Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4120c Report Date: 09-May-96:19:13 Version: ********** Check-in Date: ********** 1.Proposal Title: UV SPECTRA OF LOW-REDSHIFT-QSOS: CYCLE 3 AND LATER OBSERVATIONS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN GTO/FOS 1026 Sub Category GTO/FOS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone E. margaret Burbidge UNIVERSITY OF CALIFORNIA, SA USA 619-534-4477 ------------------------------------------------------------------------------------ 7. Abstract This proposal contains observations which will help to complete a number of FOS IDT scientific programs. These programs are not in direct conflict with approved GO or GTO programs, but explore wavelength or signal-to-noise regimes not covered by other programs, or else they concentrate on objects of special interest. These programs will lead to a better understanding of the structure and kinematics of the broad- line region by studies of very high signal-to-noise line profiles in low redshift QSOs. The same data will also provide measurements of weak lines which will lead to improved photoionization models. This data set will yield high quality absorption line data for studies of specific absorption line systems and an independent sample for studies of absorption line evolution. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 7.10 par: 0 10. Num targs pri: 5 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4120c PI: E. margaret Burbidge Proposal Title: UV SPECTRA OF LOW-REDSHIFT-QSOS: CYCLE 3 AND LATER OBSERVATIONS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Richard J. Harms APPLIED RESEARCH CORPORATION USA Richard G. Allen UNIVERSITY OF ARIZONA USA J. Roger P. Angel UNIVERSITY OF ARIZONA USA Frank Bartko UNAFFILIATED USA Edward Beaver UC, SAN DIEGO USA Ralph C. Bohlin SPACE TELESCOPE SCIENCE USA INSTITUTE Pi E. Margaret Burbidge UC, SAN DIEGO USA Aurthur F. Davidsen JOHNS HOPKINS UNIVERSITY USA Holland C. Ford SPACE TELESCOPE SCIENCE USA INSTITUTE George F. Hartig SPACE TELESCOPE SCIENCE USA INSTITUTE Bruce H. Margon UNIVERSITY OF WASHINGTON USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. NAB0205+02: After a binary search target acquisition with the red detector, the following exposures will be taken in RAPID mode: Red G270H 1230s, Red G190H 3300s. The 1.0" aperture will be used. PG 2302+029: After a binary search target acquisition with the red detector, the following exposure will be taken in RAPID mode: Red G270H 3300s. The 1.0" aperture will be used. 1E0302+029: After a binary search target acquisition with the red detector, a 7 point peak up will be done to center the object in the 0.25X2.0 slit. Then the following exposure will be taken in rapid mode: Red G270H 3700s. The 0.25X2.0 slit will be used. PKS0454- 220: A 1200s WFC exposures with whatever broad band filter is available with WFC II. 3C 286: A 1200s PC exposures with one of the red filters available with WFC II. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The HST UV capability is needed to measure Lyman-alpha and C IV lambda1549 and other lines in low redshift QSOs. By combining HST and optical spectra, it is possible to study line pairs such as Lyman-alpha and H-alpha with accurate wavelengths, good sampling of broad lines and good signal to noise. HST and optical spectra are needed to measure accurate emission line intensities for weak lines over a large range of rest wavelengths in individual objects. Emission line velocity differences cannot be easily determined from IUE data combined with ground based data because the IUE wavelength calibration is uncertain. QSO emission line profile studies using IR data or IUE data are limited by the available low signal to noise. The evolution of C IV lambda1549 absorption systems and the Lyman-alpha forest at redshifts from 0.0 to 1.06 and 1.63 respectively can only be studied from space. 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. Page 3 ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. These observations will be reduced using the standard spectroscopy reduction software available for FOS data. Calibration will be done using the results of SV observations. The emission lines in the spectra of QSOs will be analyzed by using IRAF / STSDAS and other existing software to measure line strengths. Blended lines and the continuum will be subtracted from the strong broad emission lines to determine line profiles which will be compared to emission lines observed in the optical and to the predictions of kinematical models. The line strengths will be compared to results from photoionization models. Additional analysis will be done by dividing broad line profiles to obtain line ratios as a function of velocity (Shuder 1982). 