Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4179c Report Date: 09-May-96:19:23 Version: ********** Check-in Date: ********** 1.Proposal Title: SPECTRA OF EJECTA FROM ETA CARINAE - BASELINE CYCLE 3 PC II IMAGES OF OUTER CONDENSATIONS - BASELINE CYCLE 4 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS GTO/HRS 1186 Sub Category MASSIVE STARS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dr. Dennis C. Ebbets BALL AEROSPACE CORPORATION USA (303) 939-5964 PRIN MEM TECH STAFF ------------------------------------------------------------------------------------ 7. Abstract This proposal defines FOS and GHRS spectra of two knots of ejecta from Eta Carinae. One is the brightest point in the south-east lobe of the Homunculus, the other is the brightest point in the S Condensation. Both oobservations may be made in Cycle 3 using baseline GTO time. A set of images of the outer condensations will be made using the optically corrected PC II after the service mission. These exposures are listed as Cycle 4 in this proposal. ------------------------------------------------------------------------------------ 8. Scientific Key Words: STELLAR EVOLUTION, MASS LOSS, NUCLEOSYNTHESIS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 10.71 par: 0 10. Num targs pri: 3 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS FOS WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4179c PI: Dr. Dennis C. Ebbets Proposal Title: SPECTRA OF EJECTA FROM ETA CARINAE - BASELINE CYCLE 3 PC II IMAGES OF OUTER CONDENSATIONS - BASELINE CYCLE 4 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Dennis Ebbets BALL AEROSPACE CORPORATION USA Nolan Walborn SPACE TELESCOPE SCIENCE USA INSTITUTE Kris Davidson UNIV OF MINNESOTA USA Rick White SPACE TELESCOPE SCIENCE USA INSTITUTE Eliot Malumuth COMPUTER SCIENCES CORPORATION USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. lines 100 - 160 GHRS exposures of knot in Homunculus Onboard Acq of Eta Car core with A2 using return to brightest point search images of Eta Car and knot after offset LSA G270M 2800 - Mg II emission line step-patt=2 2 samples per diode width comb=four (def), fp-split=std (4) 12 subexposures, 5.33 minutes each lines 200-280 sequences of spectra with FOS blue and red lines 300-350 FOS spectra of S -Condensation and Homunculus knot lines 400-420 images of outer condensations with PC II these will be updated to reflect the actual characteristics of the PC II when its details are known - such as position and orientation, number of chips, sensitivity etc. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Spatial resolution needed to study inner core and small scale structures in Homunculus, and to measure displacements and proper motions of outwardly moving ejecta. UV capability needed to access important spectroscopic lines of Mg II. Spatial resolution needed also to record spectra of ejecta without contamination from central object and nearby nebulosity. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. The HRS spectra will be processed with standard techniques using either RSDP or IDT facilities. Emission lines will be analyzed with respect to fluxes, line profiles, and radial velocities. Corrections for extinction will be applied where appropriate. The various ionization stages of nitrogen will be studied to estimate the abundance. Presently undetected lines of Carbon and Oxygen will be searched for, and fluxes, or at least upper limits, will be determined. ------------------------------------------------------------------------------------ 9. Description of previous HST work. An early set of WFC and PC images were obtained in cycle 0 as part of GTO proposal 1186. Our preliminary analyses were described in the proceedings of the STScI wrkshop on mass loss, and in a poster paper at the Atlanta AAS meeting in January, 1992. GHRS spectra of the S Condensation have been proposed for cycle 2. Images of the outer condensations with PC I have been proposed for cycle 3. