0 Assigned ID: 269 ----- Attempting Submission 1 (Thu Apr 09 21:27:02 GMT 2015) ----- HST Phase I Proposal 269 (j2345prop.apt) successfully submitted. Receipt: # 269-1 This is the 3nd resubmission. We have restricted the ORIENT angle to 305-325 degrees to ensure that a nearby foreground star's diffraction spikes will not overlap our target. 1308188978 ----- Attempting Submission 1 (Mon Jul 13 18:33:51 GMT 2015) ----- HST Phase II Proposal 14091 (j2345prop.apt) successfully submitted. Receipt: # 14091-1 ----- Attempting Submission 2 (Thu Jul 23 20:35:38 GMT 2015) ----- HST Phase II Proposal 14091 (j2345prop.apt) successfully submitted. Receipt: # 14091-2 ----- Attempting Submission 3 (Fri Jul 24 17:27:37 GMT 2015) ----- HST Phase II Proposal 14091 (j2345prop.apt) successfully submitted. Receipt: # 14091-3 ----- Attempting Submission 4 (Fri Oct 09 20:23:12 GMT 2015) ----- The radio galaxy 2MASX J23453268-0449256 is an extreme object with unprecedented properties. It is a disk-dominated and unusually massive red spiral with a rotation speed of 430 km/s at r=15 kpc, and its Mpc-scale radio jets are the largest ever found emerging from a spiral host. Ground-based imaging suggests that its central component is a pseudobulge, and its central stellar velocity dispersion is 350 km/s, surprisingly high for a disk-dominated spiral. X-ray observations show indications of radio-mode feedback on the hot gaseous halo on scales of tens of kpc, also extremely unusual for a spiral galaxy environment. This object challenges the conventional wisdom that the hosts of large-scale radio jets are exclusively early-type galaxies. We propose to obtain new WFC3 optical and IR imaging and Gemini GMOS-IFU spectroscopy of J2345. With the new HST imaging, we will carry out definitive bulge/disk decompositions and quantify the bulge structural parameters accurately, essential for understanding the environment of the central black hole powering the radio jets. GMOS IFU data will provide high-quality spatially resolved measurements of the stellar and gas kinematics of the bulge, which will be used to model the mass distribution in this unique system. Together, these observations will enable us to accurately quantify the structure and kinematics of this extreme galaxy and clarify its physical properties and formation history. Our WFC3 observations will be carried out in two UVIS filters, F438W and F814W, and one IR filter, F160W. We will use two orbits for the imaging. The first orbit will be used for F160W and F814W imaging, and the second orbit will be used for F438W. In each filter, we will use a 3-point line dither pattern. For the IR observation, we will use SAMP-SEQ=STEP25 and NSAMP=12, giving a total of 3*199 sec of exposure time. For the UVIS exposures, according to the WFC3 ETC, a post-flash will not be needed for F814W. For F438W we will use a small post-flash in order to help ensure that we achieve at least the recommended 12 e-/pixel, and FLASH=5 is the minimum amount needed in order to reach the recommended background level. After consultation with STSCI staff the observation sequence was designed to fit within a 51-minute visibility period rather than the full duration of the orbital visibility for this target (53 minutes) in order to allow for scheduling windows that would permit acquisition of two guide stars. In this revised Phase II submission, we have restricted the ORIENT angle range to 305-325 degrees. This angle range will ensure that diffraction spikes from a bright foreground star will not overlap our target, while still allowing for suitable guide stars and visit schedulability. The observations were shortened slightly to fit within a 50-minute visibility window in order to allow for feasible scheduling windows. AGN/QUASARS 12 false false false false 0.6 SUPPORTED GALAXY BULGE NLR NUCLEUS RADIO GALAXY SPIRAL YES This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 SDSS r = 14.7 mag WFC3/UVIS Imaging No No F438W WFC3/UVIS Imaging No No F814W WFC3/IR Imaging No No F160W POS-TARG DITHER 0.135 LINE false false 3 46.84 WFC3-UVIS-DITHER-LINE-3PT 3 false POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 4 false 1444415565365 /tmp/OPVisit142073303336230216.xml The scheduling data was generated by CASM 23.2. CASM was run in Phase II mode. 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