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 evolution of C IV lambda1549 absorption systems with redshift will be studied by counting these systems and carrying out the necessary statistical analysis. Unidentified lines below Ly-alpha emission are candidate Ly-alpha forest lines and will contribute to studies of the evolution of these absorbers. Metal line systems will be studied by using curves of growth to obtain estimates and limits to column densities. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. Optical spectroscopy and photometry will be performed using the facilities of Lick Observatory. We will try to make the optical observations simultaneous with the HST UV observations if possible. ------------------------------------------------------------------------------------ 9. Description of previous HST work. Collaborators have 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'', 1027 - ``UV Spectra of QSOs with z$> 3.1$'', 1029 - ``Spectropolarimetry of QSOs, Blazars, and AGN'', and 1033 - ``Search for Misdirected BL Lac Objects''. Low resolution observations of three high redshift QSOs have not revealed any with light at He II lambda 304. 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 narrower than H-alpha. ``HST Imaging of the Inner 3 Arcseconds of NGC 1068 in the Light of [O III] lambda5007'', I.N.Evans, H.C.Ford, A.L.Kinney, R.R.J.Antonucci, L.Armus, and S.Caganoff, {\it Ap.J.(Lett.)}, {\bf 369}, L27, 1991. ``Faint Object Camera Observations of a Globular Cluster Nova Field'', B.Margon, S.F.Anderson, R.A.Downes, R.C.Bohlin, and P.Jakobsen, {\it Ap.J.(Lett.)}, {\bf 369}, L71, 1991. ``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. ``The Ultraviolet Absorption Spectrum of 3C 273'', J.N.Bahcall, B.T.Jannuzi, D.P.Schneider, G.F.Hartig, R.Bohlin, and V.Junkkarinen, {\it Ap.J.(Lett.)}, {\bf 377}, L5, 1991. ``Faint Object Spectrograph Spectroscopy of Resolved Structure in the Nucleus of NGC 1068'', S.Caganoff, R.R.J.Antonucci, H.C.Ford, G.A.Kriss, G.Hartig, L.Armus, I.N.Evans, E.Rosenblatt, R.C.Bohlin, and A.L.Kinney, {\it Ap.J.(Lett.)}, {\bf 377}, L9, 1991. ``Faint Object Spectrograph Observations of the Low-Luminosity Seyfert Galaxy NGC 1566'', G.A.Kriss, G.F.Hartig, L.Armus, W.P.Blair, S.Caganoff, and L.Dressel, {\it Ap.J.(Lett.)}, {\bf 377}, L13, 1991. Page 4 ------------------------------------------------------------------------------------ 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 FOS 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 and the University of Arizona. ------------------------------------------------------------------------------------ 11. Address Information Name: E. MARGARET BURBIDGE 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: 619-534-4477 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4120c [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 2 NAB0205+02 E,313,321,923, RA = 2H 7M 49.848S +/- 0.3", 2000 Z=0.155 1 V=15.4 +/- 0.5 GSC-I 40 162 H,515,519 DEC = 2D 42' 55.32" +/- 2 F(1900)=1.0 +/- 0.2 E-14 MRK586 0.3", PLATE-ID = 0086 ------------------------------------------------------------------------------------------------------------------------------------ 4 PKS0454-22 E,314,321, RA = 4H 56M 8.903S +/- 0.3", 2000 Z=0.534 1 V=16.1 +/- 0.5 H,515,516 DEC = -21D 59' 9.38" +/- 0.3", PLATE-ID = 029V ------------------------------------------------------------------------------------------------------------------------------------ 12 PG2302+029 E,313,321,923, RA = 23H 4M 44.956S +/- 2000 Z=1.044 1 V=16.0 +/- 1.0 H,515,519 0.3", 2 F(2430)=1.75 +/- 0.3 E-15 DEC = 3D 11' 46.42" +/- 0.3", PLATE-ID = 02JH ------------------------------------------------------------------------------------------------------------------------------------ 18 1E0302-223 E,313, RA = 03H 04M 49.823S +/- 2000 Z=1.40 1 V=16.3 +/- 0.5 H,515,519 0.3", 2 F(2380) = 2.0 +/- 0.2 E-15 DEC = -22D 11' 51.91" +/- 0.3", PLATE-ID = 025C ------------------------------------------------------------------------------------------------------------------------------------ 20 3C286 E,314,321, RA=13H 31M 8.293S +/- 0.3", 2000 Z=0.849 1 V=17.25+/-1.0 H,515,516 DEC=30D 30' 32.86" +/- 0.3", PLATE-ID = 009L Comments: THIS OBSERVATION HAS BEEN SWAPPED FROM ANOTHER FOS IDT GTO PROGRAM, NUMBER 1032. THE REST OF THAT PROGRAM IS BEING WITHDRAWN.THE PI WAS H. FORD, AND IS NOW E. M. BURBIDGE. