11583( 5) - 21-Jul-2008 15:16:33 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11583 Version: 5 Check-in Time: 21-Jul-2008 15:16:33 STScI Edit Number: 3 Title The Star Formation Rate In Nearby Elliptical Galaxies ------------------------------------------------------------------------------------ Type Cycle GO 17 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Joel N. Bregman University of Michigan CoI: Dr. Patrick O. Seitzer University of Michigan N ------------------------------------------------------------------------------------ Abstract Small amounts of star formation in normal elliptical galaxies are suggested by several results: some surprisingly young ages from optical line-index dating; cooling X-ray gas; and mid-IR dust emission. Previously, it was difficult to detect low levels of star formation, but UV imaging with WFPC3 will permit us to conclusively identify individual O/B stars in nearby normal ellipticals by their UV colors and magnitudes. This technique is orders of magnitude more sensitive than previous methods, allowing detections of star formation to levels of 1E-4 Msolar/yr. Proof of concept is provided by a very long UV ACS observation of M87 that revealed many O/B stars. We propose observations of four normal ellipticals where recent star formation is likely. This will yield their star formation rates and the locations of such activity. ------------------------------------------------------------------------------------ Observations Description ------------------------ For each galaxy, we will observe two orbits in F225W (4 dithered exposures per orbit) followed by one orbit in F336W (4 dithered exposures). To check for nova, we will observe after a minimum of 30 days one additional orbit in F336W (4 dithered exposures). To maximize ease of scheduling we will not constrain the roll angle for any observation except that the first 3 orbits on each galaxy must be done at the same pointing. All observations will be in WFPC3/UVIS. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11583( 5) - 21-Jul-2008 15:16:33 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-4697 GALAXY, ELLIPTICAL RA=12H48M35.9000S +/- 0.1", J2000 V = 10.14 +/- 0.14 DEC=-05D48'3.00" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-4636 GALAXY, ELLIPTICAL RA=12H42M49.9000S +/- 0.1", J2000 V = 10.43 +/- 0.1 DEC=+02D41'16.00" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 3 MESSIER-084 GALAXY, ELLIPTICAL RA=12H25M3.7000S +/- 0.1", J2000 V = 10.0 +/- 0.1 DEC=+12D53'13.00" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 4 MESSIER-105 GALAXY, ELLIPTICAL RA=10H47M49.6000S +/- 0.1", J2000 V = 10.0 +/- 0.1 DEC=+12D34'54.00" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 11583( 5) - 21-Jul-2008 15:16:33 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 11583( 5) - 21-Jul-2008 15:16:33 - [ 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-4697 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S PATTERN 1 1-3 S ER ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-4697 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-4697 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 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-4697 1 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER NGC-4697 1 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 1 N/A S TER NGC-4697 1 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER NGC-4697 1 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER NGC-4697 2 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER NGC-4697 2 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 2 N/A S TER NGC-4697 2 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER NGC-4697 2 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER NGC-4697 3 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC-4697 3 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 N/A S TER NGC-4697 3 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 N/A S TER NGC-4697 3 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 3 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 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-4636 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S PATTERN 1 1-3 S ER ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-4636 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-4636 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 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-4636 1 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER NGC-4636 1 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 1 N/A S TER NGC-4636 1 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER NGC-4636 1 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER NGC-4636 2 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER NGC-4636 2 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 2 N/A S TER NGC-4636 2 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER NGC-4636 2 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER NGC-4636 3 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC-4636 3 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 N/A S TER NGC-4636 3 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 N/A S TER NGC-4636 3 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 3 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 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 MESSIER-084 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S GS ACQ SCENARIO SINGLE; S ER PATTERN 1 1-3 ------------------------------------------------------------------------------------------------------------------------------------ 2 MESSIER-084 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 3 MESSIER-084 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 1 N/A S TER MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER MESSIER-084 2 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER MESSIER-084 2 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 2 N/A S TER MESSIER-084 2 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER MESSIER-084 2 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER MESSIER-084 3 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER MESSIER-084 3 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 N/A S TER MESSIER-084 3 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 N/A S TER MESSIER-084 3 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 3 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 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 MESSIER-105 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S PATTERN 1 1-3 S ER ------------------------------------------------------------------------------------------------------------------------------------ 2 MESSIER-105 WFC3/UVI ACCUM UVIS-CENT F225W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 3 MESSIER-105 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S S ER ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 1 N/A S TER MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER MESSIER-105 2 WFC3/UVI ACCUM UVIS-CEN F225W 1 none none none 1 N/A S TER MESSIER-105 2 WFC3/UVI ACCUM UVIS-CEN F225W 2 none none none 2 N/A S TER MESSIER-105 2 WFC3/UVI ACCUM UVIS-CEN F225W 3 none none none 2 N/A S TER MESSIER-105 2 WFC3/UVI ACCUM UVIS-CEN F225W 4 none none none 3 N/A S TER MESSIER-105 3 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER MESSIER-105 3 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 N/A S TER MESSIER-105 3 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 N/A S TER MESSIER-105 3 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 3 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 8] Visit: 21 Visit Requirements: AFTER 01 BY 21 D TO 180 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-4697 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S PATTERN 1 1 S ER ------------------------------------------------------------------------------------------------------------------------------------ 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-4697 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC-4697 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC-4697 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC-4697 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 9] Visit: 22 Visit Requirements: AFTER 02 BY 21 D TO 180 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-4636 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S PATTERN 1 1 S ER ------------------------------------------------------------------------------------------------------------------------------------ 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-4636 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC-4636 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC-4636 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC-4636 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 10] Visit: 23 Visit Requirements: AFTER 03 BY 21 D TO 180 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 MESSIER-084 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S GS ACQ SCENARIO SINGLE; S ER PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER MESSIER-084 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 11] Visit: 24 Visit Requirements: AFTER 04 BY 21 D TO 180 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 MESSIER-105 WFC3/UVI ACCUM UVIS-CENT F336W CR-SPLIT=NO 1 600 S PATTERN 1 1 S ER ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER MESSIER-105 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 11583( 5) - 21-Jul-2008 15:16:33 - [ 12] Summary Form for Proposal 11583 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 21 D TO 180 D, AFTER 02 BY 21 D TO 180 D, AFTER 03 BY 21 D TO 180 D, AFTER 04 BY 21 D TO 180 D, GS ACQ SCENARIO SINGLE, PATTERN 1 1, PATTERN 1 1-3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F225W, F336W ------------------------------------------------------------------------------------------------------------------------------------ Target Names MESSIER-084, MESSIER-105, NGC-4636, NGC-4697 ------------------------------------------------------------------------------------------------------------------------------------