Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 3212c Report Date: 09-May-96:18:11 Version: ********** Check-in Date: ********** 1.Proposal Title: WINDS AND CHROMOSPHERES OF COOL LUMINOUS STARS -- CYCLE 1 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS GTO/HRS 1195 Sub Category COOL STARS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Kenneth G. Carpenter NASA - GODDARD SPACE FLIGHT USA (301)-286-3453 ASTROPHYSICIST ------------------------------------------------------------------------------------ 7. Abstract The goals of this program are to determine the physical characteristics of the winds/chromospheres around cool luminous stars. GHRS observations of the C II (UV 1) 1335 A and (UV 0.01) 2325 A multiplets will be used along with observations of the C I lines near 1655 and 1994 A to constrain the temperatures and densities in model chromospheres. The C II (UV 0.01) lines will also be used to estimate the turbulence in these chromospheres. The (confusing) far UV spectrum of the M supergiants will be explored with the GHRS. GHRS observations of Fe II lines will be used to study the dependence of the wind velocity on radial distance above the photosphere. High quality Fe II and Mg II profiles will be acquired to search for discrete velocity features and the presence of circumstellar absorption within the profiles. The photospheric absorption-line spectrum (2579-2675 A) of Arcturus will be observed in the echelle mode. Medium resolution observations of Fe II and Mg II in the dusty, very luminous star Mu Cep will provide information on the effect of dust and very low gravity on the wind velocity field. *** this file contains the Cycle 1 observations only *** ------------------------------------------------------------------------------------ 8. Scientific Key Words: COOL STARS: WINDS, CHROMOSPHERES, MASS-LOSS. ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 3.76 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 3212c PI: Kenneth G. Carpenter Proposal Title: WINDS AND CHROMOSPHERES OF COOL LUMINOUS STARS -- CYCLE 1 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Kenneth G. Carpenter NASA - GODDARD SPACE FLIGHT USA CENTER Jeffrey L. Linsky COLORADO, UNIVERSITY OF USA Richard D. Robinson CSC - ASTRONOMY PROGRAM USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. Cycle 1 Target: GammaCru Grating Wavel. exposure time (min) (delete due to D1 loss: G140L 1224-1800 17.7 x 2 exp. LSA) G160M 1655 23.5 LSA replaces G140L G200M 1995 4.6 LSA replaces G140L G270M 1980-2215 10.0 X 5 exposures LSA G270M 2345 15.0 SSA G270M 2499 10.0 SSA G270M 2609 8.2 SSA G270M 2753 4.6 SSA G270M 2803 4.6 SSA ECH-B 2596# 30.0 SSA ECH-B 2799# 6.4 SSA Exposure times corrected for spherical aberration for this cycle 1 target. Obs. modified to account for loss of D1. Cycle: 1 Priority: 1 # = to be accompanied by wavelength calibration exposures Only Cycle 1 targets are in this file 1195.cycle1 ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. The data required for this program consists of UV spectra not obtainable from the ground. IUE has been used for a preliminary reconnaissance of all these targets, except for AlphaSco A (which has a hot companion that cannot be excluded from the larger IUE apertures). We now require the higher sensitivity, wavelength resolution, and S/N attainable with the HRS and ST to improve and extend our studies of the physical conditions characterising the outer atmospheres of these cool luminous stars. Only HRS is capable of providing us with the very high precision line profiles, fluxes, and absolute velocities required for our program. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. none ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. Wavelength calibration exposures for all the echelle observations are needed to provide us with a velocity scale accurate to about 1 km/sec. This accuracy is required to allow us to study the dependence of the wind flow velocities on distance above the photosphere of each star. