13018( 3) - 10-Dec-2012 13:24:06 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13018 Version: 3 Check-in Time: 10-Dec-2012 13:24:06 STScI Edit Number: 0 Title Deciphering the Assembly History of Galactic Disks: The Resolved Record in the Outer Disk of M31 ------------------------------------------------------------------------------------ Type Cycle GO 20 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Annette Ferguson University of Edinburgh, Institute for Y Astronomy CoI: Dr. Edouard Bernard University of Edinburgh, Institute for N Astronomy CoI: Dr. Aaron Dotter Space Telescope Science Institute N CoI: Dr. Alan McConnachie Dominion Astrophysical Observatory N CoI: Prof. Scott C. Chapman University of Cambridge N CoI: Dr. John Dubinski University of Toronto N CoI: Dr. Rodrigo Ibata Universite de Strasbourg I N CoI: Dr. Michael Irwin University of Cambridge N ------------------------------------------------------------------------------------ Abstract Disk galaxies account for a sizeable fraction of the stellar mass in the Universe yet the details of their formation and evolution are poorly understood. Measurements of the radial star formation and chemical enrichment histories across disks provide key constraints on models and are made with the highest precision in nearby systems where stellar populations can be resolved into individual stars. In a previous cycle, we obtained deep HST/ACS observations of a field at 26 kpc in M31’s outer disk which we have used to reconstruct the star formation history back to early epochs. Our results are fascinating -- star formation at this location proceeded at a near constant rate until 5 Gyr ago when there was a rapid decline in activity followed by a short intense burst. This burst, centered at 2 Gyr, created ~25% of the stellar mass and coincides with a sharp drop in metallicity, highly suggestive of the inflow of metal-poor gas. Dynamical models of the M31-M33 interaction favour ~2-3 Gyr ago as the last pericentric passage, when the systems were within ~50 kpc of each other. In order to firmly establish the role this interaction played in triggering star formation in M31’s outer disk, we request similar depth observations at two additional locations in order to determine if the behaviour derived from this single field is globally representative. Additionally, these pointings will span a considerable baseline over which to examine radial gradients in the old (> 5 Gyr) populations and, when combined with extant Keck radial velocities, will provide an exquisite dataset with which to test ideas about radial migration and disk galaxy assembly. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain deep CMDs at two locations (~20 and 23 kpc) in the outer disk of M31. We will image in the broad-V (F606W) and I (F814W) filters. Our goal is to reach 10 Gyr main sequence turn-off stars with [Fe/H]=-0.7 and E(B-V)=0.06 at the M31 distance (783 kpc); this requires V=29 with S/N>=8 and can be achieved with 6 orbits with F606W and 7 orbits with F814W. Visits comprise either 3 13018( 3) - 10-Dec-2012 13:24:06 - [ 2] orbits in F606W or F814W, or 4 orbts in F814W. Exposures have small dithers in order to aid removal of CRs and hot pixels. Parallel exposures are obtained with WFC3/UVIS in F606W and F814W. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 13018( 3) - 10-Dec-2012 13:24:06 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 M31-SW-DISK- GALAXY, DISK, SPIRAL RA=00H38M5.7600S +/- 1.0", J2000 V = 19.0 +/- 0.5 V-I=1.0+/-0.5 20KPC DEC=+40D05'35.00" +/- 1.0" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 M31-SW-DISK- GALAXY, DISK, SPIRAL RA=00H37M23.7500S +/- 1.0", J2000 V = 19.0 +/- 0.5 V-I=1.0+/-0.5 23KPC DEC=+39D54'0.00" +/- 1.0" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 13018( 3) - 10-Dec-2012 13:24:06 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.265 Line_Spacing 0.187 Coordinate_Frame POS-TARG Pattern_Orient 20.67 Angle_Between_Sides 69.05 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.150 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 34.13 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE ACS-WFC-DITHER-LINE Pattern_Purpose DITHER DITHER Number_Of_Points 3 2 Point_Spacing 0.138 0.145 Line_Spacing Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 32.99 47.23 Angle_Between_Sides Center_Pattern NO NO ------------------------------------------------------------------------------------------------------------------------------------ 13018( 3) - 10-Dec-2012 13:24:06 - [ 5] Visit: 01 Visit Requirements: SCHED 100%; ORIENT 347D TO 45 D; ORIENT 270D TO 318 D On Hold Comments: Additional Comments: Orientation requirements set by inspection of Herschel dust maps and by avoidance of a bright star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1149 S PATTERN 2 1-2; PAR 2 -20KPC WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 1000 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1245 S POS TARG 0.2629, 0.3034; -20KPC PATTERN 1 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1000 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F606W 1 none none none 1 N/A M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F606W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 1209.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 1159.0 S S M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 1 none none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 2 none none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 3 none none none 3 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 4 none none none 3 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 3 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 4 none none none 3 1255.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 6] Visit: 02 Visit Requirements: SCHED 100%; SAME ORIENT AS 01 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 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1149 S POS TARG -0.5109, -20KPC -0.4218; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1245 S POS TARG 0.1637, -20KPC -0.0720; PATTERN 1 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F606W 1 none none none 1 N/A M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F606W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 1209.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 1159.0 S S M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 1 none none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 2 none none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 3 none none none 3 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F606W 4 none none none 3 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 3 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 4 none none none 3 1255.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 7] Visit: 03 Visit Requirements: SCHED 100%; SAME ORIENT AS 01 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 M31-SW-DISK ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 1149 S PATTERN 2 1-2; PAR 2 -20KPC WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 1245 S POS TARG 0.2629, 0.3034; -20KPC PATTERN 1 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F814W 1 none none none 1 N/A M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F814W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F814W 1 none none none 1 1209.0 S S ANY 2 WFC3/UVI ACCUM UVIS F814W 2 none none none 1 1159.0 S S M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 1 none none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 2 none none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 3 none none none 3 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 4 none none none 3 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W 1 none none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 none none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 3 none none none 3 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 4 none none none 3 1255.