Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1211c Report Date: 09-May-96:16:19 Version: ********** Check-in Date: ********** 1.Proposal Title: EXTENDED ATMOSPHERES OF EARLY-TYPE STARS: CYCLE 2 OBSERVATIONS (GTO BASELINE) ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS GTO/HRS 1211 Sub Category HOT STARS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Sara R. Heap NASA, GODDARD SPACE FLIGHT C USA (301)286-9545 ------------------------------------------------------------------------------------ 7. Abstract We will monitor one star, XI Per (HD24912), in order to detect and track absorption components (DAC's) in its wind. ------------------------------------------------------------------------------------ 8. Scientific Key Words: STELLAR WINDS, EXTENDED ATMOSPHERES ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 5.50 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1211c PI: Sara R. Heap Proposal Title: EXTENDED ATMOSPHERES OF EARLY-TYPE STARS: CYCLE 2 OBSERVATIONS (GTO BASELINE) ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Sara R. Heap NASA, GODDARD SPACE FLIGHT USA CENTER Bruce Altner APPLIED RESEARCH CORP. USA Alex Fullerton BARTOL INST., UNIV. OF DELAWARE USA Huib Heinrichs UNIVERSITY OF AMSTERDAM HOLLAND Owocki Stan BARTOL INST. USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. This program has been pared down to an investigation of the wind of Xi Per (HD 24912). It seeks to detect and identify the important physical processes involved in the initation of a wind and in the accelerated flow -- e.g. the relation between processes operating in the photosphere (e.g. non-radial pulsations, micro - turbulence, etc.) and the properties of the wind. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The ST/GHRS is necessary to obtain profiles of wind lines at high S/N and high time resolution. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. The monitoring of HD 24912 should be scheduled in the same week that Lambda Cep is being observed, so as to coordinate ground-based supporting observations. It was requested to observe Lam Cep in Sep or Oct. 1992 (as part of 1211P augmentation). ------------------------------------------------------------------------------------ 13. I propose to use the unprecedented high-dispersion, high S/N, and high time- resolution of the ST/HRS to explore the winds of early-type stars. ------------------------------------------------------------------------------------ 11. Address Information Name: SARA R. HEAP Category: PI Institution: GODDARD SPACE FLIGHT CENTER Address: CODE 681 City: GREENBELT State: MD Zip Code: 20771 Country: USA Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1211c [ 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 HD24912 XI- A, 104, 905 RA=3H 58M 57.8S+/-0.2", 2000 1 V=4.04+/-0.1,B-V=+0.01,U-B=-0.92 PER DEC=+35 D47' 28.0"+/-0.2" Comments: BRIGHT O STAR WITH DAC'S IN WIND POSITION FROM YALE BS 4.0 CATALOG ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1211c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 100 HD24912 HRS ACQ 2.0 MIRROR-A2 LOCATE=YES 1 1.8S 1 ONBOARD ACQ FOR FAINT=4000 101.0 SEARCH-SIZE=3 SEQ 100-122 NO GAP AT 09-SEP-92 +/- 2D CYCLE 2 Comments: TEXP=(128NMAP+SCH-SZ^2)XSTEP- TIME =( 0 + 3X3) X 0.2 = 1.8S ------------------------------------------------------------------------------------------------------------------------------------ 101 HD24912 HRS ACQ/ 2.0 MIRROR-A2 1 20.4S 1 ONBOARD ACQ FOR PEAKUP 110-122 CYCLE 2 Comments: CENTER IN LSA AFTER NEW DEFCAL TEXP=102 X STEP-TIME= 20.4S FOR LSA ------------------------------------------------------------------------------------------------------------------------------------ 110 WAVE HRS ACCUM SC2 G160M 1392 1 20S 1 CALIB FOR 120 SEQ 110-122 NO GAP CYCLE 2 Comments: WAVELENGTH CALIBRATION ------------------------------------------------------------------------------------------------------------------------------------ 120 HD24912 HRS RAPID 0.25 G160M 1392 SAMPLE- 1 30.0M 1 CYCLE 2 TIME=12.0 Comments: PUT IN A SPYBAL HERE ------------------------------------------------------------------------------------------------------------------------------------ 121 HD24912 HRS RAPID 0.25 G160M 1392 SAMPLE- 1 30.0M 1 CYCLE 2 TIME=12.0 Comments: PUT IN A SPYBAL HERE ------------------------------------------------------------------------------------------------------------------------------------ 122 HD24912 HRS RAPID 0.25 G160M 1392 SAMPLE- 1 30.0M 1 CYCLE 2 TIME=12.0 Comments: PUT IN A SPYBAL HERE ------------------------------------------------------------------------------------------------------------------------------------ 200 HD24912 HRS ACQ 2.0 MIRROR-A2 LOCATE=YES 1 1.8S 1 ONBOARD ACQ FOR FAINT=4000 201.0 SEARCH-SIZE=3 SEQ 200-222 NO GAP AT 09-SEP-92 +/- 2D AFTER 122 BY 14H + /- 2H CYCLE 2 ------------------------------------------------------------------------------------------------------------------------------------ 201 HD24912 HRS ACQ/ 2.0 MIRROR-A2 1 20.4S 1 ONBOARD ACQ FOR PEAKUP 210-222 CYCLE 2 Comments: CENTER IN LSA AFTER NEW DEFCAL TEXP=102 X STEP-TIME= 20.4S FOR LSA ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1211c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 210 WAVE HRS ACCUM SC2 G160M 1392 1 20S 1 CALIB FOR 220 SEQ 110-122 NO GAP CYCLE 2 Comments: WAVELENGTH CALIBRATION ------------------------------------------------------------------------------------------------------------------------------------ 220 HD24912 HRS RAPID 0.25 G160M 1392 SAMPLE- 1 30.0M 1 CYCLE 2 TIME=12.0 Comments: PUT IN A SPYBAL HERE ------------------------------------------------------------------------------------------------------------------------------------ 221 HD24912 HRS RAPID 0.25 G160M 1392 SAMPLE- 1 30.0M 1 CYCLE 2 TIME=12.0 Comments: PUT IN A SPYBAL HERE ------------------------------------------------------------------------------------------------------------------------------------ 222 HD24912 HRS RAPID 0.25 G160M 1392 SAMPLE- 1 30.0M 1 CYCLE 2 TIME=12.0 Comments: PUT IN A SPYBAL HERE ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1211c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP ACCUM RAPID ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters LOCATE=YES FAINT=4000 SEARCH-SIZE=3 SAMPLE-TIME=12.0 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 5.50 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category HOT STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 101.0; SEQ 100-122 NO GAP; AT 09-SEP-92 +/- 2D; CYCLE 2 ONBOARD ACQ FOR 110-122; CALIB FOR 120; SEQ 110-122 NO GAP; ONBOARD ACQ FOR 201.0; SEQ 200-222 NO GAP; AFTER 122 BY 14H +/- 2H; ONBOARD ACQ FOR 210-222; CYCLE 2; CALIB FOR 220; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-A2 G160M ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD24912 XI-PER ------------------------------------------------------------------------------------------------------------------------------------