12752( 7) - 09-Jul-2012 17:03:14 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12752 Version: 7 Check-in Time: 09-Jul-2012 17:03:14 STScI Edit Number: 4 Title M31*: A Resolved Low-Luminosity Accretion Flow Around a Murmuring Monster ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Michael R. Garcia Smithsonian Institution Astrophysical Y Observatory CoI: Dr. Fulvio Melia University of Arizona N CoI: Dr. Fred Baganoff Massachusetts Institute of Technology N CoI: Dr. Zhiyuan Li University of California - Los Angeles N CoI: Dr. Robin Barnard Harvard University N CoI: Dr. Francis Primini Smithsonian Institution Astrophysical N Observatory CoI: Dr. Lorant Sjouwerman Associated Universities, Inc. N CoI: Dr. Stephen S. Murray Smithsonian Institution Astrophysical N Observatory CoI: Dr. Thomas J. Maccarone University of Southampton N CoI: Dr. Rudy Wijnands University of Amsterdam N ------------------------------------------------------------------------------------ Abstract We propose a moderately long ACIS-S observation of the nucleus of M31 in order to measure the structure of the only Bondi flow well resolved by Chandra, to search for eclipses in point X-ray sources, and to carry out a sensitive study of the structure of the diffuse gas and x-ray binary/SNR population in the core of M31. M31* recently entered a period of enhanced activity akin to Sgr A* flares, motivating our request for EVLA and HST/UV coverage. The proximity, high mass, and low ISM gas temperature of M31* give it the largest angular Bondi radius of of any SMBH. Thus it is the premier object for studies of SMBH sub-Eddington accretion. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will observe M31* using the COS/FUV/G140L grating. A total of four orbits will be divided in two epochs (visits), each with two orbits. In each epoch, simultaneous Chandra (50 ks with ACIS-S) and EVLA (20 hours with A-configuration) observations will be performed. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments 12752( 7) - 09-Jul-2012 17:03:14 - [ 2] ------------------- ------------------------------------------------------------------------------------ 12752( 7) - 09-Jul-2012 17:03:14 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 M31-NUCLEUS GALAXY, NUCLEUS RA=00H42M44.3540S +/- 0.2", J2000 V = -300 V = 3.44 DEC=+41D16'8.11" +/- 0.2" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 12752( 7) - 09-Jul-2012 17:03:14 - [ 4] Visit: 01 Visit Requirements: ORIENT 247D TO 248 D; BETWEEN 30-JUN-2012:00:00:00 AND 09-JUL-2012:00:00:00 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 M31-NUCLEUS COS/NUV ACQ/IMA PSA MIRRORA 1 100 S GE ------------------------------------------------------------------------------------------------------------------------------------ 2 M31-NUCLEUS COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=2481, FP-POS=1, 1 2481 S G EXTENDED=YES ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-NUCLEUS COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=3055, 1 3055 S G EXTENDED=YES, FP-POS=4 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-NUCLEUS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE M31-NUCLEUS 2 COS/FUV TIME-TA PSA G140L 1280 none none none none 1 N/A G M31-NUCLEUS 3 COS/FUV TIME-TA PSA G140L 1280 none none none none 2 N/A G 12752( 7) - 09-Jul-2012 17:03:14 - [ 5] Visit: 02 Visit Requirements: ORIENT 245D TO 245 D; BETWEEN 13-AUG-2012:00:00:00 AND 20-AUG-2012:00:00:00 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 M31-NUCLEUS COS/NUV ACQ/IMA PSA MIRRORA 1 100 S GE ------------------------------------------------------------------------------------------------------------------------------------ 2 M31-NUCLEUS COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=2467, 1 2467 S G EXTENDED=YES, FP-POS=1 ------------------------------------------------------------------------------------------------------------------------------------ 3 M31-NUCLEUS COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=3041, 1 3041 S G EXTENDED=YES, FP-POS=4 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ M31-NUCLEUS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE M31-NUCLEUS 2 COS/FUV TIME-TA PSA G140L 1280 none none none none 1 N/A G M31-NUCLEUS 3 COS/FUV TIME-TA PSA G140L 1280 none none none none 2 N/A G 12752( 7) - 09-Jul-2012 17:03:14 - [ 6] Summary Form for Proposal 12752 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=2467, BUFFER-TIME=2481, BUFFER-TIME=3041, BUFFER-TIME=3055, EXTENDED=YES, FP-POS=1, FP-POS=4 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 13-AUG-2012:00:00:00 AND 20-AUG-2012:00:00:00, BETWEEN 30-JUN-2012:00:00:00 AND 09-JUL-2012:00:00:00, ORIENT 245D TO 245 D, ORIENT 247D TO 248 D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140L, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names M31-NUCLEUS ------------------------------------------------------------------------------------------------------------------------------------