0 Assigned ID: 113 ----- Attempting Submission 1 (Wed Apr 09 19:01:53 GMT 2014) ----- HST Phase I Proposal 113 (ngc1275prop.apt) successfully submitted. PATTERN POSITION OUTSIDE APERTURE PATTERN POSITION OUTSIDE APERTURE PATTERN POSITION OUTSIDE APERTURE PATTERN POSITION OUTSIDE APERTURE 0 ----- Attempting Submission 1 (Thu Jul 24 20:34:23 GMT 2014) ----- The only warning is that some STIS observations have POS-TARG moves that place the galaxy nucleus outside the aperture, but that is by design so it should not be considered an error. NGC 1275 is the brightest and most massive galaxy in the Perseus Cluster, and is an excellent laboratory in which to examine the processes of black hole fueling and feedback in a cluster core environment. Our goal is to carry out a direct measurement of the black hole mass in NGC 1275 using ionized gas dynamics, by resolving the H-alpha and [N II] kinematics within the black hole's dynamical sphere of influence. We request five orbits to carry out STIS G750M spectroscopy at five parallel positions of the 0.1 arcsec-wide slit, in order to map the ionized gas kinematics and measure the central mass using the same methods successfully used for other giant ellipticals such as M84 and M87. We will compare the ionized gas kinematics with our observations of the H_2 molecular kinematics recently measured at 0.02-arcsecond sampling with Keck adaptive optics data in order to better understand the interplay between the different components of the ISM in this complex environment. We also request one orbit for WFC3/IR imaging of NGC 1275 in order to measure its near-IR surface brightness profile with unprecedented depth and resolution and model the galaxy's stellar mass profile. The results of this work will provide the first accurate measurement of the black hole mass in this highly unusual brightest cluster galaxy. Together with new and planned Keck AO observations, these HST observations will provide a critical new test of black hole mass measurement techniques by direct comparison of ionized gas dynamics, molecular gas dynamics, and stellar dynamics, and NGC 1275 is a nearly unique example of a galaxy in which all three methods are feasible. Our goal is to map the kinematic structure of the nuclear ionized gas disk in the brightest cluster galaxy NGC 1275 using 5 parallel slit positions with STIS. We will use the 52X0.1E1 aperture in order to minimize charge-transfer losses. The G750M grating with central wavelength 6581 A will be used to cover the [OI], H-alpha, [NII], and [SII] lines. The major axis PA of the disk is approximately 68 degrees and we will request a STIS slit aligned to within +-15 degrees of this in order to best sample the disk kinematics. The AGN in the core of NGC 1275 is bright (V approx. 15.5 mag) and pointlike. We will use a point source acquisition followed by a peakup in the 0.1"-wide slit to center the slit on the nucleus. Following the peakup, we will obtain 3 observations with the slit centered on the nucleus, dithered by 3 pixels along the slit between exposures using a STIS-ALONG-SLIT pattern. Subsequently in each of the next four orbits we will offset the slit in the direction perpendicular to the slit length and then obtain 4 dithered exposures at each offset slit position. These perpendicular offsets will be done using POS-TARG moves at the start of each subsequent orbit to positions offset by +-0.1 and +-0.2 arcsec from the central position. This will produce a densely filled map of the ionized gas kinematics in the circumnuclear disk. Individual STIS exposures will be 600-700 sec in order to keep the number of cosmic-ray hits to a level that is suitable for cleaning. Each orbit will include the standard auto-wavecal. Our STIS exposure times are tuned to fill each orbit completely. Using WFC3/IR and the F160W filter, we will use 1 orbit to obtain a wide-field mosaic of NGC 1275 to measure the galaxy's surface brightness profile. We will mosaic the galaxy in a 2x2 pattern using POS-TARG moves. This will cover a total field of view of about 3.5 x 3.5 arcmin^2 which is sufficient to cover the main body of the galaxy, with the galaxy's central region contained within the overlap region (approx. 30x30 arcsec^2) between the four mosaic positions. At each of the four mosaic positions, we will carry out two dithered exposures using the WFC3-IR-DITHER-LINE pattern. Exposures will be done using the STEP100 sampling pattern and NSAMP=8 which will provide a high dynamic range and a total exposure time of 400 sec at each mosaic position, with no time lost to buffer dump overheads. In order to ensure that we have an unsaturated image of the bright nucleus, we will then obtain a series of RAPID-mode exposures using the IRSUB128 subarray. Using a 4-point WFC3-IR-DITHER-BOX-MIN pattern, we will obtain 4 RAPID exposures at each dither position. This will provide a total exposure time of 28.8 seconds in RAPID mode with 16 individual exposures of 1.8 sec each. There are no orientation constraints for the WFC3/IR visit. AGN/QUASARS Default false false false false false SUPPORTED GALAXY ELLIPTICAL NLR NUCLEUS RADIO GALAXY ICRS coordinates for this source are from Ma et al. 1998 (AJ 116, 516) and are measured via VLBI. This target is listed as an "other" source in the ICRF reference frame by Ma et al. with a positional uncertainty of approximately 3 mas. Coordinates of the nucleus in archival WFPC2/PC and ACS images agree with these VLBI coordinates to within 0.1 arcsec. PERSEUS-A 3C-084 J2000 J2000 STIS/CCD Spectroscopic No No G750M 6581 WFC3/IR Imaging No No F160W POS-TARG DITHER 0.15 LINE false false 3 90.0 STIS-ALONG-SLIT 1 false POS-TARG DITHER 0.15 LINE false false 4 90.0 STIS-ALONG-SLIT 2 false POS-TARG DITHER 0.636 LINE false false 2 41.788 WFC3-IR-DITHER-LINE 4 false POS-TARG DITHER 0.572 WFC3-IR-DITHER-BOX-MIN 0.365 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 5 false 1405993161037 /data/barth/proposals/hst/cycle22/ngc1275/phase2/OP-cache/ngc1275prop-v01.xml The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13662 :visit-id "01" :proposal-version -1 :trans-version "20140605" :date "21-Jul-2014 18:39:20.0" :trans-errors '(:WARNINGS 4 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 5 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 442128 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13662 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13662 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13662 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3092 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13662 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3092 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13662 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 3092 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13662 :visit-id "01" :orbit-number 5 :pcs-time 222 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 419 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 5 0 1406233289614 /data/barth/proposals/hst/cycle22/ngc1275/phase2/OP-cache/ngc1275prop-v02.xml The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13662 :visit-id "02" :proposal-version -1 :trans-version "20140605" :date "24-Jul-2014 13:21:28.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1339488 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13662 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13662 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2708 :al-overhead-at-end 0 :internal-dur-at-end 689 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0