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. The data will be reduced and analyzed primarily with in-house software developed for analysis of IUE data and with new software to be developed in-house. Software developed by the GHRS IDT and the proposers will be used in the reduction and analysis of these observations. The NLTE MULTI code will be used to construct model chromospheres and spectra which will be compared with the observations. References documenting the methods of analysis to be used in this investigation are given in the Scientific Justification section of this proposal. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). See section 7. Page 3 ------------------------------------------------------------------------------------ 12. The targets observed in this program are: 1. Alpha Ori 2. Alpha Sco A 3. Gamma Cru (this is the only Cycle 1 target) 4. Alpha Tau 5. Alpha Boo 6. Lambda Vel 7. Mu Cep ------------------------------------------------------------------------------------ 13. We plan UV spectroscopic observations with GHRS of a sample of 7 cool luminous stars. Our goals are to determine, from analysis of chromospheric emission lines, the physical conditions in their wind regions/chromospheres and to study the dependence of wind velocity on radial distance above the photosphere. The UV photospheric absorption line spectrum of Arcturus will also be studied at very high resolution. ------------------------------------------------------------------------------------ 11. Address Information Name: KENNETH G. CARPENTER Category: PI Institution: NASA - GODDARD SPACE FLIGHT CENTE Address: City: State: Zip Code: Country: Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ Name: RICHARD D. ROBINSON Category: Institution: CSC @ NASA-GODDARD SPACE FLIGHT C Address: CODE 681 City: GREENBELT State: MD Zip Code: 20771 Country: USA Telephone: (301)-286-4530 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: JEFFREY L. LINSKY Category: Institution: JILA - UNIVERSITY OF COLORADO Address: CAMPUS BOX 440 City: BOULDER State: CO Zip Code: 80309 Country: USA Telephone: (303)-492-7838 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 3212c [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 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 HD108903 M3 III RA=12H28M22.727S+/-0.1", 1950 V=+21 1 V=1.62+/-.2,TYPE=M3 III GAMMA-CRU DEC=-56D50'00.33"+/-0.1" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B 1950.00 0.0019 +/- 0.0001 -0.2670 +/- 0.0020 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3212c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 53 HD108903 HRS ACQ 2.0 MIRROR-A2 FAINT=50 1 40.0S 1 1 CYCLE 1 / 53-80 SEARCH-SIZE=5 ONBOARD ACQ FOR 53.250 SEQ 53.0-80 NO GAP Comments: EXPECT 180-391 CTS/1.6SEC POST- LAUNCH CAL. STEP-TIME=1.6 ------------------------------------------------------------------------------------------------------------------------------------ 53.25 ^ HRS ACQ/ 2.0 MIRROR-A2 1 73.6S 1 1 ONBOARD ACQ FOR PEAKUP 53.5-58 Comments: CENTER IN LSA AFTER NEW DEFCAL STEP-TIME=1.6SEC ------------------------------------------------------------------------------------------------------------------------------------ 53.5 ^ HRS IMAGE 2.0 MIRROR-A2 1 193.6S 1 1 Comments: TAKE MAP AFTER CENTERING 400 MSEC INTEGRATIONS EXPECT ABOUT 8 COUNTS/DIODE MAX ------------------------------------------------------------------------------------------------------------------------------------ 54 ^ HRS ACCUM 2.0 G160M 1655 STEP-PATT=5 4 5.9M 10 1 Comments: 4X5.9 MIN EXPOSURES S/N IS FOR SUM OF 4 EXP'S. ------------------------------------------------------------------------------------------------------------------------------------ 54.5 ^ HRS ACCUM 2.0 G200M 1994 STEP-PATT=5 1 4.6M 10 1 ------------------------------------------------------------------------------------------------------------------------------------ 