAL-085415+170137 GAL-011043-455122 GAL-011126-453416 GAL-011225-454700 ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 7921 ------------------------------------------------------------------------------------------------------------------------------------