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4120c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 2.5 NAB0205+02 FOS/RD ACQ/ 4.3 MIRROR BRIGHT=700000 1 7.5S 1 1 ONBOARD ACQ FOR BINARY 2.59-2.9 SEQ 2.5-2.9 NO GAP CYCLE 3 / 2.5-2.9 ------------------------------------------------------------------------------------------------------------------------------------ 2.59 NAB0205+02 FOS/RD RAPID 1.0 G270H 2700 READ-TIME=40 1 1230S 30 2 1 ------------------------------------------------------------------------------------------------------------------------------------ 2.9 NAB0205+02 FOS/RD RAPID 1.0 G190H 1900 READ-TIME=40 1 3300S 30 2 1 ------------------------------------------------------------------------------------------------------------------------------------ 6.5 PG2302+029 FOS/RD ACQ/ 4.3 MIRROR BRIGHT=700000 1 7.5S 1 1 ONBOARD ACQ FOR BINARY 6.59 SEQ 6.5-6.59 NO GAP CYCLE 3 / 6.5-6.59 ------------------------------------------------------------------------------------------------------------------------------------ 6.59 PG2302+029 FOS/RD RAPID 1.0 G270H 2700 READ-TIME=40 1 3300S 30 2 1 ------------------------------------------------------------------------------------------------------------------------------------ 15 PKS0454-22 WFC IMAGE ANY F128LP 1 1200S 1 1 CYCLE 9 /15 Comments: EXACT FILTER CHOICE WILL DEPEND ON WHAT IS AVAILABLE WITH THE REPLACEMENT WF/PC ------------------------------------------------------------------------------------------------------------------------------------ 41 1E0302-223 FOS/RD ACQ/ 4.3 MIRROR BRIGHT=700000 1 11S 1 1 ONBOARD ACQ FOR 42 BINARY CYCLE 3 /41-43 ------------------------------------------------------------------------------------------------------------------------------------ 42 1E0302-223 FOS/RD ACQ/ 4.3 MIRROR TYPE=UP 1 22S 1 1 ONBOARD ACQ FOR PEAK 43.0 SPATIAL SCAN ------------------------------------------------------------------------------------------------------------------------------------ 43 1E0302-223 FOS/RD RAPID 0.25X2. G270H 2700 READ-TIME=40 1 3700S 30 2 1 0 ------------------------------------------------------------------------------------------------------------------------------------ 50 3C286 PC IMAGE ALL F850LP 1 1200S 1 1 CYCLE 9 / 50 Comments: THIS OBS. WAS TAKEN FROM FOS IDT GTO PGM. NUMBER 1032. THE REST OF THAT PGM IS BEING WITHDRAWN.THE PI WAS H. FORD, AND IS NOW E. M. BURBIDGE.EXACT FILTER CHOICE WILL DEPEND ON WHAT IS AVAILABLE WITH THE REPLACEMENT WF/PC ------------------------------------------------------------------------------------------------------------------------------------ Scan Paramters Form Proposal ID: 4120c [ 7] ------------------------------------------------------------------------------------------------------------------------------------ Data ID: 1 Exposure Logsheet lines: 42.0 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 4120c [ 8] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/RD WFC PC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY RAPID IMAGE ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BRIGHT READ-TIME=40 TYPE=UP ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/FOS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 7.10 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category GTO/FOS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 2.59-2.9; SEQ 2.5-2.9 NO GAP; CYCLE 3 / 2.5-2.9 ONBOARD ACQ FOR 6.59; SEQ 6.5-6.59 NO GAP; CYCLE 3 / 6.5-6.59 CYCLE 9 /15 ONBOARD ACQ FOR 42; CYCLE 3 /41-43 ONBOARD ACQ FOR 43.0; SPATIAL SCAN CYCLE 9 / 50 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G270H G190H F128LP F850LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names NAB0205+02 GSC-I 40 162 MRK586 PKS0454-22 PG2302+029 1E0302-223 3C286 ------------------------------------------------------------------------------------------------------------------------------------