14715( 3) - 30-Aug-2016 13:19:18 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14715 Version: 3 Check-in Time: 30-Aug-2016 13:19:18 STScI Edit Number: 0 Title Watching AGN feedback at its birth: HST observations of nascent outflow host IC860 ------------------------------------------------------------------------------------ Type Cycle GO 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Katherine Anne Alatalo Carnegie Institution of Washington Y CoI: Dr. Susana E. Deustua Space Telescope Science Institute N CoI: Dr. Philip N. Appleton California Institute of Technology N CoI: Dr. Lee Armus California Institute of Technology N CoI: Dr. Sabrina Cales Yale University N CoI: Dr. Lisa Kewley Australian National University N CoI: Dr. Mark D. Lacy Associated Universities, Inc. N CoI: Dr. Lauranne Lanz California Institute of Technology N CoI: Ute Lisendfeld Universidad de Granada N CoI: Dr. Anne Medling California Institute of Technology N CoI: Dr. Kristina Erica Nyland New Mexico Institute of Mining and N Technology CoI: Dr. Jeffrey Austin Sterling Rich California Institute of Technology N Jr. CoI: Dr. John S. Mulchaey Carnegie Institution of Washington N CoI: Prof. Claudia Megan Urry Yale University N CoI: Prof. John S. Gallagher III University of Wisconsin - Madison N CoI: Prof. Susanne Aalto Chalmers University of Technology N CoI: Dr. Jennifer Lotz Space Telescope Science Institute N CoI: Dr. Joel Roediger Dominion Astrophysical Observatory N CoI: Dr. Jesus Falcon Barroso Instituto de Astrofisica de Canarias N CoI: Dr. Francesco Costagliola Chalmers University of Technology N ------------------------------------------------------------------------------------ Abstract IC860 is a nearby IR-luminous early-type spiral with a unique set of properties: it is a shocked, poststarburst galaxy that hosts an AGN-driven neutral wind and a compact core of molecular gas. IC860 can serve as a rosetta stone for the early stages of triggering AGN feedback. We propose to use WFC3 on HST to obtain NUV, optical and near-IR imaging of IC860. We will create a spatially-resolved history of star formation quenching through SED-fitting of 7 requested broadband filters, and compare the spatially resolved star formation histories to in different positions within the underlying stellar features (such as spiral structure) that might define a narrative of how star formation is quenching in IC860. These observations will also resolve the super-star cluster sites to trace the most recent star formation. Finally, these observations will trace the mass of the outflow by building an absorption map of the dust. IC860 presents a unique opportunity to study a galaxy at an early stage of transitioning from blue spiral to red early-type galaxy, that also hosts an AGN-driven neutral wind and a compact, turbulent molecular gas core. ------------------------------------------------------------------------------------ Observations Description ------------------------ 14715( 3) - 30-Aug-2016 13:19:18 - [ 2] We propose to obtain deep, high resolution NUV, optical, and near-IR imaging of IC 860. The multi-band imaging will allow us to map the stellar morphology of the galaxy, as well as the de- tailed dust distribution both in the center of the galaxy and out near one effective radius, with resolution of at least 0.200 (50pc), and a field-of-view of 10000, which is able to image IC860 in a single pointing (see Fig. 3). All exposures are dithered to avoid bad/hot pixels, skip over the "blobs, " and minimize persistence. This proposal requests a total of 4 orbits. Basic data for IC 860: GALEX NUV: 18.35 AB mag SDSS u0: 15.682 mag SDSS g: 14.024 mag SDSS r: 13.355 mag SDSS i: 12.774 mag J20 2MASS: 11.671 mag H20 2MASS: 10.923 mag K20 2MASS: 10.683 mag The near UV image uses the WFC3 UVIS channel with the F275W filter, with which we can detect the presence of young, hot stars. We estimate the time to obtain a S/N~10 per PSF based on the GALEX NUV photometry. If the NUV flux is smoothly distributed, then 5000 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 ~20 pc resolution to high significance (assuming WFC3/NUV resolution of 0.0800). 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, and will use FLASH to raise the background to 12-15 e/pix. The resulting NUV image will locate regions with recent star formation within the galaxy. 