Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1280c Report Date: 09-May-96:16:25 Version: ********** Check-in Date: ********** 1.Proposal Title: COLLAPSED CORES OF GLOBULAR CLUSTERS -- CYCLE 0 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID GALAXIES & CLUSTERS GTO/OS Sub Category NEARBY GALAXIES ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Ivan R. King UC, BERKELEY USA 415-642-2206 ------------------------------------------------------------------------------------ 7. Abstract About a dozen globular clusters are known that have the central density peak that is probably the signature of dynamically collapsed core. These will be imaged for surface photmetry at higher resolution than can be achieved on the ground. Simultaneous WFC exposures will contribute information on the raidal density distribution of faint stars. ------------------------------------------------------------------------------------ 8. Scientific Key Words: GLOBULAR CLUSTER--DYNAMICS ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 4.67 par: 0 10. Num targs pri: 12 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1280c PI: Ivan R. King Proposal Title: COLLAPSED CORES OF GLOBULAR CLUSTERS -- CYCLE 0 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Ivan R. King UC, BERKELEY USA S. Djorgovski CENTER FOR ASTROPHYSICS USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. on 5 clusters: f/96, F342W, 1500 s on 2 of these, an additional exposure: f/96, F342W+F2ND, 300 s on 6 clusters: f/96, F430W, 1200 s in all cases parallel exposures with WFC: 40% of the FOC time with F555W 60% of the FOC time with F785LP Cycle 0: Exp. 14, 26 Cycle 1: TBD ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. resolving power ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. To be done on UC Berkeley Astronomy VAX. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. parallel exosures with WFC at any p.a. convenient to operations ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). VAX, S/W offices, postdoc, RA's ------------------------------------------------------------------------------------ 13. Star counts and near-UV surface photmetry of the central regions of globular clusters known or suspected to have brightness peaks in their cores. ------------------------------------------------------------------------------------ 11. Address Information Name: IVAN R. KING Category: PI Institution: UNIVERSITY OF CALIFORNIA Address: ASTRONOMY DEPARTMENT City: BERKELEY State: CA Zip Code: 94720 Country: USA Telephone: 415-642-2206 Telex (or e-mail): 820181 UCB AST RAL ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1280c [ 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 NGC5946 GLOBULAR CLUSTER RA=15H31M49.5S+/-.1S, 1950 EXT DEC=-50D29'37"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6256 ^ RA=16H56M10.2S+/-.1S, ^ ^ DEC=-37D02'49"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6342 ^ RA=17H18M13.0S+/-.1S, ^ ^ DEC=-19D32'19"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6453 ^ RA=17H47M32.0S+/-.1S, ^ ^ DEC=-34D35'08"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6558 ^ RA=18H07M03.3S+/-.1S, ^ ^ DEC=-31D46'27"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC6642 ^ RA=18H28M51.7S+/-.1S, ^ ^ DEC=-23D30'47"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC6681 M70 ^ RA=18H39M57.3S+/-.1S, ^ ^ DEC=-32D20'32"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC7078 M15 ^ RA=21H27M33.4S+/-.1S, ^ ^ DEC=+11D56'49"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC7099 M30 ^ RA=21H37M31.7S+/-.1S, ^ ^ DEC=-23D24'23"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 10 HP1 GLOBULAR CLUSTER RA=17H27M55S+/-1S, 1950 EXT DEC=-29D56'54"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 11 TRZ2 ^ RA=17H24M21S+/-1S, ^ ^ DEC=-30D45'40"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 12 TRZ6 GLOBULAR CLUSTER RA=17H47M34S+/-1S, 1950 EXT DEC=-31D15'44"+/-1" ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC5946- GLOBULAR CLUSTER OUTER RA=15H31M49.5S, 1950 OUTER FIELD DEC=-50D29'37", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC6256- ^ RA=16H56M10.2S, ^ OUTER DEC=-37D02'49", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC6342- ^ RA=17H18M13.0S, ^ OUTER DEC=-19D32'19", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC6453- ^ RA=17H47M32.0S, ^ OUTER DEC=-34D35'08", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1280c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC6558- ^ RA=18H07M03.3S, ^ OUTER DEC=-31D46'27", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC6642- ^ RA=18H28M51.7S, ^ OUTER DEC=-23D30'47", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 19 NGC6681- ^ RA=18H39M57.3S, ^ OUTER DEC=-32D20'32", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC7078- GLOBULAR CLUSTER OUTER RA=21H27M33.4S, 1950 OUTER FIELD DEC=+11D56'49", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC7099- ^ RA=21H37M31.7S, ^ OUTER DEC=-23D24'23", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 22 HP1-OUTER ^ RA=17H27M55S, 1950 DEC=-29D56'54", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 23 TRZ2-OUTER GLOBULAR CLUSTER OUTER RA=17H24M21S, ^ FIELD DEC=-30D45'40", REGION,R=7' ------------------------------------------------------------------------------------------------------------------------------------ 24 TRZ6-OUTER ^ RA=17H47M34S, 1950 DEC=-31D15'44", REGION,R=7' Comments: TARGETS 13-24 ARE PARALLEL FIELDS FOR WFC WHILE FOC96 IS OBSERVING PRIMARY TARGETS. TARGET 13 CORRESPONDS WITH 1, 14, WITH 2, ETC. FLUX DATA ARE IRRELEVANT, SINCE THESE EXPOSURES ARE CHOSEN TO BRACKET THE SURFACE BRIGHTNESSES OF ALL THE TARGETS. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1280c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 DEFINE # FOC/96 IMAGE 512X512 F342W 1 1500S # SEQ 1-2 NO GAP UV2 ------------------------------------------------------------------------------------------------------------------------------------ 2 ^ ^ ^ ^ 512X512 F342W, 1 300S ^ SAME ORIENT FOR 2 F2ND AS 1 SAME POS FOR 2 AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 15 USE UV2 NGC7099 1 CYCLE 0 ORIENT 340D +/- 80D ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1280c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOC/96 ^ ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ^ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/OS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 4.67 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category GALAXIES & CLUSTERS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category NEARBY GALAXIES ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 1-2 NO GAP SAME ORIENT FOR 2 AS 1; SAME POS FOR 2 AS 1 CYCLE 0; ORIENT 340D +/- 80D; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F342W F342W,F2ND ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC5946 NGC6256 NGC6342 NGC6453 NGC6558 NGC6642 NGC6681 M70 NGC7078 M15 NGC7099 M30 HP1 TRZ2 TRZ6 NGC5946-OUTER NGC6256-OUTER NGC6342-OUTER NGC6453-OUTER NGC6558-OUTER NGC6642-OUTER NGC6681-OUTER NGC7078-OUTER NGC7099-OUTER HP1-OUTER TRZ2-OUTER TRZ6-OUTER ------------------------------------------------------------------------------------------------------------------------------------