Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4180c Report Date: 09-May-96:19:23 Version: ********** Check-in Date: ********** 1.Proposal Title: PHYSICAL CONDITIONS IN LOW Z ABSORPTION LINE SYSTEMS IN QSOS AUGMENTATION: CYCLE 3 OBSERVATIONS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN AUG/HRS 1191 Sub Category QUASAR ABSORPTION ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. Edward Beaver UC, SAN DIEGO USA (619) 534-1878 RESEARCH PHYSICIST ------------------------------------------------------------------------------------ 7. Abstract In PG 1630+377, we will use the HRS to measure lines of He I at 584A, and we will use the FOS to measure associated Ly-alpha and Ly-beta lines. The relative abundance of He I determined this way should yield clues to the conditions in the Lyman-alpha forest clouds and in the IGM at high redshift. ------------------------------------------------------------------------------------ 8. Scientific Key Words: QUASAR, SPECTROSCOPY, ABSORPTION LINES ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 3.91 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4180c PI: Dr. Edward Beaver Proposal Title: PHYSICAL CONDITIONS IN LOW Z ABSORPTION LINE SYSTEMS IN QSOS AUGMENTATION: CYCLE 3 OBSERVATIONS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Ross D. Cohen UC, SAN DIEGO USA Pi Edward A. Beaver UC, SAN DIEGO USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. Following a binary search target acquisition in the 4.3" aperture with the red detector, a peak-up will be used to center the object in the 0.25X2.0 slit. After this a 2960s RAPID mode observation with G270H and a 6899s RAPID mode observation with G190H will be made. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The collecting area of HST and the sensitivity of the FOS and GHRS make it possible to obtain spectra with the signal to noise needed to carry out these studies of QSOs at wavelengths below the atmospheric cutoff. These absorption lines cannot be measured in the optical. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. These observations will be reduced using the standard spectroscopy and polarimetry reduction software available for FOS data. Calibration will be done using the results of SV observations. The absorption features in QSO spectra will be measured using existing software that has been used for optical data and the early HST spectra. The He I systems will be studied by using curves of growth to obtain estimates and limits to column densities. ------------------------------------------------------------------------------------ 9. Description of previous HST work. PI has received data from a number of GTO programs, SAT, and ERO programs. Related programs which have had observations are as follows: 1026 - ``UV Spectra of Low-Redshift-QSOs'': related, 1027 - ``UV Spectra of QSOs with z> 3.1'': not related, 1190 - ``FUV Emission LIne Profiles of W Serpentis Binaries'': not related Observations of UM 675 have shown that any He I Gunn--Peterson effect is small, that He I absorption lines are not strong, that predictions of the ``Lyman valley'' may be correct, and that low redshift Ly-alpha is more prevalent than expected. Observations of low redshift QSOs (including 3C 273) have shown even more clearly that Ly-alpha absorption occurs in greater numbers than expected, as well as showing emission--line profile differences more clearly than from earlier data. Unexpectedly, Ly-alpha is {\it narrower} than H-alpha. ``Far--Ultraviolet Spectroscopy of the Quasar UM 675 with the Faint Object Spectrograph on the Hubble Space Telescope'', E.A.Beaver, E.M.Burbidge, R.D.Cohen, V.T.Junkkarinen, R.W.Lyons, E.I.Rosenblatt, G.F.Hartig, B.Margon, and A.F.Davidsen, {\it Ap.J.(Lett.)}, {\bf 377}, L1, 1991. ``First Results from the GHRS: UV Spectra of a Starburst Knot in NGCC 1068'', Hutchings, J.B., Bruhweiler, G.C., Boggess, A., Heap, S.R., Ebbets, D.C., Beaver, E., Rosenblatt, E., Truonmg, K.Q., Perez, M., and Westmacott, R., 1991, APJ (Letters), 377, 1991. Page 3 ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). The majority of the resources required for this project other than the normal facilities of a university (librarys, offices, etc.) were supplied by NASA to the members of the GHRS IDT for these projects. These include all the computing facilities required for the completion of data reduction and analysis. Optical and IR ground--based observing facilities and support are provided by the University of California. ------------------------------------------------------------------------------------ 11. Address Information Name: ROSS COHEN Category: CON Institution: UNIV. OF CALIF., SAN DIEGO Address: CASS 0111 UCSD 9500 Gilman Drive City: LA JOLLA State: CA Zip Code: 920930111 Country: USA Telephone: (619) 534-2664 Telex (or e-mail): 534-6316 (FAX) ------------------------------------------------------------------------------------ Name: EDWARD BEAVER Category: PI Institution: UNIVERSITY OF CALIFORNIA, SAN DIE Address: CASS 0111 UCSD 9500 Gilman Drive City: LA JOLLA State: CA Zip Code: 920930111 Country: USA Telephone: (619) 534-1878 Telex (or e-mail): 534-6316 (FAX) ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4180c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 5 PG1630+377 E,313,321, RA = 16H 32M 1.171S +/- 2000 Z=1.471 1 V = 15.96+/- 1.0 H,515,519 0.2", 2 F(1500) = 3.0 +/- 1.0 E-15 DEC = 37D 37' 48.69" +/- 3 F(1900) = 2.0 +/- 1.0 E-14 0.2", PLATE-ID = 01RW ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4180c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 42 PG1630+377 FOS/RD ACQ/ 4.3 MIRROR BRIGHT=700000 1 7.5S 1 1 ONBOARD ACQ FOR BINARY 42.1 SEQ 42.0-42.5 NO GAP CYCLE 3 / 42.0- 42.5 ------------------------------------------------------------------------------------------------------------------------------------ 42.1 PG1630+377 FOS/RD ACQ/ 0.25X2. MIRROR TYPE=UP 1 7.5S 1 1 ONBOARD ACQ FOR PEAK 0 42.45-42.5 SPATIAL SCAN ------------------------------------------------------------------------------------------------------------------------------------ 42.45 PG1630+377 FOS/RD RAPID 0.25X2. G270H 2700 READ-TIME=40 1 2960S 30 3 1 0 ------------------------------------------------------------------------------------------------------------------------------------ 42.5 PG1630+377 FOS/RD RAPID 0.25X2. G190H 1900 READ-TIME=40 1 6899S 30 3 1 0 ------------------------------------------------------------------------------------------------------------------------------------ Scan Paramters Form Proposal ID: 4180c [ 6] ------------------------------------------------------------------------------------------------------------------------------------ Data ID: 1 Exposure Logsheet lines: 42.1 FGS Scan: DWELL Dwell Only: dwell points/line: 7 Seconds per dwell: 0.00 Scan width (arc-secs): 0.0000 Scan length (arc-secs): 0.4000 Angle between sides (degrees) 0.00 Number of lines: 1 Scan rate (arc-sec/sec): 0.0000 PA of first scan line (degrees) 90.000 Scan frame (CEL or S/C): S/C Length Offset (arc-sec): 0.2000 Width Offset (arc-sec): ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4180c [ 7] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/RD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY ACQ/PEAK RAPID ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BRIGHT TYPE=UP READ-TIME=40 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for AUG/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 3.91 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category QUASAR ABSORPTION ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 42.1; SEQ 42.0-42.5 NO GAP; CYCLE 3 / 42.0-42.5 ONBOARD ACQ FOR 42.45-42.5; SPATIAL SCAN ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G270H G190H ------------------------------------------------------------------------------------------------------------------------------------ Target Names PG1630+377 ------------------------------------------------------------------------------------------------------------------------------------