Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4251c Report Date: 09-May-96:19:29 Version: ********** Check-in Date: ********** 1.Proposal Title: PHYSICAL CONDITIONS AND VELOCITY STRUCTURES IN THE RED GIANT WINDS IN THE BINARIES CI CYG AND EG AND -- REPEAT FOR HOPR#67 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS RPT/HRS 1198 Sub Category COOL STARS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Kenneth G. Carpenter NASA - GODDARD SPACE FLIGHT USA 301-286-3453 ASTROPHYSICIST ------------------------------------------------------------------------------------ 7. Abstract This proposal represents a two pronged attack aimed at understanding the detailed chracteristics of red giant winds in binary star systems. Red giant winds can provide the most massive, sustained form of mass transfer in binaries. The symbiotic and related stars, which contain red giant and hot companion stars, permit line of sight studies through a range of red giant atmospheric heights. The goal of this work is to attempt to define both the mechanism of rapid mass loss in red giant stars and the details of mass transfer to the companion stars. Such results can provide important constraints for both stellar and binary evolution theories. In each case we expect to derive density and temperature values for the red giant wind region and compare this to the present understanding of single star conditions where low temperature, dust and molecule forming, circumstellar envelopes prevail. (Only EG And observations are included in this file) ------------------------------------------------------------------------------------ 8. Scientific Key Words: COOL STARS; CHROMOSPHERES, WINDS, MASS LOSS, BINARIES; SYMBIOTIC STARS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 1.48 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4251c PI: Kenneth G. Carpenter Proposal Title: PHYSICAL CONDITIONS AND VELOCITY STRUCTURES IN THE RED GIANT WINDS IN THE BINARIES CI CYG AND EG AND -- REPEAT FOR HOPR#67 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Kenneth G. Carpenter NASA - GODDARD SPACE FLIGHT USA CENTER Robert E. Stencel COLORADO, UNIVERSITY OF USA Jeffrey L. Linsky COLORADO, UNIVERSITY OF USA Richard D. Robinson CSC - ASTRONOMY PROGRAM USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. SUMMARY OF GHRS OBSERVATIONS OF EG AND GRAT. WAVE EXPT(MIN.) --------------- ----------- G160M 1400 3 x 5.0 min " 1550 1 x 5.0 " 1653 1 x 4.1 Companion wavelength calibration exposures will be taken along with each observation. The SSA is used for all 3 observations. GHRS observations of CI Cyg are specified in the cycle 2 proposal GTO 3934. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Each of these objects has been extensively studied with the International Ultraviolet Explorer in "high resolution" mode. The spectral resolution of IUE permits velocity determinations (with care) of only +/- 10 km/sec in the far UV. As a consequence, IUE studies of red giant winds (10-30 km/sec) and narrow absorption features are handicapped. The superior resolution and dynamic range of HRS is required. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. Please do not schedule EG And observations (#18-30) during eclipse period (August - September 1993), to ensure a successfull target acquisition. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. Wavelength calibration exposures are required to allow us to obtain the maximum possible wavelength (and thus velocity) precision possible in the optical configurations chosen. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. Data acquisitions will include spectral calibration. GHRS IDT software will be used to ensure optimum calibration of the data and to to derive absolute wavelengths, fluxes, and profile characteristics of observed spectral features. This done, lines of CI Cyg can be examined for profile asymmetries and systematic velocity differences. For CI Cyg and EG And, the O IV density diagnostic will be used. For EG And, the instrinsic profiles of the transient HE II 1640 A absorption and the complex C IV 1550 A features determined. In both cases, important fiducial observations will thus be obtained for further HST study of these very long period