Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 3279c Report Date: 09-May-96:18:20 Version: ********** Check-in Date: ********** 1.Proposal Title: SPECTROPOLARIMETRY OF MAGNETIC WHITE DWARFS: FUTURE-CYCLE CONTINUATION ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS GTO/FOS 1049 Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Prof. J. roger P Angel UNIVERSITY OF ARIZONA USA 602-621-6541 PROF. OF ASTRONOMY ------------------------------------------------------------------------------------ 7. Abstract Spectropolarimetry and spectrophotometry will be used to study the ultraviolet Zeeman spectra of magnetic white dwarfs with fields in excess of 20 MG. ------------------------------------------------------------------------------------ 8. Scientific Key Words: WHITE DWARFS, HIGH MAGNETIC FIELDS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 10.70 par: 0 10. Num targs pri: 5 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS WF/PC ------------------------------------------------------------------------------------ 12. Special sched req: Time Critical obs. ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 3279c PI: Prof. J. roger P Angel Proposal Title: SPECTROPOLARIMETRY OF MAGNETIC WHITE DWARFS: FUTURE-CYCLE CONTINUATION ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Dr. Edward Beaver UC, SAN DIEGO USA Dr. E. Margaret Burbidge UC, SAN DIEGO USA Dr. Bruce Margon UNIVERSITY OF WASHINGTON USA Dr. J. Roger P Angel UNIVERSITY OF ARIZONA USA Dr. Holland C Ford JOHNS HOPKINS UNIVERSITY USA Dr. Frank Bartko MARTIN MARIETTA CORPORATION USA Dr. Arthur F Davidsen JOHNS HOPKINS UNIVERSITY USA Dr. Richard J Harms APPLIED RESEARCH CORPORATION USA Dr. Ralph Bohlin SPACE TELESCOPE SCIENCE USA INSTITUTE ------------------------------------------------------------------------------------ 3. Description of proposed observations. Three magnetic white dwarfs will be observed with the FOS spectropolarimeter. A fourth star with a very short period will be observed spectroscopically. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. All observations below 3000A. All objects have been well observed to limits of ground-based telescopes and IUE. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. Two of the four are variables, and need coverage over their rotation periods. 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 Prop ID 1430 Polarimetric Calibration All observations ------------------------------------------------------------------------------------ 13. Ultraviolet spectropolarimetry and spectrophotometry of magnetic white dwarfs, to study effects of strong fields on continuum and lines, particularly Lalpha. Four objects will be observed, Grw +70degrees8247, GD 229, PG 1031+23 and Feige 7. ------------------------------------------------------------------------------------ 11. Address Information Name: RICHARD ALLEN Category: CON Institution: STEWARD OBSERVATORY Address: City: TUCSON State: AZ Zip Code: 85721 Country: USA Telephone: 602-621-7661 Telex (or e-mail): 467175 ------------------------------------------------------------------------------------ Name: J. ROGER P ANGEL Category: PI Institution: STEWARD OBSERVATORY Address: UNIVERSITY OF ARIZONA City: TUCSON State: AZ Zip Code: 85721 Country: USA Telephone: 602-621-6541 Telex (or e-mail): 467175 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 3279c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 2 PG1031+23 MAGNETIC WHITE DWARF TBD-EARLY, 2000 1 V=14.50 +/- 0.3 RA=10H 33M 49.27S +/- 1", DEC=23D 09' 16.2" +/- 1", PLATE-ID=0259 ------------------------------------------------------------------------------------------------------------------------------------ 3 PG1031+23- ACQUISITION FIELD RA=10H 33M 49.27S +/- 1", 2000 FIELD DEC=23D 09' 16.2" +/- 1", PLATE-ID=0259 ------------------------------------------------------------------------------------------------------------------------------------ 4 GD229 MAGNETIC WHITE DWARF RA=20H 12M 22.24S +/- 1", 2000 1 V=14.85 +/- 0.3 DEC=31D 13' 47.3" +/- 1", PLATE-ID=02UC Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) J 1984.50 0.0021 +/- 0.0001 0.0970 +/- 0.0020 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ 5 FEIGE7 MAGNETIC WHITE DWARF RA=00H 43M 46.09S +/- 1", 2000 1 V=15.20 +/- 0.3 DEC=-10D 00' 22.9" +/- 1", PLATE-ID=00CV Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) J 1982.90 -0.0097 +/- 0.0004 -0.1130 +/- 0.0060 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3279c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 6 PG1031+23- WFC IMAGE ALL F439W 4353 1 15S 2 CYCLE 2 / 6-8 FIELD EARLY ACQ FOR 7-8 ------------------------------------------------------------------------------------------------------------------------------------ 7 PG1031+23 FOS/BL ACQ/ 4.3 MIRROR BRIGHT=720000 1 5.5S 2 SEQ 7-8 NO GAP BINARY ONBOARD ACQ FOR 8 REQ DATA FROM 6 ------------------------------------------------------------------------------------------------------------------------------------ 8 PG1031+23 FOS/BL ACCUM 4.3 G130H 1150- POLSCAN=8B 11 1280S 2 1608 ------------------------------------------------------------------------------------------------------------------------------------ 10 GD229 FOS/BL ACQ/ 4.3 MIRROR BRIGHT=720000 1 5.5S 2 CYCLE 2 / 10-14 BINARY SEQ 10-14 NO GAP ONBOARD ACQ FOR 11 -14 ------------------------------------------------------------------------------------------------------------------------------------ 11 GD229 FOS/BL ACCUM 4.3 G190H 1900 1 300S 2 ------------------------------------------------------------------------------------------------------------------------------------ 12 GD229 FOS/BL ACCUM 4.3 G130H 1150- 1 1200S 2 1608 ------------------------------------------------------------------------------------------------------------------------------------ 14 GD229 FOS/BL ACCUM 4.3 G270H 2227- POLSCAN=8B 2 1440S 2 3306 ------------------------------------------------------------------------------------------------------------------------------------ 15 FEIGE7 FOS/BL ACQ/ 4.3 MIRROR BRIGHT=720000 1 5.5S 2 CYCLE 2 / 15-16 BINARY SEQ 15-16 NO GAP ONBOARD ACQ FOR 16 ------------------------------------------------------------------------------------------------------------------------------------ 16 FEIGE7 FOS/BL ACCUM 4.3 G130H 1150- 4 1800S 2 1608 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 3279c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC FOS/BL ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ACQ/BINARY ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BRIGHT=720000 POLSCAN=8B ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/FOS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 10.70 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 2 / 6-8; EARLY ACQ FOR 7-8 SEQ 7-8 NO GAP; ONBOARD ACQ FOR 8; REQ DATA FROM 6 CYCLE 2 / 10-14; SEQ 10-14 NO GAP; ONBOARD ACQ FOR 11-14 CYCLE 2 / 15-16; SEQ 15-16 NO GAP; ONBOARD ACQ FOR 16 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F439W MIRROR G130H G190H G270H ------------------------------------------------------------------------------------------------------------------------------------ Target Names PG1031+23 PG1031+23-FIELD GD229 FEIGE7 ------------------------------------------------------------------------------------------------------------------------------------