13327( 2) - 24-Jun-2013 12:35:20 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13327 Version: 2 Check-in Time: 24-Jun-2013 12:35:20 STScI Edit Number: 0 Title Proper Motions at 500 Mpc: Measuring Superluminal motions in Optical Jets with HST ------------------------------------------------------------------------------------ Type Cycle GO 21 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Eileen T Meyer Space Telescope Science Institute Y CoI: Dr. William B. Sparks Space Telescope Science Institute N CoI: Dr. John A. Biretta Space Telescope Science Institute N CoI: Dr. Roeland P. van der Marel Space Telescope Science Institute N CoI: Dr. Jay Anderson Space Telescope Science Institute N CoI: Dr. Sangmo Tony Sohn Space Telescope Science Institute N CoI: Dr. Marco Chiaberge Space Telescope Science Institute - ESA N CoI: Dr. Colin A. Norman The Johns Hopkins University N CoI: Prof. Eric S. Perlman Florida Institute of Technology N CoI: Dr. Masanori Nakamura Academia Sinica, Institute of Astronomy N and Astrophysics ------------------------------------------------------------------------------------ Abstract Following the success of a recent archival program to measure precisely the superluminal proper motions of the relativistic jet in the nearby galaxy M87, we propose new ACS/WFC observations of three radio galaxies with optical jets previously detected by HST. The moderately deep imaging we propose will provide us with a well-sampled astrometric reference frame in order to accurately register archival HST images of these jets, using globular clusters and background galaxies to reach sub-pixel astrometric accuracy. In conjunction with archival data, the new observations will provide baselines of 20 years over which to compare the location of knots in these jets, allowing us to measure speeds for individual components with accuracies of 0.2c for the nearby source 3C 264 and 1c for 3C 346 and 3C 273. The kinematics of jets on large scales have not been previously studied, leaving open the question of whether the bright knots and compact features in the jet are standing recollimation shocks, or propogating plasma with possibly relativistic bulk motion. The latter case implies a jet that is intermittent on timescales much longer than the dynamical timescale. Observing proper motions in the optical allows us to study kinematics of compact features associated with zones of in situ particle acceleration which produce the higher-energy optical through X-ray photons, not distinctly visible in radio maps. The selected targets offer a diversity in jet power and morphological type which will allow us to better understand the AGN jet population as a whole, and put constraints on unknowns such as the jet energy content, and the impact of jets on the galaxy and cluster environment. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will observe each target using the ACS/WFC F606W filter and a dithering strategy that uses POS TARGs configured according to the total number of exposures. The POS TARGS have also been offset by a fixed number of pixels from the WFC1 pointing in order to put the targets closer to the readout amplifiers 13327( 2) - 24-Jun-2013 12:35:20 - [ 2] on WFC1, in order to reduce CTE effects. The total number of exposures is simply 4 per orbit: 16 total for 3C 273, and 8 each for 3C 264 and 3C 346, at around 500 - 600 seconds per exposure. 3C273 is roll constrained to avoid blooming and saturation from the quasar core overrunning the jet, which is the area of scientific interest. Saturation is not expected to be a problem for the other two targets. Post-flash is not used as background levels should be adequate with the proposed exposure times. (Note that these observations are NOT duplications as the goal of the project is to measure proper motions and other changes since previous epochs). Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 13327( 2) - 24-Jun-2013 12:35:20 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 3C264-JET GALAXY, JET, QSO, RA=11H45M5.0000S, J2000 V = 13.97 QUASAR, RADIO GALAXY DEC=+19D36'22.74" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 3C346-JET GALAXY, JET, QSO, RA=16H43M48.6290S, J2000 V = 17.5 QUASAR, RADIO GALAXY DEC=+17D15'48.97" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 3 3C273-JET GALAXY, JET, QSO, RA=12H29M6.6951S, J2000 V = 12.85 QUASAR, RADIO GALAXY DEC=+02D03'8.66" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 13327( 2) - 24-Jun-2013 12:35:20 - [ 4] Visit: 01 Visit Requirements: ORIENT 324.7D TO 29.7 D; ORIENT 59.7D TO 114.7 D; ORIENT 144.7D TO 209.7 D; ORIENT 239.7D TO 294.7 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 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 550 S POS TARG 55, 15 see below (550 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 550 S POS TARG 55.2228, see below 15.1158 (550 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 550 S POS TARG 55.0998, see below 15.2303 (550 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 550 S POS TARG 55.3225, see below 15.3460 (550 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.4075, see below 15.0306 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.6304, see below 15.1464 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.5073, see below 15.2609 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.7302, see below 15.3767 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.0018, see below 15.4085 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.2246, see below 15.5243 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 13327( 2) - 24-Jun-2013 12:35:20 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 11 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.1017, see below 15.6388 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.3244, see below 15.7545 