Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1027c Report Date: 09-May-96:16:03 Version: ********** Check-in Date: ********** 1.Proposal Title: UV SPECTRA OF QSOS WITH Z > 3.1: CYCLE 0 OBSERVATIONS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN GTO/FOS Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone E. margaret Burbidge UC, SAN DIEGO USA (619) 452-4477 ------------------------------------------------------------------------------------ 7. Abstract Observe for the first time the extreme UV rest spectrum of QSOs with z > 3.1, to examine HeI and HeII in absorption and/or emission; perform Gunn-Peterson test for smooth intergalactic helium, determine and compare density of Lyman alpha forests of narrow absorptions per unit z; look for correlations of strongest narrow Lyman alpha absorptions with narrow helium absorptions; look for associated or intervening galaxies. ------------------------------------------------------------------------------------ 8. Scientific Key Words: HIGH REDSHIFT QSOS; HELIUM, INTERGALACTIC HELIUM. ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 10.27 par: 0 10. Num targs pri: 5 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1027c PI: E. margaret Burbidge Proposal Title: UV SPECTRA OF QSOS WITH Z > 3.1: CYCLE 0 OBSERVATIONS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Edward Beaver UC, SAN DIEGO USA E. Margaret Burbidge UC, SAN DIEGO USA Bruce Margon WASHINGTON, UNIVERSITY OF USA J. Roger P. Angel ARIZONA, UNIVERSITY OF USA Frank Bartko MARTIN MARIETTA CORPORATION USA Arthur F. Davidsen JOHNS HOPKINS UNIVERSITY USA Richard J. Harms APPLIED RESEARCH CORPORATION USA Ralph Bohlin SPACE TELESCOPE SCIENCE USA INSTITUTE Holland C. Ford SPACE TELESCOPE SCIENCE USA INSTITUTE ------------------------------------------------------------------------------------ 3. Description of proposed observations. 7 high redshift quasars will be observed with the FOS at low dispersion. Those with enough light will be observed with the high resolution gratings to S/N ~ 15. 0014 will be observed at high resolution in any case. Cycle 0: Exposures 8, 10, 14 Cycle 1: Exposures 8.1, 10.1, 14.1 Cycle 2: Exposures 9, 16-26 ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. HST observations are needed to observe the UV with sufficient spectral resolution and flux-gathering power. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. We need to look at the low resolution data to decide which of the high resolution observations are possible. We must make low resolution observations at L alpha at the absorption redshifts to determine whether there is enough light for the high resolution observations. The SV prerequisite programs for all FOS observations in this program are: Prop ID 2195 FOS Target Acquisition Tests All observations Prop ID 1317 Int./Ext. Wavelength Offsets 1st target Prop ID 1318 Spectral Flat Fields 1st target Prop ID 1320 Absolute Spectrophotometry 1st visit of bright targets ------------------------------------------------------------------------------------ 8. Additional comments or special requests. We will try to schedule near simultaneous ground based observations if we are given enough lead time. ------------------------------------------------------------------------------------ 12. Our experience with high z quasars at the Lyman limit suggests that we will only be able to make half the high resolution observations. This is reflected in the requested observing time. Because of the statistical nature of this program, it should not be considered viable until 75% of the observations have been done. No data should be released until a year from this date. ------------------------------------------------------------------------------------ 13. FOS spectra will be obtained of 5 quasars with z > 3.1 to examine HeI and HeII in absorption and/or emission and perform the Gunn-Peterson test for smooth intergalactic helium. ------------------------------------------------------------------------------------ 11. Address Information Page 3 Name: E. MARGARET BURBIDGE Category: PI Institution: UNIVERSITY OF CALIFORNIA, SAN DIE Address: CASS DEPT., C-011 City: LA JOLLA State: CA Zip Code: 92093 Country: USA Telephone: (619) 452-4477 Telex (or e-mail): RAPIFAX: 3-5369 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1027c [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial |Acqui|FLX| Flux data No | Name | Description | Position |Eqnx | Vel. |Prblm|REF| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 1 S50014+81 