2 orbits for the NUV image. We derived exposure times assuming a flux density using the 3000-4000 spectrum from Moustakas & Kennicutt (2006) of 10^17 ergs s1 cm2 A^-1 sq. arcsec^-1. We request one orbit using the WFC3/UVIS F336W (U) filter, then one orbit will be split between WFC3/UVIS F438W (B), F606W (V), and F814W (I) and WFC3/IR F140W (J) and F160W (H) filters. The exposure time will be divided between them so as to achieve roughly equal S/N per pixel in each filter. Exposures of 2000 seconds in F336W, 500 seconds in F438W, 350 seconds in F606W, and 500 seconds in F814W, and ~300 seconds (the minimum exposure, for the same reasons given above) for F140W and F160W, will produce a S/N~20 per pixel in each of the filters. 1 orbit for WFC3/UVIS U ------------------------------------------------------------------------------------ 14715( 3) - 30-Aug-2016 13:19:18 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 IC-0860 GALAXY, SPIRAL RA=13H15M3.5280S, J2000 V = 14.024 DEC=+24D37'7.93" Reference Frame: Other: NED Extended: YES Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 14715( 3) - 30-Aug-2016 13:19:18 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 4 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-GAP-LINE Pattern_Purpose MOSAIC Number_Of_Points 2 Point_Spacing 2.414 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.759 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 5 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 ------------------------------------------------------------------------------------------------------------------------------------ 14715( 3) - 30-Aug-2016 13:19:18 - [ 5] Visit: 01 (NUV) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IC-0860 WFC3/UVI ACCUM UVIS2 F438W FLASH=11 1 300 S (600 PATTERN 4 1-3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IC-0860 WFC3/UVI ACCUM UVIS2 F275W FLASH=11.0 1 1250 S S (2500 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IC-0860 WFC3/UVI ACCUM UVIS2 F336W FLASH=9 1 1000 S S (2000 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IC-0860 WFC3/UVI ACCUM UVIS2 F275W FLASH=11.0 1 1200 S POS TARG -0.05, +0.1; S (2400 S) PATTERN 4 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 IC-0860 WFC3/IR MULTIAC IR-FIX F140W NSAMP=9, SAMP-SEQ=SPARS25 1 DEF POS TARG -2.17, -1.945 CUM (202.936 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 | ------------------------------------------------------------------------------------------------------------------------------------ IC-0860 1 WFC3/UVI ACCUM UVIS2 F438W 1 none none none 1 N/A S IC-0860 1 WFC3/UVI ACCUM UVIS2 F438W 2 none none none 2 N/A S IC-0860 2 WFC3/UVI ACCUM UVIS2 F275W 1 none none none 1 N/A S IC-0860 2 WFC3/UVI ACCUM UVIS2 F275W 2 none none none 2 N/A S IC-0860 3 WFC3/UVI ACCUM UVIS2 F336W 1 none none none 1 N/A S IC-0860 3 WFC3/UVI ACCUM UVIS2 F336W 2 none none none 2 N/A S IC-0860 4 WFC3/UVI ACCUM UVIS2 F275W 1 none none none 3 N/A S IC-0860 4 WFC3/UVI ACCUM UVIS2 F275W 2 none none none 3 N/A S IC-0860 5 WFC3/IR MULTIAC IR-FIX F140W none none none none 3 N/A CUM 14715( 3) - 30-Aug-2016 13:19:18 - [ 6] Visit: 02 (Vis+IR) 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IC-0860 WFC3/IR MULTIAC IR-FIX F140W NSAMP=9, SAMP-SEQ=SPARS25 1 DEF POS TARG 2.17, 1.945 CUM (202.936 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IC-0860 WFC3/IR MULTIAC IR-FIX F160W NSAMP=9, SAMP-SEQ=SPARS25 1 DEF PATTERN 5 2 CUM (405.873 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IC-0860 WFC3/UVI ACCUM UVIS2 F606W 1 400 S (800 PATTERN 4 3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IC-0860 WFC3/UVI ACCUM UVIS2 F814W FLASH=6 1 375 S (750 PATTERN 4 4 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ IC-0860 1 WFC3/IR MULTIAC IR-FIX F140W none none none none 1 N/A CUM IC-0860 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM IC-0860 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM IC-0860 3 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S IC-0860 3 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S IC-0860 4 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S IC-0860 4 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 14715( 3) - 30-Aug-2016 13:19:18 - [ 7] Summary Form for Proposal 14715 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX, UVIS2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=11, FLASH=11.0, FLASH=6, FLASH=9, NSAMP=9, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 4 1-3, PATTERN 4 3, PATTERN 4 4, PATTERN 5 2, POS TARG -0.05, +0.1, POS TARG -2.17, -1.945, POS TARG 2.17, 1.945 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F140W, F160W, F275W, F336W, F438W, F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names IC-0860 ------------------------------------------------------------------------------------------------------------------------------------