Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4104c Report Date: 09-May-96:19:12 Version: ********** Check-in Date: ********** 1.Proposal Title: ULTRAVIOLET SPECTRAL ATLAS OF O STARS CYCLE 2 OBSERVATIONS (GTO AUGMENTATION) ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS AUG/HRS 1215 Sub Category HOT STARS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Sara R. Heap NASA, GODDARD SPACE FLIGHT C USA (301)286-5359 ------------------------------------------------------------------------------------ 7. Abstract The major goal of this program is to derive the most reliable spectroscopic parameters possible for O-type stars, based on comparisons with non-LTE calculations of model atmospheres. ------------------------------------------------------------------------------------ 8. Scientific Key Words: STELLAR WINDS, EXTENDED ATMOSPHERES ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 3.12 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4104c PI: Sara R. Heap Proposal Title: ULTRAVIOLET SPECTRAL ATLAS OF O STARS CYCLE 2 OBSERVATIONS (GTO AUGMENTATION) ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Sara R. Heap NASA, GODDARD SPACE FLIGHT USA CENTER Thierry Lanz NASA, GODDARD SPACE FLIGHT USA CENTER Ivan Hubeny UNIVERSITY SPACE RESEARCH USA ASSOCIATION (USRA) What_a_great Ghrs-Team GODDARD SPACE FLIGHT CENTER USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. We will obtain UV spectra of relatively bright, sharp-line O stars with the GHRS/G160M grating. We will then make a detailed comparison with line-blanketed non-LTE model spectra. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The ST/GHRS is needed to obtain UV spectra at the required high S/N. ------------------------------------------------------------------------------------ 13. We will use the unprecedented high-dispersion and high S/N of the ST/HRS to explore the physical parameters of O-type stars and to evaluate non-LTE analysis techniques. ------------------------------------------------------------------------------------ 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 = 4104c [ 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 HD188001 A, 107, 905 RA=19H52M21.7S+/-1", 2000 1 V=6.25+/-0.1, E(B-V)=0.31 DEC=+18D40'19"+/-1" Comments: POSITION FROM YALE_BS ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4104c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 HD188001 HRS ACQ 2.0 MIRROR-A2 LOCATE=YES 1 1.8S 1 ONBOARD ACQ FOR 12 FAINT=790 CYCLE 2 SEARCH-SIZE=3 Comments: FAINT FROM TACOUNTS, TD1 FLUXES TEXP=(128 NMAPS +S-S^2)XSTEPT =(0 + 3X3) 2 =1.8S ------------------------------------------------------------------------------------------------------------------------------------ 12 HD188001 HRS ACQ/ 2.0 MIRROR-A2 1 20.4S ONBOARD ACQ FOR 20 PEAKUP -160 CYCLE 2 Comments: TEXP=102*STEPTIME =20.4S FOR LSA ------------------------------------------------------------------------------------------------------------------------------------ 20 HD188001 HRS ACCUM 0.25 G160M 1194 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ 100 HD188001 HRS WSCAN 0.25 G160M 1300- WAVE-STEP=27 1 1344.0S 1 CYCLE 2 1435 STEP-PATT=3 FP-SPLIT=TWO Comments: 2560S =5 X 4 X 64 X 2 = 5 SETTINGS, 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP-SPLITS ------------------------------------------------------------------------------------------------------------------------------------ 110 HD188001 HRS ACCUM 0.25 G200M 1640 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ 120 HD188001 HRS ACCUM 0.25 G200M 1640 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ 130 HD188001 HRS ACCUM 0.25 G160M 1640 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ 140 HD188001 HRS ACCUM 0.25 G200M 1720 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4104c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 150 HD188001 HRS ACCUM 0.25 G200M 1750 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ 160 HD188001 HRS ACCUM 0.25 G200M 1920 STEP-PATT=3 1 512.0S 1 CYCLE 2 FP-SPLIT=TWO Comments: 512S= 4 X 16.0 X 2 4 S-STEP BINS, 16.0 SEC PER BIN 2 FP- SPLITS ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4104c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP ACCUM WSCAN ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters LOCATE=YES FAINT=790 SEARCH-SIZE=3 STEP-PATT=3 FP-SPLIT=TWO WAVE-STEP=27 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for AUG/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 3.12 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category HOT STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 12; CYCLE 2 ONBOARD ACQ FOR 20-160; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-A2 G160M G200M ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD188001 ------------------------------------------------------------------------------------------------------------------------------------