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Travel support, computer facilities, publication expenses ------------------------------------------------------------------------------------ 11. Address Information Page 3 Name: DENNIS EBBETS Category: PI Institution: BALL AEROSPACE SYSTEMS GROUP Address: HRS PROJECT AR-1 P.O. BOX 1062 City: BOULDER State: CO Zip Code: 80306 Country: USA Telephone: (303) 939-5964 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: KRIS DAVIDSON Category: CON Institution: UNIV. OF MINNESOTA Address: SCHOOL OF PHYS. AND ASTRON. 116 CHURCH ST SE City: MINNEAPOLIS State: MN Zip Code: 55455 Country: USA Telephone: (612) 624-5711 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: NOLAN WALBORN Category: CON Institution: SPACE TELESCOPE SCIENCE INSTITUTE Address: HOMEWOOD CAMPUS City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: (410) 338-4915 Telex (or e-mail): 6849101 ------------------------------------------------------------------------------------ Name: RICK WHITE Category: CON Institution: SPACE TELESCOPE SCIENCE INSTITUTE Address: HOMEWOOD CAMPUS City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: (410) 338-4797 Telex (or e-mail): 6849101 ------------------------------------------------------------------------------------ Name: ELIOT MALUMUTH Category: CON Institution: CSC - NASA GSFC Address: CODE 680 City: GREENBELT State: MD Zip Code: 20771 Country: USA Telephone: (301) 286-5776 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4179c [ 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 ETACAR- A,159 RA = 10H 45M 03.615S +/- 2000 1 V=7.6 +/- 0.3 OFFSET 0.1S, 2 F-CONT(4800) = 3.0 +/- 0.6 E-12 HD93308 DEC = -59D 41' 03.96" +/- 0.5", PLATE-ID=ZZZQ Comments: COORDINATES OF CENTRAL OBJECT FROM DAVIDSON'S CCD ASTROMETRY ------------------------------------------------------------------------------------------------------------------------------------ 2 S-COND A,159,926,927 RA = 10H 45M 02.330S +/- 2000 1 F-LINE(1240)=1.5E-13 0.1S, 2 F-LINE(1486)=1.5E-13 DEC = -59D 41' 06.15" +/- 3 F-LINE(1749)=2.6E-13 0.5", 4 F-LINE(2800)=2.0E-12 ------------------------------------------------------------------------------------------------------------------------------------ 3 HOMUN-KNOT A,159,926,927 RA = 10H 45M 02.330S +/- 2000 1 F-LINE(1240)=1.5E-13 0.1S, 2 F-LINE(1486)=1.5E-13 DEC = -59D 41' 06.15" +/- 3 F-LINE(1749)=2.6E-13 0.5", 4 F-LINE(2800)=2.0E-12 ------------------------------------------------------------------------------------------------------------------------------------ 4 ETA-CAR A,159 RA = 10H 45M 03.615S +/- 2000 1 V=7.6 +/- 0.3 HD93308 0.1S, DEC = -59D 41' 03.96" +/- 0.5", PLATE-ID=ZZZQ Comments: COORDINATES OF CENTRAL OBJECT FROM DAVIDSON'S CCD ASTROMETRY ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4179c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 100 ETACAR- HRS ACQ 2.0 MIRROR-A2 SEARCH-SIZE=5 1 5.0S 50 1 1 ONBOARD ACQ FOR OFFSET BRIGHT=RETURN 110-160 CYCLE 3 /100-160 SEQ 100-160 Comments: STEP-TIME = 0.2 SECONDS USE RETURN TO BRIGHTEST POINT FOR TARGET SEARCH PHASE ------------------------------------------------------------------------------------------------------------------------------------ 110 ETACAR- HRS ACQ/ 2.0 MIRROR-A2 1 51.0S 50 1 1 OFFSET PEAKUP Comments: STEP-TIME = 0.5 SECOND ------------------------------------------------------------------------------------------------------------------------------------ 120 ETACAR- HRS IMAGE 2.0 MIRROR-N2 NX=22 1 96.8S 20 1 1 OFFSET NY=22 ------------------------------------------------------------------------------------------------------------------------------------ 130 ETACAR- HRS IMAGE 2.0 MIRROR-N2 NX=22 1 96.8S 30 1 1 OFFSET NY=22 DELTA-X=2 DELTA-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 140 HOMUN-KNOT HRS IMAGE 2.0 MIRROR-N2 NX=22 1 282S 20 1 1 NY=22 ------------------------------------------------------------------------------------------------------------------------------------ 150 WAVE HRS ACCUM SC2 G270M 2800 STEP-PATT=2 1 32.0S 25 1 CALIB FOR 160 ------------------------------------------------------------------------------------------------------------------------------------ 160 HOMUN-KNOT HRS ACCUM 2.0 G270M 2800 STEP-PATT=2 3 1280.0S 45 2 1 FP-SPLIT=STD ------------------------------------------------------------------------------------------------------------------------------------ 200 DEFINE # FOS/BL