12760( 6) - 12-Oct-2011 17:53:33 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12760 Version: 6 Check-in Time: 12-Oct-2011 17:53:33 STScI Edit Number: 3 Title DIRECT CHANDRA CONSTRAINTS ON THE EVOLUTION OF FIELD LMXB POPULATIONS ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Bret Lehmer The Johns Hopkins University CoI: Dr. David M. Alexander University of Cambridge N CoI: Ms. Antara Basu-Zych Columbia University in the City of New N York CoI: Dr. Franz Bauer Pontificia Universidad Catolica de Chile N CoI: Dr. W. Nielsen Brandt The Pennsylvania State University N CoI: Dr. Tassos Fragos Harvard University N CoI: Dr. Ann Hornschemeier NASA Goddard Space Flight Center N CoI: Dr. Leigh Jenkins NASA Goddard Space Flight Center N CoI: Dr. Vicky Kalogera Northwestern University N CoI: Dr. Gregory R. Sivakoff The University of Virginia N CoI: Dr. Panayiotis Tzanavaris Oak Ridge Associated Universities N CoI: Dr. Andreas Zezas Smithsonian Institution Astrophysical N Observatory ------------------------------------------------------------------------------------ Abstract We propose to study in detail the field LMXB populations in four nearby early-type galaxies that cover a broad range of mean stellar ages (3-10 Gyr). We will conduct deep Chandra observations of two galaxies with young and intermediate stellar ages (3-5 Gyr), and image with HST three of the four galaxies. These observations will allow for (1) the detection of >50-100 LMXBs per galaxy, (2) the separation of GC and field LMXBs, and (3) provide empirical constraints on how the field XLF depends on stellar age. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will be mapping with ACS imaging the galaxy NGC 3384 in three orbits, with each orbit observing a different region of the galaxy. For each orbit, we will take three F850LP (with one 90 s and two 575 s) and two F475W (at 355s each) exposures. We anticipate guide star acquisition for each orbit will require 6 min and filter changes, camera setups, and readouts will require a total of 15.5 min (3 ? 2.5 + 2 ? 4) during the orbit. The short exposure, included to guard against possible saturation of the galactic nuclei, occurs at the beginning of each orbit to avoid the buffer dump penalty. Total on source integration is then 32.5 min per orbit. Real Time Justification ----------------------- Calibration Justification 12760( 6) - 12-Oct-2011 17:53:33 - [ 2] ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12760( 6) - 12-Oct-2011 17:53:33 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-3384 GALAXY, LENTICULAR RA=10H48M16.9000S +/- 1.0", J2000 V = 10.65 +/- 0.4 DEC=+12D37'45.00" +/- 1.0" Reference Frame: Other: GSC2 ------------------------------------------------------------------------------------------------------------------------------------ 12760( 6) - 12-Oct-2011 17:53:33 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 2.994 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.27 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 2.994 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.27 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 12760( 6) - 12-Oct-2011 17:53:33 - [ 5] Visit: 04 Visit Requirements: ORIENT 102.0D TO 113.0 D 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-3384 ACS/WFC ACCUM WFCENTER F475W CR-SPLIT=NO 1 390.0 S POS TARG -98.02763414502938, -45.71103651264363; GS ACQ SCENARIO ONEB1B3; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-3384 ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO 1 435.0 S POS TARG -98.02763414502938, -45.71103651264363; PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 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-3384 1 ACS/WFC ACCUM WFCENTER F475W 1 none none none 1 N/A NGC-3384 1 ACS/WFC ACCUM WFCENTER F475W 2 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 1 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 2 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 3 none none none 1 N/A 12760( 6) - 12-Oct-2011 17:53:33 - [ 6] Visit: 05 Visit Requirements: SAME ORIENT AS 04 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-3384 ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO 1 90 S POS TARG 0.0, 0.0; GS ACQ SCENARIO ONEB1B3 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-3384 ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO 1 600.0 S POS TARG 0.0, 0.0; PATTERN 1 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-3384 ACS/WFC ACCUM WFCENTER F475W CR-SPLIT=NO 1 400.0 S POS TARG 0.0, 0.0; PATTERN 1 3 ------------------------------------------------------------------------------------------------------------------------------------ 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-3384 1 ACS/WFC ACCUM WFCENTER F850LP none none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 1 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 2 none none none 1 N/A NGC-3384 3 ACS/WFC ACCUM WFCENTER F475W 1 none none none 1 N/A NGC-3384 3 ACS/WFC ACCUM WFCENTER F475W 2 none none none 1 N/A 12760( 6) - 12-Oct-2011 17:53:33 - [ 7] Visit: 06 Visit Requirements: SAME ORIENT AS 04 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-3384 ACS/WFC ACCUM WFCENTER F475W CR-SPLIT=NO 1 390.0 S POS TARG 98.02763414502938, 45.71103651264363; GS ACQ SCENARIO ONEB1B3; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-3384 ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO 1 435.0 S POS TARG 98.02763414502938, 45.71103651264363; PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 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-3384 1 ACS/WFC ACCUM WFCENTER F475W 1 none none none 1 N/A NGC-3384 1 ACS/WFC ACCUM WFCENTER F475W 2 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 1 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 2 none none none 1 N/A NGC-3384 2 ACS/WFC ACCUM WFCENTER F850LP 3 none none none 1 N/A 12760( 6) - 12-Oct-2011 17:53:33 - [ 8] Summary Form for Proposal 12760 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFCENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO ONEB1B3, ORIENT 102.0D TO 113.0 D, PATTERN 1 1, PATTERN 1 2, PATTERN 1 3, PATTERN 2 2, POS TARG -98.02763414502938, -45.71103651264363, POS TARG 0.0, 0.0, POS TARG 98.02763414502938, 45.71103651264363, SAME ORIENT AS 04 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F475W, F850LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-3384 ------------------------------------------------------------------------------------------------------------------------------------