Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4981c Report Date: 09-May-96:20:14 Version: ********** Check-in Date: ********** 1.Proposal Title: PC II IMAGES OF ETA CAR OUTER CONDENSATIONS - EXPO ------------------------------------------------------------------------------------ 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 Dr. Dennis C. Ebbets BALL AEROSPACE CORPORATION USA (303) 939-5964 PRIN MEM TECH STAFF ------------------------------------------------------------------------------------ 7. Abstract This proposal defines a set of PC images of the outer condensations of Eta Carinae which should be made during cycle 4, after the first HST service mission. These images will be made with the second generation PC. These exposures will record the faint knots of ejecta in the light of H alpha and N II emission lines. They will tie into similar images made during cycles 0 and 3 using the PC I, and will establish the new baseline with PC II for studies of the proper motions of the ejecta over the next few years. ------------------------------------------------------------------------------------ 8. Scientific Key Words: STELLAR EVOLUTION, MASS LOSS, NUCLEOSYNTHESIS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 2.06 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4981c PI: Dr. Dennis C. Ebbets Proposal Title: PC II IMAGES OF ETA CAR OUTER CONDENSATIONS - EXPO ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Dennis Ebbets BALL AEROSPACE CORPORATION USA Eliot Malumuth COMPUTER SCIENCES CORPORATION USA Nolan Walborn SPACE TELESCOPE SCIENCE USA INSTITUTE Kris Davidson UNIV OF MINNESOTA USA Rick White SPACE TELESCOPE SCIENCE USA INSTITUTE ------------------------------------------------------------------------------------ 3. Description of proposed observations. The bright core of Eta Car will be positioned in one corner of the PC CCD. Exposures will be made with the narrow filter F658N to record the knots with minimal contamination from the Homunculus, and one shorter exposure with F675W to record fainter astrometric reference stars. This sequence will be repeated with Eta Car positioned in each of the four corners, to record the largest field of view surrounding the star with the resolution of the PC. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Spatial resolution needed to study small scale structures in Homunculus, and to measure displacements and proper motions of outwardly moving ejecta. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. The stars visible on the wider filter frames will be used to establish the astrometric reference grid. The objective is to extend our cycle 3 baseline for long term monitoring of the proper motions of the ejecta. Other objectives are to characterize the number and size distribution of the individual knots, and to search for fainter and more distant ejecta. ------------------------------------------------------------------------------------ 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 workshop on mass loss, and in a poster paper at the Atlanta AAS meeting in January, 1992. Further results on the motions of the North Condensation were presented at the Madison ASP conference in June, 1992, and at the HST workshop in Sardinia in July, 1992. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Travel support, computer facilities, publication expenses ------------------------------------------------------------------------------------ 11. Address Information 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): ------------------------------------------------------------------------------------ Page 3 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): ------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4981c [ 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 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 = 4981c [ 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 ETA-CAR PC IMAGE PCALL- F658N CR-SPLIT=NO 1 300S 50 1 1 SEQ 100-110 NO GAP FIX PRE-FLASH=YES CYCLE 4 / 100-410 Comments: USE WFPC II AFTER SERVICE MISSION CORE OF ETA CAR NEAR CORNER 1 OF PC ------------------------------------------------------------------------------------------------------------------------------------ 110 ETA-CAR PC IMAGE PCALL- F675W CR-SPLIT=NO 1 100S 50 1 1 SAME POS FOR 110 FIX PRE-FLASH=YES AS 100 CLOCKS=YES PURGE=YES ------------------------------------------------------------------------------------------------------------------------------------ 200 ETA-CAR PC IMAGE PCALL- F658N CR-SPLIT=NO 1 300S 50 1 1 SEQ 200-210 NO GAP FIX PRE-FLASH=YES Comments: USE WFPC II AFTER SERVICE MISSION CORE OF ETA CAR NEAR CORNER 2 OF PC ------------------------------------------------------------------------------------------------------------------------------------ 210 ETA-CAR PC IMAGE PCALL- F675W CR-SPLIT=NO 1 100S 50 1 1 SAME POS FOR 210 FIX PRE-FLASH=YES AS 200 CLOCKS=YES PURGE=YES ------------------------------------------------------------------------------------------------------------------------------------ 300 ETA-CAR PC IMAGE PCALL- F658N CR-SPLIT=NO 1 300S 50 1 1 SEQ 300-310 NO GAP FIX PRE-FLASH=YES Comments: USE WFPC II AFTER SERVICE MISSION CORE OF ETA CAR NEAR CORNER 3 OF PC ------------------------------------------------------------------------------------------------------------------------------------ 310 ETA-CAR PC IMAGE PCALL- F675W CR-SPLIT=NO 1 100S 50 1 1 SAME POS FOR 310 FIX PRE-FLASH=YES AS 300 CLOCKS=YES PURGE=YES ------------------------------------------------------------------------------------------------------------------------------------ 400 ETA-CAR PC IMAGE PCALL- F658N CR-SPLIT=NO 1 300S 50 1 1 SEQ 400-410 NO GAP FIX PRE-FLASH=YES Comments: USE WFPC II AFTER SERVICE MISSION CORE OF ETA CAR NEAR CORNER 4 OF PC ------------------------------------------------------------------------------------------------------------------------------------ 410 ETA-CAR PC IMAGE PCALL- F675W CR-SPLIT=NO 1 100S 50 1 1 SAME POS FOR 410 FIX PRE-FLASH=YES AS 400 CLOCKS=YES PURGE=YES ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4981c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations PC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO PRE-FLASH=YES CLOCKS=YES PURGE=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 2.06 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category HOT STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 100-110 NO GAP; CYCLE 4 / 100-410; SAME POS FOR 110 AS 100; SEQ 200-210 NO GAP; SAME POS FOR 210 AS 200; SEQ 300-310 NO GAP; SAME POS FOR 310 AS 300; SEQ 400-410 NO GAP; SAME POS FOR 410 AS 400; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F658N F675W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ETA-CAR HD93308 ------------------------------------------------------------------------------------------------------------------------------------