Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5714 Report Date: 18-Jul-95:17:53 Version: ********** Check-in Date: ********** 1.Proposal Title: IMAGING OF UV BRIGHT STARS IN METAL RICH GLOBULAR CLUSTERS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID GALAXIES & CLUSTERS GO/CAR 3804 Sub Category STELLAR POPULATIONS ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone R. michael Rich COLUMBIA UNIVERSITY USA 212-854-6837 ------------------------------------------------------------------------------------ 7. Abstract Reshoot proposal for GO 3804. Metal rich Galactic globular clusters and a field in the Galactic Bulge will be imaged in the UV and V bands to search for ultraviolet bright stars. Images will be obtained in the Wood's Filter (F160BW), F218W (a wide U) and a short image in the F555W (Wide V) filter to obtain positions for and verify any UV-bright stars detected. Effective temperatures and bolometric luminosities will be determined for these UV bright stars. Their num- bers relative to the total cluster luminosity will determine constrain their evolutionary life times. It is predicted that metal rich system may contain UV-bright stars of 100-1000 Lsun and 10^6 - 10^7 yr life- times; they would 1/10 as numerous as HB stars, but there should be between 3 and 30 such stars per cluster. Similar objects may explain the ultraviolet rising flux seen in giant elliptical galaxies, an unexplained hot population that is stronger in metal rich galaxies. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 3.50 par: 0 10. Num targs pri: 4 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: WF/PC ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5714 PI: R. michael Rich Proposal Title: IMAGING OF UV BRIGHT STARS IN METAL RICH GLOBULAR CLUSTERS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ R. Michael Rich 1770 USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. All observations of a cluster should be made at same position in sky, same telescope roll angle, with only interruptions due to Earth occult. (e.g. GROUP 1.1,1.2,1.3 NO GAP, SAME POS FOR 1.2,1.3 AS 1.1). All long exposures are cosmic- ray split exactly in half(CR-SPLIT=0.5;CR-TOLERANCE=0.0). Need both Woods and F218W (Wide U) for temperatures; F555W V for placing stars in HR diagram. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). See answer to question 10. on the HST Cycle 4 proposal general form. ------------------------------------------------------------------------------------ 11. Address Information Name: R. MICHAEL RICH Category: PI Institution: 1770 Address: DEPT OF ASTRONOMY BOX 42 PUPIN 538 W. 120TH ST City: NEW YORK State: NY Zip Code: 10027 Country: USA Telephone: 212-854-6837 Telex (or e-mail): RMR@CUPHYD.PHYS.COLUMBIA.EDU ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5714 [ 3] ------------------------------------------------------------------------------------------------------------------------------------ 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 NGC6637 C, 201 RA = 18H 31M 23.0S +/- J2000 2.000S, DEC = -32D 20' 45.0" +/- 2.000" ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6352 C, 201 RA = 17H 25M 30.0S +/- J2000 2.000S, DEC = -48D 25' 30.0" +/- 2.000" ------------------------------------------------------------------------------------------------------------------------------------ 3 SGR-I C, 201 RA = 17H 55M 55.0S +/- 1950.0 2.000S, DEC = -29D 05' 54.0" +/- 2.000" ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6624 C, 201 RA = 18H 23M 40.0S +/- J2000 2.000S, DEC = -30D 21' 40.0" +/- 2.000" ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5714 [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 0.1 DEFINE # WFPC2 IMAGE WF3 F160BN15 ATD-GAIN=7 1 10S 1 CYCLE 4 XU CR-SPLIT=0.5 PCS MODE F CR- TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 0.2 DEFINE # WFPC2 IMAGE WF3 F218W ATD-GAIN=7 1 10S 1 CYCLE 4 XB CR-SPLIT=0.5 PCS MODE F CR- TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 0.3 DEFINE # WFPC2 IMAGE WF3 F555W ATD-GAIN=15 1 10S 1 CYCLE 4 XV CR-SPLIT=0.5 PCS MODE F CR- TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 1.1 USE XU NGC6637 x80 ------------------------------------------------------------------------------------------------------------------------------------ 1.2 USE XB NGC6637 x20 ------------------------------------------------------------------------------------------------------------------------------------ 1.3 USE XV NGC6637 x10 GROUP 1.1,1.2,1.3 NO GAP SAME POS FOR 1.2, 1.3 AS 1.1 ------------------------------------------------------------------------------------------------------------------------------------ 2.1 USE XU NGC6352 x80 ------------------------------------------------------------------------------------------------------------------------------------ 2.2 USE XB NGC6352 x20 ------------------------------------------------------------------------------------------------------------------------------------ 2.3 USE XV NGC6352 x10 GROUP 2.1,2.2,2.3 NO GAP SAME POS FOR 2.2, 2.3 AS 2.1 ------------------------------------------------------------------------------------------------------------------------------------ 3.1 USE XU SGR-I x80 ------------------------------------------------------------------------------------------------------------------------------------ 3.2 USE XB SGR-I x20 ------------------------------------------------------------------------------------------------------------------------------------ 3.3 USE XV SGR-I x10 GROUP 3.1,3.2,3.3 NO GAP SAME POS FOR 3.2, 3.3 AS 3.1 ------------------------------------------------------------------------------------------------------------------------------------ 4.1 USE XU NGC6624 x80 ------------------------------------------------------------------------------------------------------------------------------------ 4.2 USE XB NGC6624 x20 ------------------------------------------------------------------------------------------------------------------------------------ 4.3 USE XV NGC6624 x10 GROUP 4.1,4.2,4.3 NO GAP SAME POS FOR 4.2, 4.3 AS 4.1 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5714 [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ATD-GAIN=7 CR-SPLIT=0.5 CR-TOLERANCE=0.0 ATD-GAIN=15 CR-SPLIT=0.5 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO/CAR ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 3.50 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category GALAXIES & CLUSTERS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category STELLAR POPULATIONS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 4; PCS MODE F; GROUP 1.1,1.2,1.3 NO GAP; SAME POS FOR 1.2,1.3 AS 1.1; GROUP 2.1,2.2,2.3 NO GAP; SAME POS FOR 2.2,2.3 AS 2.1; GROUP 3.1,3.2,3.3 NO GAP; SAME POS FOR 3.2,3.3 AS 3.1; GROUP 4.1,4.2,4.3 NO GAP; SAME POS FOR 4.2,4.3 AS 4.1; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160BN15 F218W F555W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC6637 NGC6352 SGR-I NGC6624 ------------------------------------------------------------------------------------------------------------------------------------