Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5173 Report Date: 18-Jul-95:17:02 Version: ********** Check-in Date: ********** 1.Proposal Title: WFPC2 IMAGES OF EJECTA FROM ETA CARINAE ------------------------------------------------------------------------------------ 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 images of the core and Homunculus of Eta Carinae which should be obtained during cycle 4, using the planetary camera of WPFC II. They will use only the violet filter F336W. This proposal was submitted in February 1994 as a modified version of proposal 5173. This version removed several exposures which were found to be in conflict with those of the WFPC IDT. ------------------------------------------------------------------------------------ 8. Scientific Key Words: STELLAR EVOLUTION, MASS LOSS, NUCLEOSYNTHESIS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 0.58 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5173 PI: Dr. Dennis C. Ebbets Proposal Title: WFPC2 IMAGES OF EJECTA FROM ETA CARINAE ------------------------------------------------------------------------------------ 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. There are a total of six exposures specified; two each at three slightly different pointing positions. All use filter F336W. Lines 100 and 110 place the star at the geometric center of PC1, using the syntax PC1-FIX. A short 2 sec exposure will record the bright central object, and a longer 40 sec exposure will bring out the fainter surrounding nebulosity. This pair of exposures will be repeated with the star displaced by approximately 10 pixels in each direction on lines 200-210, and by 20 pixels in each direction on lines 300-310. ------------------------------------------------------------------------------------ 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. There are no real-time or special scheduling requirements. The entire Homunculus will fit onto the PC1 detector without any special orientation. ------------------------------------------------------------------------------------ 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 = 5173 [ 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,159,926 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 = 5173 [ 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 WFPC2 IMAGE PC1-FIX F336W CR-SPLIT=NO 1 2S 50 1 1 CYCLE 4 / 100-310 ------------------------------------------------------------------------------------------------------------------------------------ 110 ETA-CAR WFPC2 IMAGE PC1-FIX F336W CR-SPLIT=NO 1 40S 50 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 200 ETA-CAR WFPC2 IMAGE PC1-FIX F336W CR-SPLIT=NO 1 2S 50 1 1 POS TARG 0.46,0.46 / 200-210 Comments: CORE OFFSET 1/2 ARC SEC EACH DIRECTION FROM CENTER OF PC1 LINES 200 - 210 ------------------------------------------------------------------------------------------------------------------------------------ 210 ETA-CAR WFPC2 IMAGE PC1-FIX F336W CR-SPLIT=NO 1 40S 50 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 300 ETA-CAR WFPC2 IMAGE PC1-FIX F336W CR-SPLIT=NO 1 2S 50 1 1 POS TARG 0.92,0.92 / 300-310 Comments: CORE OFFSET 1 ARC SEC IN EACH DIRECTION FROM CENTER OF PC1 LINES 300 - 310 ------------------------------------------------------------------------------------------------------------------------------------ 310 ETA-CAR WFPC2 IMAGE PC1-FIX F336W CR-SPLIT=NO 1 40S 50 1 1 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5173 [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 0.58 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category HOT STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 4 / 100-310; POS TARG 0.46,0.46 / 200-210; POS TARG 0.92,0.92 / 300-310; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ETA-CAR HD93308 ------------------------------------------------------------------------------------------------------------------------------------