ACCUM 0.5 G130H 1200- 4 5.0M 50 1 FOSBSP 1600 ------------------------------------------------------------------------------------------------------------------------------------ 210 DEFINE # FOS/BL ACCUM 0.5 G190H 1600- 2 5.0M 50 1 FOSBSP 2300 ------------------------------------------------------------------------------------------------------------------------------------ 220 DEFINE # FOS/RD ACCUM 0.5 G270H 2300- 1 5.0M 50 1 FOSRSP 3300 ------------------------------------------------------------------------------------------------------------------------------------ 230 DEFINE # FOS/RD ACCUM 0.5 G400H 3300- 1 5.0M 50 1 FOSRSP 4600 ------------------------------------------------------------------------------------------------------------------------------------ 240 DEFINE # FOS/RD ACCUM 0.5 G570H 4600- 1 5.0M 50 1 FOSRSP 6600 ------------------------------------------------------------------------------------------------------------------------------------ 250 DEFINE # FOS/RD ACCUM 0.5 G780H 6500- 1 5.0M 50 1 FOSRSP 7600 ------------------------------------------------------------------------------------------------------------------------------------ 300 ETACAR- FOS/BL ACQ/ 1.0 G570H 4600- SEARCH-SIZE=6 1 0.7S 50 1 1 ONBOARD ACQ FOR OFFSET PEAK 4820 SCAN-STEP=0.7 310-350 SEQ 300-310 NO GAP CYCLE 3 / 300-350 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4179c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 310 ETACAR- FOS/BL ACQ/ 0.5 G570H 4600- SEARCH-SIZE=5 1 1.0S 50 1 1 OFFSET PEAK 4820 SCAN-STEP=0.2 ------------------------------------------------------------------------------------------------------------------------------------ 320 USE S-COND 1 FOSBSP ------------------------------------------------------------------------------------------------------------------------------------ 330 USE S-COND 1 FOSRSP ------------------------------------------------------------------------------------------------------------------------------------ 340 USE HOMUN-KNOT 1 FOSBSP ------------------------------------------------------------------------------------------------------------------------------------ 350 USE HOMUN-KNOT 1 FOSRSP ------------------------------------------------------------------------------------------------------------------------------------ 400 ETA-CAR PC IMAGE ALL F658N CR-SPLIT=NO 5 300S 50 1 1 POS TARG -12.0, PRE-FLASH=YES +2.0 ORIENT 115D +/- 20D / 400-410 SEQ 400-410 NO GAP CYCLE 4 / 400-420 Comments: USE WFPC II AFTER SERVICE MISSION ------------------------------------------------------------------------------------------------------------------------------------ 410 ETA-CAR PC IMAGE ALL F664N CR-SPLIT=NO 2 60S 50 1 1 POS TARG -12.00, PRE-FLASH=YES +2.00 ------------------------------------------------------------------------------------------------------------------------------------ 420 KSPOTS PC IMAGE ALL F664N 1 60S 50 1 1 CALIB FOR 400,410 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4179c [ 7] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS FOS/BL FOS/RD PC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP IMAGE ACCUM ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SEARCH-SIZE=5 BRIGHT=RETURN NX=22 NY=22 DELTA-X=2 DELTA-Y=2 STEP-PATT=2 FP-SPLIT=STD SEARCH-SIZE=6 SCAN-STEP=0.7 SCAN-STEP=0.2 CR-SPLIT=NO PRE-FLASH=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 10.71 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category MASSIVE STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 110-160; CYCLE 3 /100-160; SEQ 100-160; CALIB FOR 160; ONBOARD ACQ FOR 310-350; SEQ 300-310 NO GAP; CYCLE 3 / 300-350; POS TARG -12.0,+2.0; ORIENT 115D +/- 20D / 400-410; SEQ 400-410 NO GAP; CYCLE 4 / 400-420; POS TARG -12.00,+2.00; CALIB FOR 400,410; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-A2 MIRROR-N2 G270M G130H G190H G270H G400H G570H G780H F658N F664N ------------------------------------------------------------------------------------------------------------------------------------ Target Names ETACAR-OFFSET HD93308 S-COND HOMUN-KNOT ETA-CAR ------------------------------------------------------------------------------------------------------------------------------------