systems. ------------------------------------------------------------------------------------ 12. The targets observed in this program are: 1. CI Cyg (cycle 2, GTO 3934) 2. EG And (rerun of cycle 1 program, this file) Page 3 ------------------------------------------------------------------------------------ 13. Two "symbiotic stars" (CI Cyg + EG And) will be studied with HRS, for their line and continuum properties at high signal to noise and moderate and echelle spectral resolution, in order to characterize the red giant winds, interactions and hot companion stars of these long period binaries. ------------------------------------------------------------------------------------ 11. Address Information Name: KENNETH G. CARPENTER Category: PI Institution: NASA - GODDARD SPACE FLIGHT CENTE Address: CODE 681 City: GREENBELT State: MD Zip Code: 20771 Country: USA Telephone: 301-286-3453 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: ROBERT E. STENCEL Category: Institution: CASA - UNIVERSITY OF COLORADO Address: CAMPUS BOX 391 City: BOULDER State: CO Zip Code: 80309 Country: USA Telephone: (303)-494-4297 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 = 4251c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 2 HD4174 EG- A,155 RA = 0H 41M 52.700S+/- 0.3", 1950 V=-95 1 V=7.4,TYPE=M2 III AND DEC = +40D 24' 22.17"+/- 2 F(1400)=5.0E-12 0.3" 3 F(1550)=2.5E-11 4 F(1640)=1.5E-12 Comments: FLUXVALS ARE FOR TOP OF EMISSION LINES IN EG AND M2 IIIEP + SD Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B 1957.87 0.0009 +/- 0.0007 -0.0150 +/- 0.0100 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4251c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 18 HD4174 HRS ACQ 2.0 MIRROR-N2 LOCATE=YES 1 5.0S 1 3 ONBOARD ACQ FOR BRIGHT=RETURN 18.25 SEARCH-SIZE=5 CYCLE 1 / 18-28 SEQ 18 - 28 NO GAP Comments: DO NOT SCHEDULE HD4174 (EG AND) =LINES 18-28 DURING 8/93-9/93, LINES NOT PRESENT IN ECLIPSE. EXPECT 4125 CTS/200 MSEC WITH SA ------------------------------------------------------------------------------------------------------------------------------------ 18.25 ^ HRS ACQ/ 2.0 MIRROR-N2 1 9.2S 1 ^ ONBOARD ACQ FOR PEAKUP 19.0-28.0 Comments: STEP-TIME = 200 MSEC ------------------------------------------------------------------------------------------------------------------------------------ 19 ^ ^ ACCUM 0.25 G160M 1400.0 STEP-PATT=5 3 5.0M 48 2 ^ SEQ 19-28 NON-INT Comments: S/N IS FOR SUM OF 3 EXP. ------------------------------------------------------------------------------------------------------------------------------------ 20 WAVE HRS ACCUM SC2 G160M 1400.0 STEP-PATT=3 1 30S 3 CALIB FOR 19 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 23 HD4174 HRS ACCUM 0.25 G160M 1550 STEP-PATT=5 1 5.0M 64 3 3 ------------------------------------------------------------------------------------------------------------------------------------ 24 WAVE ^ ^ SC2 ^ ^ STEP-PATT=3 ^ 30S ^ CALIB FOR 23 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ 27 HD4174 ^ ^ 0.25 G160M 1653.0 STEP-PATT=5 1 4.1M 6 4 ^ ------------------------------------------------------------------------------------------------------------------------------------ 28 WAVE ^ ^ SC2 ^ 1653.0 STEP-PATT=3 1 30S ^ CALIB FOR 27 NO SLEW Comments: THE "WAVE" EXPOSURE WITH EACH ECH OBSERVATION IS TO BE TAKEN AT THE SAME CARROUSEL POSITION USED FOR THE TARGET OBSERVATION. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4251c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ^ ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP ACCUM ^ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters LOCATE=YES BRIGHT=RETURN SEARCH-SIZE=5 STEP-PATT=5 STEP-PATT=3 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for RPT/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 1.48 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 18.25; CYCLE 1 / 18-28; SEQ 18 - 28 NO GAP ONBOARD ACQ FOR 19.0-28.0 SEQ 19-28 NON-INT CALIB FOR 19 NO SLEW CALIB FOR 23 NO SLEW CALIB FOR 27 NO SLEW ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-N2 G160M ^ ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD4174 EG-AND ------------------------------------------------------------------------------------------------------------------------------------