17758( 5) - 22-Apr-2025 19:19:09 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17758 Version: 5 Check-in Time: 22-Apr-2025 19:19:09 STScI Edit Number: 0 Title Radio Jet-driven AGN Feedback in Dwarf Galaxies: A Pilot Study ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Weizhe Liu University of Arizona Y CoI: Prof. Sylvain Veilleux University of Maryland N CoI: Prof. David Rupke Rhodes College N CoI: Prof. Gabriela Canalizo University of California - Riverside N CoI: Dr. Richard Mushotzky University of Maryland N CoI: Dr. Huan Li Xidian University N CoI: Dr. Thomas Bohn Hiroshima University N CoI: Archana Aravindan University of California - Riverside N ------------------------------------------------------------------------------------ Abstract It is still under debate whether stellar feedback can effectively shape the evolution of dwarf galaxies as expected. 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, energetic outflows have been discovered in some dwarf galaxies with AGN, which can provide feedback to their dwarf hosts. In addition to such outflow-driven feedback, radio jet-driven feedback is the other one of the two fundamental forms of AGN feedback. Radio jet is also deemed an important mechanism for the launch of some powerful outflows. A close examination of the radio jet-related feedback is essential for a more comprehensive understanding of AGN feedback in dwarf galaxies. So here we propose to map the [O III]-emitting gas and examine radio jet-driven feedback and its relation to the rapid outflow in a dwarf galaxy with the most extended radio jet known in such systems, using high spatial resolution (~50 pc) ACS imaging and STIS long-slit spectroscopy. Our main objectives are: (1) characterize the role of the radio jet in driving the outflow; (2) examine the interaction between the radio jet and the interstellar medium; (3) obtain the dynamics of the outflow; (4) evaluate the overall impact from the radio jet and the outflow on the evolution of dwarf galaxies. ------------------------------------------------------------------------------------ Observations Description ------------------------ Imaging: We will obtain a high-S/N ACS/WFC FR505N narrow band image for [O iii] 4959, 5007 and an ACS/WFC F550M medium band image for the continuum on the red side of the [O iii] line. The FR505N filter is centered on 5150 A to put the redshifted [O iii] doublet in the high throughput window of the filter. The exposure time of the FR505N observation is calculated based on the best-fit [O iii] 4959, 5007 doublet model to the Keck/KCWI spectrum extracted from a spaxel 0.5 away from the galaxy center (where the observed radio jet ends). The exposure time of the F550M observation is calculated based on the SDSS spectrum scaled to the flux level of the Keck/KCWI spectrum used above instead, since the Keck/KCWI spectrum does not cover the correct wavelength range. A target 17758( 5) - 22-Apr-2025 19:19:09 - [ 2] S/N of 30 for both observations will be adequate for a good quality [O iii] emission line-only map. The final exposure time requested are 2435 s and 635 s, respectively, and the two observations will be obtained in the same orbit. Spectroscopy: We will also carry out STIS/G430M (4950-5236 A) and STIS/G750M (6482-7054 A) long-slit spectroscopy along the radio jet (see Fig. 3 of proposal for a sketch). The gratings are chosen to ensure a good spectral resolution (FWHM ~50 km/s) to fully resolve the emission line profiles (with overall FWHM of 100-200 km/s). The slit size is chosen to be 52'' X 0.2'', with the slit width comparable to the radio jet. The slit will be centered on the flux peak of the VLA continuum image. The exposure time is calculated based on the same Keck/KCWI spectrum 0.5'' away from the galaxy center and the SDSS spectrum scaled to the flux level of the Keck/KCWI spectrum for the G430M and G750M gratings, respectively. Based on our experience, the target S/N are ~4 per spatial pixel per spectral resolution element at the observed wavelength of Hbeta and [O i] 6300 emission line for the two gratings, respectively. The Hbeta and [O i] 6300 are the faintest lines we aim to observe in each grating, and the requested ex- posure time will thus allow for robust detections and decomposition of all optical emission lines required to fulfill our science goals. A spatial binning of 1 is chosen to keep the finest spatial resolution. The final exposure time requested is ~9620s (or 3 orbits adopting anorbital visibility of 55 min) for each grating. Target Acquisition: for the spectroscopy, we will use the standard STIS ACQ method for an extended source with aperture F28X50LP, Gain=4, frame=1 and a spectrum template of Seyfert 2 NGC 1068 scaled to the r-band surface brightness of our target, 17.1 mag. arcsec^-2. ------------------------------------------------------------------------------------ 17758( 5) - 22-Apr-2025 19:19:09 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 J0954+4717 