12526( 3) - 04-Oct-2011 10:34:36 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12526 Version: 3 Check-in Time: 04-Oct-2011 10:34:36 STScI Edit Number: 0 Title Mapping Recent Star Formation and Dust in NGC 1266, a Local Example of AGN-driven Feedback ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Ms. Katherine Anne Alatalo University of California - Berkeley CoI: Dr. Genevieve J. Graves University of California - Berkeley N CoI: Dr. Susana E. Deustua Space Telescope Science Institute N CoI: Ms. Kristina Erica Nyland New Mexico Institute of Mining and N Technology CoI: Dr. Carl E. Heiles University of California - Berkeley N CoI: Mr. Timothy Andrew Davis University of Oxford N CoI: Dr. Lisa Young New Mexico Institute of Mining and N Technology CoI: Dr. Martin Bureau University of Oxford N CoI: Dr. Richard McDermid Gemini Observatory, Northern Operations N CoI: Dr. Eric Emsellem European Southern Observatory - Germany N CoI: Dr. Davor Krajnovic European Southern Observatory - Germany N CoI: Dr. Michele Cappellari University of Oxford N ------------------------------------------------------------------------------------ Abstract NGC 1266 is a nearby lenticular galaxy with a unique property: it hosts a massive outflow of molecular gas. This outflow appears to be driven by an AGN. AGN feedback may play an important role in galaxy evolution, particularly as a star formation quenching mechanism, but the details are not well understood. At only 30 Mpc away, NGC 1266 presents the best local laboratory for studying the AGN feedback process in action. A large multi-wavelength data set already exists, including high resolution X-ray imaging and radio observations, as well as resolved stellar kinematics from integral field unit data. The existing ground-based optical imaging shows hints of a dust cone along the direction of the outflow, and possibly indications of a recent minor merger, which may have triggered the current outflow and AGN activity. However, the images are of modest resolution, significantly worse than the resolution necessary to provide information about the star formation history and dust distribution associated with the outflow. This proposal aims to acquire high resolution optical, near-infrared, and NUV imaging using ACS/WFC, WFC3/IR, and WFC3/UVIS. The primary goals are to resolve the sites of recent star formation, create multi-stellar population models on the same scale as the molecular gas features (> 1"), to map the detailed dust morphology and properties, and to further constrain the total mass of outflowing material. ------------------------------------------------------------------------------------ Observations Description ------------------------ NGC 1266 will be observed isng WFC3 and ACS The near UV image uses the WFC3 UVIS channel with the F225W filter, with which we can detect the presence of young, hot stars. We estimate the time to obtain 12526( 3) - 04-Oct-2011 10:34:36 - [ 2] a S/N ? 3 per PSF based on the GALEX NUV photometry. If the NUV flux is smoothly distributed, then 2700 seconds is required to achieve the minimum S/N. However, if the NUV flux is produced in clumps then the S/N in the same exposure time will be higher. This will map the presence of young stars at ? 30 pc metric resolution to high significance. The orbit will be split into at least four dithered sub-exposures to facilitate cosmic ray subtraction and to remove hot pixels or bad columns and avoid the effect of the droplets. The resulting NUV image will locate regions with recent star formation within the galaxy. 1 orbit for the NUV image. Deep near infrared images will be obtained with the WFC3 IR channel using the broad band F110W, F140W and F160W filters. Exposure times of Å 500 seconds yield a S/N per pixel of ? 90 for a flux density of 20 mag/sq. arcsec. Exposures are dithered to avoid bad/hot pixels, skip over the Òblobs, Ó and minimize persistence. 1 orbit for WFC3/IR images. The single orbit in ACS/WFC will be divided between three optical filters: F435W (Johnson B), F555W (Johnson V), and F814W (Broad I). The exposure time will be divided between them so as to achieve roughly equal S/N per pixel in each filter. Exposures of 1800 seconds in F435W, 500 seconds in F555W, and 140 seconds in F814W will produce a S/N ? 15 per pixel in each of the three filters. As with the UVIS orbit, these exposures will be split into dithered sub-exposures to avoid cosmic rays, hot pixels, and bad columns. 1 orbit for optical imaging. The multi-band imaging will allow us to map the stellar morphology of the galaxy, as well as the detailed dust distribution both in the center of the galaxy and out near one effective radius. The diameter of NGC 1266 (D25 = 90??) will fill most of the field of view of both instruments. The galaxy will be positioned off-center on each detector to avoid placing the critical central region of the galaxy over the gap between CCDs. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12526( 3) - 04-Oct-2011 10:34:36 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-1266 GALAXY, BAR, SEYFERT, RA=03H16M0.7488S +/- 0.1", J2000 V = 12.5 SPIRAL DEC=-02D25'38.50" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 12526( 3) - 04-Oct-2011 10:34:36 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BLOB Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 5.183 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.859 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 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 ------------------------------------------------------------------------------------------------------------------------------------ 12526( 3) - 04-Oct-2011 10:34:36 - [ 5] 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-1266 WFC3/UVI ACCUM UVIS F225W 1 875 S PATTERN 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 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-1266 1 WFC3/UVI ACCUM UVIS F225W 1 none none none 1 N/A S NGC-1266 1 WFC3/UVI ACCUM UVIS F225W 2 none none none 1 N/A S NGC-1266 1 WFC3/UVI ACCUM UVIS F225W 3 none none none 1 N/A S 12526( 3) - 04-Oct-2011 10:34:36 - [ 6] 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-1266 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 1-3 CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-1266 WFC3/IR MULTIAC IR F140W NSAMP=14, SAMP-SEQ=STEP50 1 DEF CUM ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-1266 WFC3/IR MULTIAC IR F110W SAMP-SEQ=STEP50, NSAMP=13 1 DEF CUM ------------------------------------------------------------------------------------------------------------------------------------ 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-1266 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM NGC-1266 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM NGC-1266 2 WFC3/IR MULTIAC IR F140W 1 none none none 1 N/A CUM NGC-1266 2 WFC3/IR MULTIAC IR F140W 2 none none none 1 N/A CUM NGC-1266 3 WFC3/IR MULTIAC IR F110W 1 none none none 1 N/A CUM NGC-1266 3 WFC3/IR MULTIAC IR F110W 2 none none none 1 N/A CUM 12526( 3) - 04-Oct-2011 10:34:36 - [ 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-1266 ACS/WFC ACCUM WFC F814W 1 135 S ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-1266 ACS/WFC ACCUM WFC F435W 1 560 S PATTERN 3 2-3 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-1266 ACS/WFC ACCUM WFC F555W 1 339 S ------------------------------------------------------------------------------------------------------------------------------------ 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-1266 1 ACS/WFC ACCUM WFC F814W none none none none 1 N/A NGC-1266 2 ACS/WFC ACCUM WFC F435W 1 none none none 1 N/A NGC-1266 2 ACS/WFC ACCUM WFC F435W 2 none none none 1 N/A NGC-1266 3 ACS/WFC ACCUM WFC F555W 1 none none none 1 N/A NGC-1266 3 ACS/WFC ACCUM WFC F555W 2 none none none 1 N/A 12526( 3) - 04-Oct-2011 10:34:36 - [ 8] Summary Form for Proposal 12526 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, UVIS, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=13, NSAMP=14, SAMP-SEQ=STEP50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 2 1-3, PATTERN 3 2-3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F110W, F140W, F160W, F225W, F435W, F555W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-1266 ------------------------------------------------------------------------------------------------------------------------------------