10495( 6) - 07/25/05 09:21 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10495 Version: 6 Check-in Time: 25-Jul-2005 13:20:14 Title The Nuclear Environment of the Galaxy Hosting the Largest Known Radio Outburst ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 14 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Brian R. McNamara Ohio University CoI: Dr. Michael W. Wise Massachusetts Institute of Technology N CoI: Dr. Paul E. J. Nulsen Harvard University N ------------------------------------------------------------------------------------ Abstract We propose to image the cD galaxy host of the most powerful radio outburst known in the Universe. The outburst was identified in a Chandra image of a z=0.216 galaxy cluster which revealed a pair of enormous cavities, each 200 kpc in diameter, embedded in its X-ray halo. The outburst began approximately 100 Myr ago and has expended 6x10^61 ergs. It is apparently powered by accretion onto the cD's billion solar mass nuclear black hole, which grew heavier by roughly 1/3 during the outburst. We intend to examine the morphology and nuclear environment of the host galaxy to understand the conditions that created this remarkable event. ------------------------------------------------------------------------------------ Observations Description ------------------------ We plan to take images of the cD galaxy using ACS/WFC through the 850LP filter for a duration of one orbit, and through the 330W filter using ACS/HRC with a two orbit duration. The exposures will be broken into two sub exposures using a line dither pattern corresponding to Pattern_Number 10. A total of six sub exposures is planned. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10495( 6) - 07/25/05 09:21 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 MS0735.6+742 CLUSTER OF GALAXIES, RA=07H41M44.0000S +/- 0.1", J2000 V = 15.0 1 NUCLEUS DEC=+74D14'38.30" +/- 0.1" Coordinate Source: Other_Source: Chandra image 10495( 6) - 07/25/05 09:21 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.145 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 47.23 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-HRC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.079 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 44.39 Angle_Between_Sides Center_Pattern NO Pattern_Comments: Pattern #20 from ACS-HRC dither web page. ------------------------------------------------------------------------------------------------------------------------------------ 10495( 6) - 07/25/05 09:21 - [ 4] Visit: 01 Visit Priority: Visit Requirements: PCS MODE FINE 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MS0735.6+74 ACS/WFC ACCUM WFC F850LP CR-SPLIT=NO 1 1450 S PATTERN 1 1 21 ------------------------------------------------------------------------------------------------------------------------------------ 2 MS0735.6+74 ACS/HRC ACCUM HRC F330W CR-SPLIT=NO 1 1530 S PATTERN 2 2 21 ------------------------------------------------------------------------------------------------------------------------------------ 3 MS0735.6+74 ACS/HRC ACCUM HRC F330W CR-SPLIT=NO 1 1585 S PATTERN 2 3 21 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MS0735.6+7421 1 ACS/WFC ACCUM WFC F850LP 1 none none none 1 N/A MS0735.6+7421 1 ACS/WFC ACCUM WFC F850LP 2 none none none 1 N/A MS0735.6+7421 2 ACS/HRC ACCUM HRC F330W 1 none none none 2 N/A MS0735.6+7421 2 ACS/HRC ACCUM HRC F330W 2 none none none 2 N/A MS0735.6+7421 3 ACS/HRC ACCUM HRC F330W 1 none none none 3 N/A MS0735.6+7421 3 ACS/HRC ACCUM HRC F330W 2 none none none 3 N/A 10495( 6) - 07/25/05 09:21 - [ 5] Summary Form for Proposal 10495 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC HRC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ACS/HRC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PCS MODE FINE PATTERN 1 1 PATTERN 2 2 PATTERN 2 3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F850LP F330W ------------------------------------------------------------------------------------------------------------------------------------ Target Names MS0735.6+7421 ------------------------------------------------------------------------------------------------------------------------------------