12746( 2) - 05-Oct-2011 10:25:25 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12746 Version: 2 Check-in Time: 05-Oct-2011 10:25:25 STScI Edit Number: 0 Title Close binary populations in metal-rich globular clusters ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Albert Kong National Tsing Hua University CoI: Dr. Ting-Ni Lu National Tsing Hua University N CoI: Dr. C. Y. Hui Chungnam National University N CoI: Prof. Walter H. G. Lewin Massachusetts Institute of Technology N ------------------------------------------------------------------------------------ Abstract Recent observations of Galactic and extragalactic globular clusters have suggested that bright X-ray sources preferentially reside in metal-rich clusters. The same scenario may also happen for low-luminosity globular cluster X-ray sources. Although Chandra has observed many Galactic globular clusters, majority of them are metal-poor with [Fe/H]<-1 and there is no observational evidence for metal dependence. We propose to use Chandra/HST to study a sample of metal-rich ([Fe/H]>-0.5) globular clusters and to test the prediction that metallicity can affect the population of low-luminosity globular cluster X-ray sources. ------------------------------------------------------------------------------------ Observations Description ------------------------ We make use the high resolution images provided by HST to identify the nature of X-ray sources in globular cluster. We will cross-register the HST images, ground-based wide-field images, and Chandra images together for comparison. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12746( 2) - 05-Oct-2011 10:25:25 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-6760 STELLAR CLUSTER, RA=19H11M12.0600S +/- 0.1", J2000 V = 9.78 ACCRETION DISK, DEC=+01D01'49.70" +/- 0.1" GLOBULAR CLUSTER Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-6352 STELLAR CLUSTER, RA=17H25M29.1100S +/- 0.1", J2000 V = 8.87 ACCRETION DISK, DEC=-48D25'19.80" +/- 0.1" GLOBULAR CLUSTER Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 12746( 2) - 05-Oct-2011 10:25:25 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-MOS-DITH-LINE WFC3-UVIS-MOS-DITH-LINE Pattern_Purpose MOSAIC DITHER Number_Of_Points 3 2 Point_Spacing 2.4 0.119 Line_Spacing Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 85.754 33.606 Angle_Between_Sides Center_Pattern YES NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 3.011 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.28 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 12746( 2) - 05-Oct-2011 10:25:25 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-6760 WFC3/UVI ACCUM UVIS F336W CR-SPLIT=NO 1 3145 S PATTERN 1 1 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC-6760 1 WFC3/UVI ACCUM UVIS F336W 1 1 none none 1 400.0 S S NGC-6760 1 WFC3/UVI ACCUM UVIS F336W 1 2 none none 1 400 S S NGC-6760 1 WFC3/UVI ACCUM UVIS F336W 2 1 none none 1 400.0 S S NGC-6760 1 WFC3/UVI ACCUM UVIS F336W 2 2 none none 1 400.0 S S NGC-6760 1 WFC3/UVI ACCUM UVIS F336W 3 1 none none 1 400.0 S S NGC-6760 1 WFC3/UVI ACCUM UVIS F336W 3 2 none none 1 253.0 S S 12746( 2) - 05-Oct-2011 10:25:25 - [ 5] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-6760 ACS/WFC ACCUM WFC F658N CR-SPLIT=NO 1 1516 S PATTERN 2 1-2 see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-6760 ACS/WFC ACCUM WFC F625W CR-SPLIT=NO 1 300 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC-6760 1 ACS/WFC ACCUM WFC F658N 1 none none none 1 600.0 S NGC-6760 1 ACS/WFC ACCUM WFC F658N 2 none none none 1 536.0 S NGC-6760 2 ACS/WFC ACCUM WFC F625W 1 none none none 1 150 S NGC-6760 2 ACS/WFC ACCUM WFC F625W 2 none none none 1 150 S 12746( 2) - 05-Oct-2011 10:25:25 - [ 6] Visit: 03 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-6352 WFC3/UVI ACCUM UVIS F336W CR-SPLIT=NO 1 2769 S PATTERN 1 1 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC-6352 1 WFC3/UVI ACCUM UVIS F336W 1 1 none none 1 400.0 S S NGC-6352 1 WFC3/UVI ACCUM UVIS F336W 1 2 none none 1 400 S S NGC-6352 1 WFC3/UVI ACCUM UVIS F336W 2 1 none none 1 400 S S NGC-6352 1 WFC3/UVI ACCUM UVIS F336W 2 2 none none 1 400 S S NGC-6352 1 WFC3/UVI ACCUM UVIS F336W 3 1 none none 1 400 S S NGC-6352 1 WFC3/UVI ACCUM UVIS F336W 3 2 none none 1 410.0 S S 12746( 2) - 05-Oct-2011 10:25:25 - [ 7] Visit: 04 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-6352 ACS/WFC ACCUM WFC F658N CR-SPLIT=NO 1 1188 S PATTERN 2 1-2 see below ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-6352 ACS/WFC ACCUM WFC F625W CR-SPLIT=NO 1 250 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC-6352 1 ACS/WFC ACCUM WFC F658N 1 none none none 1 650.0 S NGC-6352 1 ACS/WFC ACCUM WFC F658N 2 none none none 1 643.0 S NGC-6352 2 ACS/WFC ACCUM WFC F625W 1 none none none 1 150 S NGC-6352 2 ACS/WFC ACCUM WFC F625W 2 none none none 1 150 S 12746( 2) - 05-Oct-2011 10:25:25 - [ 8] Summary Form for Proposal 12746 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 2 1-2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W, F625W, F658N ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-6352, NGC-6760 ------------------------------------------------------------------------------------------------------------------------------------