55 WAVE HRS ACCUM SC2 G270M 2003.5 STEP-PATT=3 1 3.2S 1 CALIB FOR 56 SEQ 55-56 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 56 HD108903 HRS ACCUM 2.0 G270M 2003.5 STEP-PATT=5 2 5.0M 1 Comments: 2X5.0 MIN EXPOSURES FIRST FRAME OF WSCAN CONVERTED TO ACCUM TO ALLOW NON-INT WITH WAVECAL ------------------------------------------------------------------------------------------------------------------------------------ 57 HD108903 HRS WSCAN 2.0 G270M 2027- STEP-PATT=5 2 20.0M 1 2215 WAVE-STEP=47 Comments: 4 (2X5.0 MIN) EXPOSURES ON 47 ANGSTROM CENTERS ------------------------------------------------------------------------------------------------------------------------------------ 58 ^ HRS ACQ/ 2.0 MIRROR-A2 1 73.6S 1 1 ONBOARD ACQ FOR PEAKUP 59.0-80.0 Comments: CENTER IN LSA AFTER NEW DEFCAL STEP-TIME=1.6SEC ------------------------------------------------------------------------------------------------------------------------------------ 59 HD108903 HRS ACCUM 0.25 G270M 2345 STEP-PATT=5 3 5.0M 50 1 SEQ 59-60 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 60 WAVE HRS ACCUM SC2 G270M 2345 STEP-PATT=3 1 3.2S 1 CALIB FOR 59 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 67 HD108903 ^ ^ 0.25 G270M 2499.0 STEP-PATT=5 2 5.0M 30 1 SEQ 67-68 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 68 WAVE ^ ^ SC2 ^ ^ STEP-PATT=3 1 3.2S 1 CALIB FOR 67 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 71 HD108903 ^ ^ 0.25 G270M 2609 STEP-PATT=5 2 4.1M 30 1 SEQ 71-72 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3212c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 72 WAVE ^ ^ SC2 ^ ^ STEP-PATT=3 1 3.2S 1 CALIB FOR 71 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 75 HD108903 ^ ^ 0.25 G270M 2753 STEP-PATT=5 2 2.3M 30 1 SEQ 75-76 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 76 WAVE HRS ACCUM SC2 G270M ^ STEP-PATT=3 1 3.2S 1 CALIB FOR 75 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 76.3 HD108903 ^ ^ 0.25 G270M 2803 STEP-PATT=5 2 2.3M 30 1 SEQ 76.3-76.6 NON- INT ------------------------------------------------------------------------------------------------------------------------------------ 76.6 WAVE HRS ACCUM SC2 G270M ^ STEP-PATT=3 1 3.2S 1 CALIB FOR 76.3 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 77 HD108903 HRS ACCUM 0.25 ECH-B22 2596.0 STEP-PATT=7 6 5.0M 30 1 SEQ 77-78 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 78 WAVE HRS ACCUM SC2 ECH-B22 2596.0 STEP-PATT=3 1 3.2S 1 CALIB FOR 77 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 79 HD108903 HRS ACCUM 0.25 ECH-B20 2799.0 STEP-PATT=7 2 3.2M 100 1 SEQ 79-80 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 80 WAVE HRS ACCUM SC2 ECH-B20 2799.0 STEP-PATT=3 1 3.2S 1 CALIB FOR 79 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 3212c [ 7] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ^ ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP IMAGE ACCUM WSCAN ^ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FAINT=50 SEARCH-SIZE=5 STEP-PATT=5 STEP-PATT=3 WAVE-STEP=47 STEP-PATT=7 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 3.76 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 1 / 53-80; ONBOARD ACQ FOR 53.250; SEQ 53.0-80 NO GAP ONBOARD ACQ FOR 53.5-58 CALIB FOR 56; SEQ 55-56 NON-INT ONBOARD ACQ FOR 59.0-80.0 SEQ 59-60 NON-INT CALIB FOR 59 NO SLEW SEQ 67-68 NON-INT CALIB FOR 67 NO SLEW SEQ 71-72 NON-INT CALIB FOR 71 NO SLEW SEQ 75-76 NON-INT CALIB FOR 75 NO SLEW SEQ 76.3-76.6 NON-INT CALIB FOR 76.3 NO SLEW SEQ 77-78 NON-INT CALIB FOR 77 NO SLEW SEQ 79-80 NON-INT CALIB FOR 79 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-A2 G160M G200M G270M ^ ECH-B22 ECH-B20 ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD108903 GAMMA-CRU ------------------------------------------------------------------------------------------------------------------------------------