Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 2638c Report Date: 09-May-96:17:16 Version: ********** Check-in Date: ********** 1.Proposal Title: THE NEAR ULTRAVIOLET SPECTRUM OF 0215+015 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN GO 1 Long Term yrs Sub Category Target of Oppt. QUASAR ABSORPTION ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. J. chris Blades SPACE TELESCOPE SCIENCE INST USA 301-338-4805 ASTRONOMER ------------------------------------------------------------------------------------ 7. Abstract The radio source 0215+015 is a remarkable QSO. Originally classified as a featureless BL Lac object, weak emission lines at Z(em) = 1.72 have been detected recently. The object has a complex absorption spectrum with seven redshifts identified from our optical spectra. The source shows large (around 5 mag) optical variations, and when bright (14-16mag) can be studied at high resolution, making it a unique and important object for absorption line studies. Our proposal seeks Target-of-Opportunity (ToO) time to study the region 2200-3200A, during the next bright period. Our aim is to study absorption lines belonging to the three most complex redshift systems. We shall use the GHRS at R=27,500 for a detailed study of the Ly-alpha region z = 1.345 and the Ly-beta - O VI regions at z = 1.549 and 1.649. ------------------------------------------------------------------------------------ 8. Scientific Key Words: ABUNDANCES, COSMOLOGY, BL LAC OBJECT: LINE IDENTS, UV: SPECTRA ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 8.00 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 2638c PI: Dr. J. chris Blades Proposal Title: THE NEAR ULTRAVIOLET SPECTRUM OF 0215+015 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Prof. Richard W Hunstead UNIVERSITY OF SYDNEY AUSTRALIA Dr Max Pettini AAO AUSTRALIA X Dr J. Chris Blades SPACE TELESCOPE SCIENCE USA INSTITUTE ------------------------------------------------------------------------------------ 2. Scientific Justification. The radio source 0215+015 is one of the more remarkable QSOs that have been detected, exhibiting an astonishingly rich and complex absorption spectrum. Proposed HST Observations: For V=15.5 or brighter we shall obtain high resolution spectra of selected spectral regions using the GHRS. An exposure of 8000 sec would provide a signal-to-noise of 20 and a detection limit of 25 mA near 2850 A at a resolution of 30 km/sec. We propose to obtain two sections of spectra that will cover the strong Ly-alpha line and important metal lines of the z=1.345 system. This will allow us to measure the damping wings of the Lyman line, thereby improving dramatically our HI column density for an abundance study. We shall get as a bonus, measurements of Si III 1206 and N I 1200 that will provide new information on the columns and level of ionization in the 1.345 system. In addition, we propose two further spectral regions, each centered on the Ly-beta - O VI region for the high-ionization systems at 1.549 and 1.649. Ly-beta observations will yield H I columns which otherwise are difficult to obtain because of the location of the Ly-alpha lines near 3100-3200 A. We shall be able to derive O VI column densities for the individual sub-components that make up the complex absorption. ------------------------------------------------------------------------------------ 11. Address Information Name: J. CHRIS BLADES Category: PI Institution: SPACE TELESCOPE SCIENCE INSTITUTE Address: 3700 SAN MARTIN DRIVE City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: 301-338-4805 Telex (or e-mail): 6849101 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 2638c [ 3] ------------------------------------------------------------------------------------------------------------------------------------ 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 0215+015 QSO RA= 02H 17M 48.951S +/- 2000 Z=1.7 1 V=15.5 0.3", DEC= +1D 44' 49.83" +/- 0.3", PLATE-ID= 023B Comments: TARG OF OPP, MAG=15.5 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2638c [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 0215+015 HRS ACQ 2.0 MIRROR-N2 SEARCH-SIZE=3 1 18S 5 1 1 ONBOARD ACQ FOR 2- FAINT=300 2S 4 DARK TIME TARG OF OPP / 1-4 CYCLE 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 0215+015 HRS ACCUM 2.0 G270M 2840 COMB=FOUR 10 1079S 20 1 1 CYCLE 1 FP-SPLIT=TWO 10790S STEP-PATT=DEF ------------------------------------------------------------------------------------------------------------------------------------ 3 0215+015 HRS ACCUM 2.0 G270M 2630 COMB=FOUR 8 1000S 20 1 1 CYCLE 1 FP-SPLIT=TWO 8000S STEP-PATT=DEF ------------------------------------------------------------------------------------------------------------------------------------ 4 0215+015 HRS ACCUM 2.0 G270M 2710 COMB=FOUR 8 1000S 20 1 1 CYCLE 1 FP-SPLIT=TWO 8000S STEP-PATT=DEF ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 2638c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SEARCH-SIZE=3 FAINT=300 COMB=FOUR FP-SPLIT=TWO STEP-PATT=DEF ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 8.00 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category QUASAR ABSORPTION ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 2-4; DARK TIME; TARG OF OPP / 1-4; CYCLE 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-N2 G270M ------------------------------------------------------------------------------------------------------------------------------------ Target Names 0215+015 ------------------------------------------------------------------------------------------------------------------------------------