GALAXY, SEYFERT RA=09H54M18.2150S +/- 0.2", J2000 V = 16.7 DEC=+47D17'24.92" +/- 0.2" Reference Frame: ICRS Extended: YES Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 1.0118828057920067E-4 0.00148 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 17758( 5) - 22-Apr-2025 19:19:09 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 5 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.145 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.29 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 17758( 5) - 22-Apr-2025 19:19:09 - [ 5] Visit: 01 (imaging) 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 J0954+4717 ACS/WFC ACCUM WFC1B-1K F550M 1 475 S PATTERN 5 1 see below (400 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0954+4717 ACS/WFC ACCUM WFC1-MRAM FR505N 5150 1 1820 S P see below (818 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J0954+4717 ACS/WFC ACCUM WFC1-MRAM FR505N 5150 1 1820 S POS TARG 0.247, 0.094 P see below (817 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0954+4717 1 ACS/WFC ACCUM WFC1B-1K F550M 1 none none none 1 200 S J0954+4717 1 ACS/WFC ACCUM WFC1B-1K F550M 2 none none none 1 200 S J0954+4717 2 ACS/WFC ACCUM WFC1-MRA FR505N 5150 none none none none 1 818.0 S MP J0954+4717 3 ACS/WFC ACCUM WFC1-MRA FR505N 5150 none none none none 1 817.0 S MP 17758( 5) - 22-Apr-2025 19:19:09 - [ 6] Visit: 02 (Long-slit, G430M) Visit Requirements: ORIENT 311D TO 313 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 J0954+4717 STIS/CCD ACQ F28X50LP MIRROR 1 60 S (60 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0954+4717 STIS/CCD ACCUM 52X0.2E1 G430M 5093 1 1924 S (1924 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 J0954+4717 STIS/CCD ACCUM 52X0.2E1 G430M 5093 1 2510 S POS TARG 0, -0.2285 (2510 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J0954+4717 STIS/CCD ACCUM 52X0.2E1 G430M 5093 1 2486 S POS TARG 0, -0.3808 (2486 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0954+4717 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J0954+4717 2 STIS/CCD ACCUM 52X0.2E1 G430M 5093 none none none 1 1 N/A J0954+4717 2 STIS/CCD ACCUM 52X0.2E1 G430M 5093 none none none 2 1 N/A J0954+4717 3 STIS/CCD ACCUM 52X0.2E1 G430M 5093 none none none 1 2 N/A J0954+4717 3 STIS/CCD ACCUM 52X0.2E1 G430M 5093 none none none 2 2 N/A J0954+4717 4 STIS/CCD ACCUM 52X0.2E1 G430M 5093 none none none 1 3 N/A J0954+4717 4 STIS/CCD ACCUM 52X0.2E1 G430M 5093 none none none 2 3 N/A 17758( 5) - 22-Apr-2025 19:19:09 - [ 7] Visit: 03 (Long-slit, G750M) Visit Requirements: SAME ORIENT AS 02 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 J0954+4717 STIS/CCD ACQ F28X50LP MIRROR 1 60 S (60 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0954+4717 STIS/CCD ACCUM 52X0.2E1 G750M 6768 1 1864 S (1864 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CCDFLAT STIS/CCD ACCUM 52X0.2 G750M 6768 2 45 S (90 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 J0954+4717 STIS/CCD ACCUM 52X0.2E1 G750M 6768 1 2506 S POS TARG 0, -0.2285 (2506 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CCDFLAT STIS/CCD ACCUM 52X0.2 G750M 6768 2 45 S (90 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 J0954+4717 STIS/CCD ACCUM 52X0.2E1 G750M 6768 1 2486 S POS TARG 0, -0.3808 (2486 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CCDFLAT STIS/CCD ACCUM 52X0.2 G750M 6768 2 45 S (90 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0954+4717 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A J0954+4717 2 STIS/CCD ACCUM 52X0.2E1 G750M 6768 none none none 1 1 N/A J0954+4717 2 STIS/CCD ACCUM 52X0.2E1 G750M 6768 none none none 2 1 N/A CCDFLAT 3 STIS/CCD ACCUM 52X0.2 G750M 6768 none none 1 none 1 N/A CCDFLAT 3 STIS/CCD ACCUM 52X0.2 G750M 6768 none none 2 none 1 N/A J0954+4717 4 STIS/CCD ACCUM 52X0.2E1 G750M 6768 none none none 1 2 N/A J0954+4717 4 STIS/CCD ACCUM 52X0.2E1 G750M 6768 none none none 2 2 N/A CCDFLAT 5 STIS/CCD ACCUM 52X0.2 G750M 6768 none none 1 none 2 N/A CCDFLAT 5 STIS/CCD ACCUM 52X0.2 G750M 6768 none none 2 none 2 N/A J0954+4717 6 STIS/CCD ACCUM 52X0.2E1 G750M 6768 none none none 1 3 N/A J0954+4717 6 STIS/CCD ACCUM 52X0.2E1 G750M 6768 none none none 2 3 N/A CCDFLAT 7 STIS/CCD ACCUM 52X0.2 G750M 6768 none none 1 none 3 N/A CCDFLAT 7 STIS/CCD ACCUM 52X0.2 G750M 6768 none none 2 none 3 N/A 17758( 5) - 22-Apr-2025 19:19:09 - [ 8] Summary Form for Proposal 17758 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.2, 52X0.2E1, F28X50LP, WFC1-MRAMP, WFC1B-1K ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, STIS/CCD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 311D TO 313 D, PATTERN 5 1, POS TARG 0, -0.2285, POS TARG 0, -0.3808, POS TARG 0.247, 0.094, SAME ORIENT AS 02 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F550M, FR505N, G430M, G750M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names CCDFLAT, J0954+4717 ------------------------------------------------------------------------------------------------------------------------------------