10005( 3) - 10/29/03 08:16 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10005 Version: 3 Check-in Date: 29-Oct-2003 08:14:32 1.Proposal Title: A Uniform Study of Globular Cluster X-raySources: The Keys to Cluster Dynamical Evolution ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 12 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Prof. Walter H. G. Lewin Massachusetts Institute of Technology CoI: Prof. Alex V. Filippenko University of California - Berkeley N CoI: Dr. Steve McMillan Drexel University N CoI: Dr. Michiel Van Der Klis Universiteit van Amsterdam N CoI: Dr. Jun Makino University of Tokyo, Graduate School of N Science CoI: Dr. David A. Pooley Massachusetts Institute of Technology N CoI: Prof. Frank Verbunt Universiteit Utrecht, Sterrekundig N Instituut CoI: Dr. Lee Homer University of Washington N CoI: Dr. Bruce Margon Space Science Institute N CoI: Prof. Scott Anderson University of Washington Y CoI: Dr. Piet Hut Institute For Advanced Study N CoI: Dr. Victoria M. Kaspi McGill University N CoI: Dr. Simon Portegies Zwart Universiteit van Amsterdam N CoI: Dr. Rudy Wijnands University of St. Andrews N CoI: Dr. Bryan Gaensler Harvard University N ------------------------------------------------------------------------------------ 5. Abstract We propose to extend our ongoing studies of the dynamical evolution of globular clusters by observing their populations of low-luminosity X-ray sources. Many of these sources are binary systems (or have evolved from them) and hold the key to the clusters with widely different physical properties such as central concentration, cluster size and mass, which are all key ingredients in the formation and evolution of binaries. To make this study as uniform as possible, the clusters will be observed to the same limiting luminosity. Numberical simulations with the world's fastest computer will assist in the interpretation of our observational data. ------------------------------------------------------------------------------------ 10005( 3) - 10/29/03 08:16 - [ 2] Observations Description ------------------------ ACS/WC images in B, r, H-alpha will be taken in two globular clusters, 2 visibilities per cluster. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10005( 3) - 10/29/03 08:16 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC362 STELLAR CLUSTER, RA=01H03M14.3S +/- 1.0", DEC=- J2000 V = 20.0+/-1.0 GLOBULAR CLUSTER 70D50'54.0" +/- 1.0" SURF-BKG(V)=14.9 Coordinate Source: Other_Source: Harris et al. 1996 Comments: Science targets are moderately faint stars (V~20) near core of globular cluster. 2 NGC6218 STELLAR CLUSTER, RA=16H47M14.5S +/- 1.0", DEC=- J2000 V = 20.0+/-1.0 GLOBULAR CLUSTER 01D56'52.0" +/- 1.0" SURF-BKG(V)=18.2 Coordinate Source: Other_Source: Harris et al. 1996 Comments: Science targets are moderately faint stars (V~20), near the core of a globular cluster. 10005( 3) - 10/29/03 08:16 - [ 4] Visit: 10 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: NGC362 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC362 ACS/WF ACCUM WFC1-FI F625W GAIN=2,CR-SPLIT=NO 1 110 S C X ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC362 ACS/WF ACCUM WFC1-FI F435W GAIN=2,CR-SPLIT=2 1 680 S C X ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC362 ACS/WF ACCUM WFC1-FI F658N GAIN=2,CR-SPLIT=2 1 880 S C X ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC362 ACS/WF ACCUM WFC1-FI F625W GAIN=2,CR-SPLIT=NO 1 110 S C X ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC362 ACS/WF ACCUM WFC1-FI F625W GAIN=2,CR-SPLIT=NO 1 120 S POS TARG 0.248, 3.001 C X ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC362 ACS/WF ACCUM WFC1-FI F435W GAIN=2,CR-SPLIT=2 1 680 S SAME POS AS 5 C X ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC362 ACS/WF ACCUM WFC1-FI F658N GAIN=2,CR-SPLIT=2 1 1000 S SAME POS AS 5 C X ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC362 ACS/WF ACCUM WFC1-FI F625W GAIN=2,CR-SPLIT=NO 1 120 S SAME POS AS 5 C X ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 10 1 none none none none 1 tbd 10 2 none none none 1 1 tbd 10 2 none none none 2 1 tbd 10 3 none none none 1 1 tbd 10 3 none none none 2 1 tbd 10 4 none none none none 1 tbd 10 5 none none none none 2 tbd 10 6 none none none 1 2 tbd 10 6 none none none 2 2 tbd 10 7 none none none 1 2 tbd 10 7 none none none 2 2 tbd 10005( 3) - 10/29/03 08:16 - [ 5] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 10 8 none none none none 2 tbd 10005( 3) - 10/29/03 08:16 - [ 6] Visit: 20 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: NGC6218 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6218 ACS/WF ACCUM WFC F625W GAIN=2,CR-SPLIT=NO 1 40 S C ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6218 ACS/WF ACCUM WFC F435W GAIN=2,CR-SPLIT=2 1 680 S C ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6218 ACS/WF ACCUM WFC F658N GAIN=2,CR-SPLIT=2 1 680 S C ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6218 ACS/WF ACCUM WFC F625W GAIN=2,CR-SPLIT=NO 1 40 S C ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6218 ACS/WF ACCUM WFC F625W GAIN=2,CR-SPLIT=NO 1 60 S POS TARG 0.248, 3.001 C ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC6218 ACS/WF ACCUM WFC F435W GAIN=2,CR-SPLIT=2 1 680 S SAME POS AS 5 C ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC6218 ACS/WF ACCUM WFC F658N GAIN=2,CR-SPLIT=2 1 680 S SAME POS AS 5 C ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC6218 ACS/WF ACCUM WFC F625W GAIN=2,CR-SPLIT=NO 1 60 S SAME POS AS 5 C ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 20 1 none none none none 1 tbd 20 2 none none none 1 1 tbd 20 2 none none none 2 1 tbd 20 3 none none none 1 1 tbd 20 3 none none none 2 1 tbd 20 4 none none none none 1 tbd 20 5 none none none none 2 tbd 20 6 none none none 1 2 tbd 20 6 none none none 2 2 tbd 20 7 none none none 1 2 tbd 20 7 none none none 2 2 tbd 10005( 3) - 10/29/03 08:16 - [ 7] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 20 8 none none none none 2 tbd 10005( 3) - 10/29/03 08:16 - [ 8] Summary Form for Proposal 10005 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC1-FIX WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters GAIN=2 CR-SPLIT=NO CR-SPLIT=2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG 0.248, 3.001 SAME POS AS 5 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F625W F435W F658N ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC362 NGC6218 ------------------------------------------------------------------------------------------------------------------------------------