HIGH REDSHIFT QUASAR RA = 00H 17M 8.563S +/- 2000 Z=3.41 1 V=16.5 +/- 1.0 0.3", DEC = 81D 35' 8.90" +/- 0.3", PLATE-ID = 00LO ------------------------------------------------------------------------------------------------------------------------------------ 2 0143-015 HIGH REDSHIFT QUASAR RA = 1H 45M 51.189S +/- 2000 Z=3.14 1 V=17.5 +/- 1.0 UM366 0.3", DEC = -01D 20' 30.73" +/- 0.3", PLATE-ID = 00GZ ------------------------------------------------------------------------------------------------------------------------------------ 5 1442+101 HIGH REDSHIFT QUASAR RA = 14H 45M 16.467S +/- 2000 Z=3.53 1 V=17.8 +/- 1.0 OQ172 0.3", DEC = 9D 58' 36.12" +/- 0.3", PLATE-ID = 00J0 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1027c [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3.5 DEFINE # FOS/BL ACQ/ 4.3 MIRROR BRIGHT=700000 1 10S 1 # SEQ 3.5-3.51 NO HIGHZTA BINARY GAP Comments: THIS SEQUENCE WAS ADDED AFTER THE EXTENDED POINT-SPREAD FUNCTION BECAME APPARENT. IT PERFORMS EXPLORATORY OBSERVATIONS. ------------------------------------------------------------------------------------------------------------------------------------ 3.51 DEFINE # FOS/BL ACQ 4.3 MIRROR 1 10S 1 # HIGHZTA ------------------------------------------------------------------------------------------------------------------------------------ 3.52 DEFINE # FOS/BL ACCUM 4.3 G160L 1650 STEP- 1 50S # POS TARG 6,0 / HIGHZFI PATT=SINGLE 3.52,3.54 X SEQ 3.52-3.56 NO GAP Comments: OBS. LISTED IN REQ_1 ARE OFFSETS TO MEASURE SKY AND DARK. THE TELESCOPE SHOULD RETURN TO THE TARGET COORDS FOR LINE 3.53. THIS SEQ WAS ADDED TO PERFORM EXPLORATORY OBS. AFTER THE EXTENDED PT. SPREAD FN. WAS APPARENT ------------------------------------------------------------------------------------------------------------------------------------ 3.53 DEFINE # FOS/BL ACCUM 4.3 G160L 1650 STEP- 1 1200S 10 1 # HIGHZFI PATT=SINGLE X ------------------------------------------------------------------------------------------------------------------------------------ 3.54 DEFINE # FOS/BL ACCUM 4.3 G160L 1650 STEP- 1 50S # HIGHZFI PATT=SINGLE X ------------------------------------------------------------------------------------------------------------------------------------ 3.56 DEFINE # FOS/BL ACCUM 4.3 PRISM 3500 STEP- 1 600S 10 1 # HIGHZFI PATT=SINGLE X ------------------------------------------------------------------------------------------------------------------------------------ 7.9 USE S50014+81 X6.7 3 ONBOARD ACQ FOR HIGHZTA 8.0 SEQ 7.9-8.0 NO GAP CYCLE 0 / 7.9-8.0 ------------------------------------------------------------------------------------------------------------------------------------ 8 USE S50014+81 X .50 3 HIGHZFI X ------------------------------------------------------------------------------------------------------------------------------------ 9.9 USE 0143-015 X13 1 ONBOARD ACQ FOR HIGHZTA 10.0 SEQ 9.9-10.0 NO GAP CYCLE 0 / 9.9-10.0 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1027c [ 6] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 USE 0143-015 1 HIGHZFI X ------------------------------------------------------------------------------------------------------------------------------------ 13.9 USE 1442+101 X24.5 1 ONBOARD ACQ FOR HIGHZTA 14.0 SEQ 13.9-14.0 NO GAP CYCLE 0 / 13.9- 14.0 ------------------------------------------------------------------------------------------------------------------------------------ 14 USE 1442+101 1 HIGHZFI X ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1027c [ 7] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/BL ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY ACQ ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BRIGHT=700000 STEP-PATT=SINGLE ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/FOS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 10.27 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 3.5-3.51 NO GAP POS TARG 6,0 / 3.52,3.54; SEQ 3.52-3.56 NO GAP ONBOARD ACQ FOR 8.0; SEQ 7.9-8.0 NO GAP; CYCLE 0 / 7.9-8.0 ONBOARD ACQ FOR 10.0; SEQ 9.9-10.0 NO GAP; CYCLE 0 / 9.9-10.0 ONBOARD ACQ FOR 14.0; SEQ 13.9-14.0 NO GAP; CYCLE 0 / 13.9-14.0 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G160L PRISM ------------------------------------------------------------------------------------------------------------------------------------ Target Names S50014+81 0143-015 UM366 1442+101 OQ172 ------------------------------------------------------------------------------------------------------------------------------------