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.4093, see below 15.4392 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.6322, see below 15.5550 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.5091, see below 15.6695 (598 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 3C273-JET ACS/WFC ACCUM WFC1 F606W 1 598 S POS TARG 55.7320, see below 15.7852 (598 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 | ------------------------------------------------------------------------------------------------------------------------------------ 3C273-JET 1 ACS/WFC ACCUM WFC1 F606W none none none none 1 550.0 S 3C273-JET 2 ACS/WFC ACCUM WFC1 F606W none none none none 1 550.0 S 3C273-JET 3 ACS/WFC ACCUM WFC1 F606W none none none none 1 550.0 S 3C273-JET 4 ACS/WFC ACCUM WFC1 F606W none none none none 1 550.0 S 3C273-JET 5 ACS/WFC ACCUM WFC1 F606W none none none none 2 598.0 S 3C273-JET 6 ACS/WFC ACCUM WFC1 F606W none none none none 2 598.0 S 3C273-JET 7 ACS/WFC ACCUM WFC1 F606W none none none none 2 598.0 S 3C273-JET 8 ACS/WFC ACCUM WFC1 F606W none none none none 2 598.0 S 3C273-JET 9 ACS/WFC ACCUM WFC1 F606W none none none none 3 598.0 S 3C273-JET 10 ACS/WFC ACCUM WFC1 F606W none none none none 3 598.0 S 3C273-JET 11 ACS/WFC ACCUM WFC1 F606W none none none none 3 598.0 S 3C273-JET 12 ACS/WFC ACCUM WFC1 F606W none none none none 3 598.0 S 3C273-JET 13 ACS/WFC ACCUM WFC1 F606W none none none none 4 598.0 S 3C273-JET 14 ACS/WFC ACCUM WFC1 F606W none none none none 4 598.0 S 3C273-JET 15 ACS/WFC ACCUM WFC1 F606W none none none none 4 598.0 S 3C273-JET 16 ACS/WFC ACCUM WFC1 F606W none none none none 4 598.0 S 13327( 2) - 24-Jun-2013 12:35:20 - [ 6] 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 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55, 15 see below (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55.1740, see below 15.2350 (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55.3232, see below 15.1235 (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55.1005, see below 15.3305 (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.5075, see below 15.0505 (602 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.6815, see below 15.2855 (602 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.8300, see below 15.1735 (602 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 3C264-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.6080, see below 15.3810 (602 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 | ------------------------------------------------------------------------------------------------------------------------------------ 3C264-JET 1 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 3C264-JET 2 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 3C264-JET 3 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 3C264-JET 4 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 13327( 2) - 24-Jun-2013 12:35:20 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 3C264-JET 5 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 3C264-JET 6 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 3C264-JET 7 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 3C264-JET 8 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 13327( 2) - 24-Jun-2013 12:35:20 - [ 8] 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 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55, 15 see below (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55.1740, see below 15.2350 (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55.3232, see below 15.1235 (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 569 S POS TARG 55.1005, see below 15.3305 (554 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.5075, see below 15.0505 (602 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.6815, see below 15.2855 (602 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.8300, see below 15.1735 (602 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 3C346-JET ACS/WFC ACCUM WFC1 F606W 1 617 S POS TARG 55.6080, see below 15.3810 (602 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 | ------------------------------------------------------------------------------------------------------------------------------------ 3C346-JET 1 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 3C346-JET 2 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 3C346-JET 3 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 3C346-JET 4 ACS/WFC ACCUM WFC1 F606W none none none none 1 554.0 S 13327( 2) - 24-Jun-2013 12:35:20 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 3C346-JET 5 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 3C346-JET 6 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 3C346-JET 7 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 3C346-JET 8 ACS/WFC ACCUM WFC1 F606W none none none none 2 602.0 S 13327( 2) - 24-Jun-2013 12:35:20 - [ 10] Summary Form for Proposal 13327 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 144.7D TO 209.7 D, ORIENT 239.7D TO 294.7 D, ORIENT 324.7D TO 29.7 D, ORIENT 59.7D TO 114.7 D, POS TARG 55, 15, POS TARG 55.0018, 15.4085, POS TARG 55.0998, 15.2303, POS TARG 55.1005, 15.3305, POS TARG 55.1017, 15.6388, POS TARG 55.1740, 15.2350, POS TARG 55.2228, 15.1158, POS TARG 55.2246, 15.5243, POS TARG 55.3225, 15.3460, POS TARG 55.3232, 15.1235, POS TARG 55.3244, 15.7545, POS TARG 55.4075, 15.0306, POS TARG 55.4093, 15.4392, POS TARG 55.5073, 15.2609, POS TARG 55.5075, 15.0505, POS TARG 55.5091, 15.6695, POS TARG 55.6080, 15.3810, POS TARG 55.6304, 15.1464, POS TARG 55.6322, 15.5550, POS TARG 55.6815, 15.2855, POS TARG 55.7302, 15.3767, POS TARG 55.7320, 15.7852, POS TARG 55.8300, 15.1735 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names 3C264-JET, 3C273-JET, 3C346-JET ------------------------------------------------------------------------------------------------------------------------------------