0 Assigned ID: 991 ----- Attempting Submission 1 (Fri Apr 08 23:17:58 GMT 2016) ----- HST Phase I Proposal 991 (EA_phaseI_submit.apt) successfully submitted. Receipt: # 991-1 ----- Attempting Submission 2 (Fri Apr 08 23:50:46 GMT 2016) ----- HST Phase I Proposal 991 (EA_phaseI_submit.apt) successfully submitted. Receipt: # 991-2 ----- Attempting Submission 3 (Fri Apr 08 23:58:52 GMT 2016) ----- HST Phase I Proposal 991 (EA_phaseI_submit.apt) successfully submitted. Receipt: # 991-3 As requested, this phase II resubmission has some extra flash (3 to 6 e) added, to match the recommended values of APT. Note that the observations with the extra flash are of extended sources in a sub-array mode, so the number of electrons may be underestimated by APT. But I'm happy to add this, as long as it means we are on the safe side. Thanks and best regards, Sjoert 1619135785 ----- Attempting Submission 1 (Wed Jul 20 15:59:21 GMT 2016) ----- HST Phase II Proposal 14785 (EA_c24_14785_phaseII.apt) successfully submitted. Receipt: # 14785-1 ----- Attempting Submission 2 (Fri Jan 20 23:41:17 GMT 2017) ----- Enhanced rates of tidal disruptions in E+A galaxies: resolving the central dynamics of post-starburst galactic nuclei with HST observations Recent optically selected samples of tidal disruption flares (TDFs) have uncovered an interesting puzzle. In post-starburst galaxies, the observed rate of stellar disruptions is enhanced by 1-2 orders of magnitude. A natural explanation of the enhanced rate is an overdense central stellar cusp, created during the recent starburst. The short relaxation times in these cusps can significantly boost the number of stars that are scattered towards the central supermassive black hole. This scenario has a clear observational signature: a steep surface brightness profile on scale of 1-10 pc. Archival HST/WFC3 imaging of the low-redshift post-starburst galaxy NGC 3156 confirms this signature. Our dynamical analysis of the surface brightness profile suggests this galaxy could be a true TDE factory, with stellar disruptions occurring as often as once per millennium. Clearly, observations of more galaxies are needed to improve the significance of this result. Using a recently compiled catalog of post-starburst galaxies, we have found four galaxies that allow for an improved measurement of the TDE rate compared to work on NGC 3156. We propose multi-band HST/WFC3 imaging of these targets. These observations provide the only method to directly measure the TDE rate from the surface brightness profile of post-starburst galaxies and will therefore critically test the overdensity hypothesis. The targets of this proposal are four galaxies. Their sizes are of 5" to 10". Our primary goal is measuring the slope of the surface brightness profile of the innermost pixels. For each target, we will observe with four filters: F225W, F475W, F625W, and F814W (NUV, g, r, and I, respectively). We use two orbits per target. We aim for high-resolution imaging in the F475W and F625W bands. For these bands we use a 4-point dither. To obtain an empirical model of the PSF, we plan to observe a nearby reference star at approximately the same pixel location as the center of the galaxy. The reference stars have been selected to have a similar color as the galaxy and are within a 1 arcmin of target, hence they can be observed without switching and re-acquiring guide stars. To account for breathing of the secondary mirror, we placed the observations of the reference star in the orbit following (or preceding) the science target and at a similar orbital phase as the mid-point of science target observations. For the outer bands (F225W and F814W), we have less stringent requirements on the angular resolution. We therefore use a 2-point dither and no extra observations of a reference star. To reduce readout overheads, we plan to observe with the 1/4 subarray. We use a 12e flash for the reference star observations. No flash is used for the science targets because they are extended and provide plenty of electrons. The exception is the NUV, where we plan to use a 11e flash. For the reference star observations that are 30 seconds or shorter, we request the use of shutter A (BLADE=A). Massive Black Holes and their Hosts Galaxies 12 false false false false false false SUPPORTED GALAXY NUCLEUS YES This object was generated by the targetselector and retrieved from the SIMBAD database. Coodindates updated to SDSS. SDSS ID: 1237657609113894960 Petro: NUV, g, r, i = 18.86, 14.67, 14.01, 13.72 PSF: g, r, i = 16.13, 15.68, 15.39 PSF: g-r = 0.45 J2000 J2000 CALIBRATION POINT SPREAD FUNCTION NO This object was generated by the targetselector and retrieved from the SIMBAD database. Coodindates updated to SDSS. SDSS ID 1237657609113894951. Star for MCG+08-17-011: g-r = 0.35 J2000 J2000 g=16.44; r=16.09 (AB) GALAXY NUCLEUS YES This object was generated by the targetselector and retrieved from the SIMBAD database. Coodindates updated to SDSS. SDSS ID: 1237661152451035152 Petro: NUV, g, r, i = 19.5, 14.86, 14.17, 13.79 PSF: g, r, i = 16.57, 15.92, 15.58 PSF: g-r = 0.65 J2000 J2000 CALIBRATION POINT SPREAD FUNCTION NO SDSS coordindates. g-r = 0.37 J2000 J2000 g=15.51; r=15.14 (AB) GALAXY NUCLEUS YES This object was generated by the targetselector and retrieved from the SIMBAD database. Coodindates updated to SDSS.SDSS ID: 1237665532244984005 Petro: NUV, g, r, i = 18.9, 15.18, 14.39, 14.00 PSF: g, r, i = 18.17, 17.53, 17.12 PSF: g-r = 0.64 J2000 J2000 CALIBRATION POINT SPREAD FUNCTION NO Coodinates from SDSS. g-r = 0.43 J2000 J2000 g=17.43; r=16.97 (AB) GALAXY NUCLEUS YES This object was generated by the targetselector and retrieved from the SIMBAD database. Coodindates updated to SDSS. SDSS ID: 1237659897784566134 redshift: 0.030 Petro: NUV, g, r, i = 19.68, 15.43, 14.47, 13.97 PSF: g, r, i = 18.22, 17.03, 16.59 PSF: g-r = 1.19 J2000 J2000 CALIBRATION POINT SPREAD FUNCTION NO Coordinates from SDSS. g-r = 0.91 J2000 g=19.06; r=18.15 (AB) WFC3/UVIS Imaging No No F225W WFC3/UVIS Imaging No No F475W WFC3/UVIS Imaging No No F555W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F225W WFC3/UVIS Imaging No No F475W WFC3/UVIS Imaging No No F555W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F225W WFC3/UVIS Imaging No No F475W WFC3/UVIS Imaging No No F555W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F225W WFC3/UVIS Imaging No No F475W WFC3/UVIS Imaging No No F555W WFC3/UVIS Imaging No No F814W POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 2 false POS-TARG DITHER 0.145 LINE false false 2 46.84 WFC3-UVIS-DITHER-LINE 3 false /private/var/folders/66/gcbl87_j2rj5d1c1yf4865h40000gn/T/OPVisit1167016531269614699.xml The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 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CASM was run in Phase II mode. (Tic-Visit :proposal-id 14785 :visit-id "02" :proposal-version -1 :trans-version "20160601" :date "20-Jan-2017 18:23:21.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 356496 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14785 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14785 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3070 :al-overhead-at-end 78 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3403 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14785 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3158 :al-overhead-at-end 79 :internal-dur-at-end 426 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3403 :pcs-gap 0 ) true 2 0 /private/var/folders/66/gcbl87_j2rj5d1c1yf4865h40000gn/T/OPVisit6361285279653810457.xml The scheduling data was generated by CASM 24.2. CASM was run in Phase II mode. 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CASM was run in Phase II mode. (Tic-Visit :proposal-id 14785 :visit-id "04" :proposal-version -1 :trans-version "20160601" :date "20-Jan-2017 18:33:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 356496 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 14785 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 14785 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3122 :al-overhead-at-end 78 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3456 :pcs-gap 0 ) (Tic-Orbit :proposal-id 14785 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3200 :al-overhead-at-end 79 :internal-dur-at-end 426 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3456 :pcs-gap 0 ) true 2 0