15915( 3) - 24-Jan-2020 19:45:26 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15915 Version: 3 Check-in Time: 24-Jan-2020 19:45:26 STScI Edit Number: 0 Title AGN Feedback in Dwarf Galaxies ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Mr. Weizhe Liu University of Maryland Y CoI: Prof. Sylvain Veilleux University of Maryland N CoI: Prof. Todd M. Tripp University of Massachusetts - Amherst N CoI: Prof. Fred Hamann University of California - Riverside N CoI: Prof. David Rupke Rhodes College N CoI: Prof. Gabriela Canalizo University of California - Riverside N CoI: Ms. Christina Manzano King University of California - Riverside N CoI: Prof. Laura Virginia Sales University of California - Riverside N ------------------------------------------------------------------------------------ Abstract Feedback processes play a vital role in the evolution of dwarf galaxies. While the stellar processes are believed to be the dominant source of feedback in dwarf galaxies, it is still under debate whether stellar feedback can reproduce all the properties of the dwarf galaxies we see today. There is growing evidence, both observational and theoretical, that feedback from active galactic nuclei (AGN) may also contribute to the evolution of dwarf galaxies. Indeed, recent Keck optical observations have revealed large-scale (reaching beyond the half-light radii) and fast (broad [OIII] linewidths up to 2000 km/s) outflows in a sample of dwarf galaxies with AGN. Remarkably, only one dwarf galaxy with an AGN (NGC 4395) has been examined so far in the rest-frame far-ultraviolet (FUV). So here we propose to conduct COS/FUV spectroscopy on the three dwarf galaxies with the fastest AGN outflows based on the optical data. The FUV band is rich in spectroscopic diagnostics of the neutral, low-ionization, and high-ionization gas phases. COS will thus allow us to quantify the kinematics, column densities, and energetics of all three gas phases at once. These results will be compared with the optical properties of these outflows, as well as with the vast literature on galactic winds in pure star-forming dwarf galaxies, to help us evaluate the impact of AGN feedback on dwarf galaxies and their environments. ------------------------------------------------------------------------------------ Observations Description ------------------------ We were allocated 17 orbits to observe 3 targets with COS G160M with cenwave =1533 A. For each of the two brighter targets, the allocated 5 orbits are split into two visits of 2 orbits and 3 orbits respectively. This follows the recommendation by the Cycle 27 Phase II Proposal Instructions that visits of 2 or 3 orbits are easier for scheduling. For the faintest target, the 7 orbits allocated are split into two visits of 3 orbits and 4 orbits respectively. Splitting the 7 orbits into three visits will significantly increase the overheads and is thus not optimal given the faintness of the target. For each visit, we first use ACQ/IMAGE to obtain a NUV image of the field and 15915( 3) - 24-Jan-2020 19:45:26 - [ 2] center the aperture on the intensity peak. For this procedure, we make use of MIRRORA for all of the targets. All of the targets are safe to observe and there is no BOT warning. The exposure times are generous to make sure that S/N > 20. The spectroscopic exposures are set with different FP-POS values in each orbit to reduce the fixed pattern noise. We get all four FP-POS settings for all targets. All of the observations are done in TIME-TAG mode. This temporal sampling will allow us to exclude poor quality data and get improved thermal correction and background removal. High-ionization lines from C IV, Si IV, and weaker low-ionization lines from Si II and C II fit within the wavelength coverage of the data. All of the observation set-ups follow the COS 2025 policy (Table 2.1 of COS Handbook). For simplicity and to guard against the (unlikely) possibility that our targets are more than ~50% brighter than expected, we set buffer-time = exposure-time. To our knowledge, there is no impact from the possible reduced-gyro operations except the scheduling of the observations. ------------------------------------------------------------------------------------ 15915( 3) - 24-Jan-2020 19:45:26 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ090613. GALAXY, DWARF COMPACT, RA=09H06M13.7661S +/- 0.2", J2000 Z = V = 17.67 m(FUV) = 20.01 (AB) 75+561015.5 WIND DEC=+56D10'15.23" +/- 0.2" 0.047 Reference Frame: ICRS Extended: NO ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ095418. GALAXY, DWARF COMPACT, RA=09H54M18.1543S +/- 0.2", J2000 Z = V = 17.33 m(FUV) = 20.47 (AB) 16+471725.1 WIND DEC=+47D17'25.11" +/- 0.2" 0.033 Reference Frame: ICRS Extended: NO ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ100935. GALAXY, DWARF COMPACT, RA=10H09M35.6633S +/- 0.2", J2000 Z = V = 16.46 m(FUV) = 19.94 (AB) 66+265648.9 WIND DEC=+26D56'48.99" +/- 0.2" 0.014 Reference Frame: ICRS Extended: NO ------------------------------------------------------------------------------------------------------------------------------------ 15915( 3) - 24-Jan-2020 19:45:26 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ090613 COS/NUV ACQ/IMA PSA MIRRORA 1 120 S (120 .75+561015. GE S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ090613 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2391, FLASH=YES, 1 2391 S .75+561015. G FP-POS=1, SEGMENT=BOTH (2391 S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ090613 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=3023, FLASH=YES, 1 3023 S .75+561015. G FP-POS=2, SEGMENT=BOTH (3023 S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ090613.75+5610 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 15.5 GE SDSSJ090613.75+5610 2 COS/FUV TIME-TA PSA G160M 1533 none none none none 1 N/A 