Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1150c Report Date: 09-May-96:16:14 Version: ********** Check-in Date: ********** 1.Proposal Title: STELLAR WINDS IN M31, M33 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS GTO/HRS Sub Category HOT STARS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Prof. John B. Hutchings DOMINION ASTROPHYSICAL OBSER CANADA (604) 388-3909 PROFESSOR ------------------------------------------------------------------------------------ 7. Abstract We will obtain UV spectra of OB supergiant stars in M33 AND M31 to study stellar wind phenomena (resonance line profiles and velocities, stellar effective temperatures). We will also derive approximate UV extinction curves for these galaxies. These observations relate to global comparisons between galaxies of different types. WFC UV grating images are requested in parallel to study the OB star population and extinction in these galaxies. ------------------------------------------------------------------------------------ 8. Scientific Key Words: HOT STARS, MASS-LOSS, STELLAR WINDS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 2.00 par: 0 10. Num targs pri: 8 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1150c PI: Prof. John B. Hutchings Proposal Title: STELLAR WINDS IN M31, M33 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ P. Massey NOAO, KITT PEAK NATIONAL USA OBSERVATORY John B. Hutchings DOMINION ASTROPHYSICAL CANADA OBSERVATORY ------------------------------------------------------------------------------------ 3. Description of proposed observations. FOS UV spectra will be taken in the range Lambda-Lambda 1100-3000, to derive line profiles and flux distributions, of several selected OB stars. The stars are selected on the basis of ground-based spectroscopy and in some cases, low dispersion IUE spectra. Parallel WFC images with the UV grating G200L are requested in all fields. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Only HST can obtain UV spectra with the desired resolution and S/N. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. Spectra will be analysed using DAO and KPNO facilities. Stellar effective temperatures, fluxes and extinction will be estimated by comparison with model atmospheres, line profiles and velocities will be compared with galactic and MC counterparts. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. Targets and/or positions may be updated if ground-based research progress warrants it. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). All resources supplied by DAO and KPNO. ------------------------------------------------------------------------------------ 13. Comparative stellar wind studies will be made between M31 and m33 OB stars. Obsevations are UV spectra of 2-3 stars from each galaxy, selected from ground- based spectroscopy. ------------------------------------------------------------------------------------ 11. Address Information Name: JOHN B. HUTCHINGS Category: PI Institution: DOMINION ASTROPHYSICAL OBSERVATOR Address: 5071 W. SAANICH RD. V8X 4M6 City: VICTORIA State: BC Zip Code: Country: CANADA Telephone: (604) 363-0018 Telex (or e-mail): 049-7295 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1150c [ 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 OB48/527 OB STAR IN M31 RA=0H 42M 32.595S+/-1", 1950 DEC=41D 22' 58.32"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1150c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 OB48/527 FOS/BL ACQ/ 4.3 MIRROR 1 60S 1 ONBOARD ACQ FOR 2- BINARY 4 CYCLE 1 /1-4 ------------------------------------------------------------------------------------------------------------------------------------ 2 ^ ^ ACCUM 1.0 G130H 1150- 1 3200S 1 UNPROTECTED 1608 ------------------------------------------------------------------------------------------------------------------------------------ 3 ^ ^ ^ ^ G190H 1595- ^ 1200S ^ UNPROTECTED 2282 ------------------------------------------------------------------------------------------------------------------------------------ 4 ^ ^ ^ ^ G270H 2227- ^ 350S ^ UNPROTECTED 3306 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1150c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/BL ^ ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY ACCUM ^ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 2.00 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category HOT STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 2-4; CYCLE 1 /1-4 UNPROTECTED ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G130H G190H G270H ------------------------------------------------------------------------------------------------------------------------------------ Target Names OB48/527 ------------------------------------------------------------------------------------------------------------------------------------