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 8] Visit: 04 Visit Requirements: SCHED 100%; SAME ORIENT AS 01 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 M31-SW-DISK ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 1149 S POS TARG -0.5109, -20KPC -0.4218; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F814W 1 1245 S POS TARG 0.1637, -20KPC -0.0720; PATTERN 3 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F814W 1 none none none 1 N/A M31-SW-DISK-20KPC 1 ACS/WFC ACCUM WFC F814W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F814W 1 none none none 1 1209.0 S S ANY 2 WFC3/UVI ACCUM UVIS F814W 2 none none none 1 1159.0 S S M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 1 1 none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 1 2 none none 2 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 2 1 none none 3 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 2 2 none none 3 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 3 1 none none 4 N/A M31-SW-DISK-20KPC 3 ACS/WFC ACCUM WFC F814W 3 2 none none 4 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W 1 1 none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 1 2 none none 2 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 1 none none 3 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 2 none none 3 1255.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 3 1 none none 4 1255.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ ANY 4 WFC3/UVI ACCUM UVIS F814W 3 2 none none 4 1255.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 10] Visit: 05 Visit Requirements: SCHED 100%; ORIENT 106D TO 112 D; ORIENT 146D TO 166 D; ORIENT 198D TO 225 D On Hold Comments: Additional Comments: Orientation requirements set by inspection of Herschel dust maps and by avoidance of a bright star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1145 S PATTERN 2 1-2; PAR 2 -23KPC WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1240 S POS TARG 0.2629, 0.3034; -23KPC PATTERN 1 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F606W 1 none none none 1 N/A M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F606W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 1205.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 1155.0 S S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 1 none none none 2 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 2 none none none 2 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 3 none none none 3 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 4 none none none 3 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 2 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 2 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 3 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 4 none none none 3 1250.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 11] Visit: 06 Visit Requirements: SCHED 100%; SAME ORIENT AS 05 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 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1145 S POS TARG -0.5109, -23KPC -0.4218; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 1240 S POS TARG 0.1637, -23KPC -0.0720; PATTERN 1 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F606W 1 none none none 1 N/A M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F606W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 1205.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 1155.0 S S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 1 none none none 2 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 2 none none none 2 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 3 none none none 3 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F606W 4 none none none 3 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 2 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 2 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 3 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 4 none none none 3 1250.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 12] Visit: 07 Visit Requirements: SCHED 100%; SAME ORIENT AS 05 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 M31-SW-DISK ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 1145 S PATTERN 2 1-2; PAR 2 -23KPC WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 1240 S POS TARG 0.2629, 0.3034; -23KPC PATTERN 1 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F814W 1 none none none 1 N/A M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F814W 2 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F814W 1 none none none 1 1205.0 S S ANY 2 WFC3/UVI ACCUM UVIS F814W 2 none none none 1 1155.0 S S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 1 none none none 2 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 2 none none none 2 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 3 none none none 3 N/A M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 4 none none none 3 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W 1 none none none 2 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 none none none 2 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 3 none none none 3 1250.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 4 none none none 3 1250.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 13] Visit: 08 Visit Requirements: SCHED 100%; SAME ORIENT AS 05 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 M31-SW-DISK ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 1149 S POS TARG -0.5109, -23KPC see below -0.4218; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-SW-DISK ACS/WFC ACCUM WFC F814W 1 1145 S POS TARG 0.1637, -23KPC see below -0.0720; PATTERN 3 3-4; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 1100 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F814W 1 none none none 1 1146.0 S M31-SW-DISK-23KPC 1 ACS/WFC ACCUM WFC F814W 2 none none none 1 1146.0 S ANY 2 WFC3/UVI ACCUM UVIS F814W 1 none none none 1 1219.0 S S ANY 2 WFC3/UVI ACCUM UVIS F814W 2 none none none 1 1159.0 S S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 1 1 none none 2 1243.0 S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 1 2 none none 2 1243.0 S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 2 1 none none 3 1243.0 S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 2 2 none none 3 1243.0 S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 3 1 none none 4 1243.0 S M31-SW-DISK-23KPC 3 ACS/WFC ACCUM WFC F814W 3 2 none none 4 1243.0 S ANY 4 WFC3/UVI ACCUM UVIS F814W 1 1 none none 2 1253.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 1 2 none none 2 1253.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 1 none none 3 1266.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 2 none none 3 1256.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 3 1 none none 4 1266.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 14] 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 | ------------------------------------------------------------------------------------------------------------------------------------ ANY 4 WFC3/UVI ACCUM UVIS F814W 3 2 none none 4 1256.0 S S 13018( 3) - 10-Dec-2012 13:24:06 - [ 15] Summary Form for Proposal 13018 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 106D TO 112 D, ORIENT 146D TO 166 D, ORIENT 198D TO 225 D, ORIENT 270D TO 318 D, ORIENT 347D TO 45 D, PAR 2 WITH 1, PAR 4 WITH 3, PATTERN 1 3-4, PATTERN 2 1-2, PATTERN 3 3-4, POS TARG -0.5109, -0.4218, POS TARG 0.1637, -0.0720, POS TARG 0.2629, 0.3034, SAME ORIENT AS 01, SAME ORIENT AS 05, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ANY, M31-SW-DISK-20KPC, M31-SW-DISK-23KPC ------------------------------------------------------------------------------------------------------------------------------------