15.5 G SDSSJ090613.75+5610 3 COS/FUV TIME-TA PSA G160M 1533 none none none none 2 N/A 15.5 G 15915( 3) - 24-Jan-2020 19:45:26 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ090613 COS/NUV ACQ/IMA PSA MIRRORA 1 120 S (120 .75+561015. GE S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ090613 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2391, FLASH=YES, 1 2391 S .75+561015. G FP-POS=1, SEGMENT=BOTH (2391 S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ090613 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=3023, FLASH=YES, 1 3023 S .75+561015. G FP-POS=3, SEGMENT=BOTH (3023 S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ090613 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=3023, FLASH=YES, 1 3023 S .75+561015. G FP-POS=4, SEGMENT=BOTH (3023 S) 5 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ090613.75+5610 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 15.5 GE SDSSJ090613.75+5610 2 COS/FUV TIME-TA PSA G160M 1533 none none none none 1 N/A 15.5 G SDSSJ090613.75+5610 3 COS/FUV TIME-TA PSA G160M 1533 none none none none 2 N/A 15.5 G SDSSJ090613.75+5610 4 COS/FUV TIME-TA PSA G160M 1533 none none none none 3 N/A 15.5 G 15915( 3) - 24-Jan-2020 19:45:26 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ095418 COS/NUV ACQ/IMA PSA MIRRORA 1 90 S (90 .16+471725. GE S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2347, FLASH=YES, 1 2347 S .16+471725. G FP-POS=1, SEGMENT=BOTH (2347 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2919, FLASH=YES, 1 2919 S .16+471725. G FP-POS=2, SEGMENT=BOTH (2919 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2919, FLASH=YES, 1 2919 S .16+471725. G FP-POS=3, SEGMENT=BOTH (2919 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2919, FLASH=YES, 1 2919 S .16+471725. G FP-POS=4, SEGMENT=BOTH (2919 S) 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ095418.16+4717 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 25.1 GE SDSSJ095418.16+4717 2 COS/FUV TIME-TA PSA G160M 1533 none none none none 1 N/A 25.1 G SDSSJ095418.16+4717 3 COS/FUV TIME-TA PSA G160M 1533 none none none none 2 N/A 25.1 G SDSSJ095418.16+4717 4 COS/FUV TIME-TA PSA G160M 1533 none none none none 3 N/A 25.1 G SDSSJ095418.16+4717 5 COS/FUV TIME-TA PSA G160M 1533 none none none none 4 N/A 25.1 G 15915( 3) - 24-Jan-2020 19:45:26 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ095418 COS/NUV ACQ/IMA PSA MIRRORA 1 90 S (90 .16+471725. GE S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2347, FLASH=YES, 1 2347 S .16+471725. G FP-POS=1, SEGMENT=BOTH (2347 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2919, FLASH=YES, 1 2919 S .16+471725. G FP-POS=3, SEGMENT=BOTH (2919 S) 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ095418 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2919, FLASH=YES, 1 2919 S .16+471725. G FP-POS=4, SEGMENT=BOTH (2919 S) 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ095418.16+4717 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 25.1 GE SDSSJ095418.16+4717 2 COS/FUV TIME-TA PSA G160M 1533 none none none none 1 N/A 25.1 G SDSSJ095418.16+4717 3 COS/FUV TIME-TA PSA G160M 1533 none none none none 2 N/A 25.1 G SDSSJ095418.16+4717 4 COS/FUV TIME-TA PSA G160M 1533 none none none none 3 N/A 25.1 G 15915( 3) - 24-Jan-2020 19:45:26 - [ 8] Visit: 05 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 SDSSJ100935 COS/NUV ACQ/IMA PSA MIRRORA 1 120 S (120 .66+265648. GE S) 9 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ100935 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2167, FLASH=YES, 1 2167 S .66+265648. G FP-POS=1, SEGMENT=BOTH (2167 S) 9 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ100935 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2799, FLASH=YES, 1 2799 S .66+265648. G FP-POS=2, SEGMENT=BOTH (2799 S) 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ100935.66+2656 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 48.9 GE SDSSJ100935.66+2656 2 COS/FUV TIME-TA PSA G160M 1533 none none none none 1 N/A 48.9 G SDSSJ100935.66+2656 3 COS/FUV TIME-TA PSA G160M 1533 none none none none 2 N/A 48.9 G 15915( 3) - 24-Jan-2020 19:45:26 - [ 9] Visit: 06 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 SDSSJ100935 COS/NUV ACQ/IMA PSA MIRRORA 1 120 S (120 .66+265648. GE S) 9 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ100935 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2167, FLASH=YES, 1 2167 S .66+265648. G FP-POS=1, SEGMENT=BOTH (2167 S) 9 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ100935 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2799, FLASH=YES, 1 2799 S .66+265648. G FP-POS=3, SEGMENT=BOTH (2799 S) 9 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ100935 COS/FUV TIME-TA PSA G160M 1533 BUFFER-TIME=2799, FLASH=YES, 1 2799 S .66+265648. G FP-POS=4, SEGMENT=BOTH (2799 S) 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ100935.66+2656 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A 48.9 GE SDSSJ100935.66+2656 2 COS/FUV TIME-TA PSA G160M 1533 none none none none 1 N/A 48.9 G SDSSJ100935.66+2656 3 COS/FUV TIME-TA PSA G160M 1533 none none none none 2 N/A 48.9 G SDSSJ100935.66+2656 4 COS/FUV TIME-TA PSA G160M 1533 none none none none 3 N/A 48.9 G 15915( 3) - 24-Jan-2020 19:45:26 - [ 10] Summary Form for Proposal 15915 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=2167, BUFFER-TIME=2347, BUFFER-TIME=2391, BUFFER-TIME=2799, BUFFER-TIME=2919, BUFFER-TIME=3023, FLASH=YES, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, SEGMENT=BOTH ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G160M, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names SDSSJ090613.75+561015.5, SDSSJ095418.16+471725.1, SDSSJ100935.66+265648.9 ------------------------------------------------------------------------------------------------------------------------------------