13439( 2) - 06-Jun-2013 19:23:08 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13439 Version: 2 Check-in Time: 06-Jun-2013 19:23:08 STScI Edit Number: 1 Title Gas Physics in Cool-Core Clusters: the Virgo Cluster ------------------------------------------------------------------------------------ Type Cycle GO 21 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. William B. Sparks Space Telescope Science Institute Y CoI: Dr. Megan Donahue Michigan State University N CoI: Dr. James E. Pringle University of Cambridge N CoI: Dr. Robert F. Carswell University of Cambridge N CoI: Prof. Mark Voit Michigan State University N CoI: Dr. Eileen T Meyer Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract We have detected and confirmed the presence of high temperature gas at 10^5K associated with the low excitation 10^4K line emission filaments of M87. This is a profoundly important observation bearing on the physics of transport processes in cool-core clusters, mergers and feedback from AGN into the surrounding ISM. We propose to obtain a deep FUV COS spectrum in order to (1) detect lines that are characteristic of gas at a wide range of temperatures and (2) measure the FUV CIV and HeII line widths and velocity. The additional emission lines will allow us to empirically determine the temperature distribution across the critical region between 10^4K ("optical") and 10^7K ("X-ray") in the filament and understand how these two very different components of the ISM are connected, and which theoretical scenario is viable. The line widths and velocity further offer a direct discrimination between competing physical processes that include turbulence, condensation and evaporation - observationally broadening, inflow and outflow respectively. We will also acquire a two orbit ACS/SBC image to image the HeII line, which has a higher mean emission temperature than CIV, in isolation from CIV. In conjunction with our existing FUV deep image, we will be able to study the structure of the filaments in these two lines, and hence reveal the character of spatial variations of the interface between hot and cool gas. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain 10 orbits of COS G140L spectra, mimicing the target acquisition procedure from proposal 12271. We will also acquire two orbits using the ACS/SBC F165LP filter. Real Time Justification ----------------------- Calibration Justification ------------------------- 13439( 2) - 06-Jun-2013 19:23:08 - [ 2] Additional Comments ------------------- ------------------------------------------------------------------------------------ 13439( 2) - 06-Jun-2013 19:23:08 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 M87-FILAMENT CLUSTER OF GALAXIES, RA=12H30M51.0000S +/- 0.1", J2000 V = 16.7 +/- 0.5 mag given is nucleus S-SBC CONDUCTION FRONT, DEC=+12D23'19.00" +/- 0.1" COOLING FLOW, EMISSION LINE NEBULA, FILAMENT Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 M87-FILAMENT CLUSTER OF GALAXIES, RA=12H30M50.9900S +/- 0.1", J2000 V = 16.7 +/- 0.5 mag given is nucleus S-COS CONDUCTION FRONT, DEC=+12D23'25.50" +/- 0.1" COOLING FLOW, EMISSION LINE NEBULA, FILAMENT Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 M87-FILAMENT GALAXY, RADIO GALAXY RA=12H30M49.4230S +/- 0.1", J2000 V = 16 S-COS-OFFSET DEC=+12D23'28.04" +/- 0.1" Reference Frame: ICRS Comments: This is the position of the nucleus of M87 ------------------------------------------------------------------------------------------------------------------------------------ 13439( 2) - 06-Jun-2013 19:23:08 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.472 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 44.4 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 13439( 2) - 06-Jun-2013 19:23:08 - [ 5] Visit: 01 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 M87-FILAMEN COS/NUV ACQ/IMA PSA MIRRORB 1 100 S (100 TS-COS-OFFS GE S) ET ------------------------------------------------------------------------------------------------------------------------------------ 2 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1100, FLASH=YES, 1 1080 S TS-COS G FP-POS=1, EXTENDED=YES (1080 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1100, FLASH=YES, 1 1080 S TS-COS G FP-POS=1, EXTENDED=YES (1080 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=2 (1400 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1350, FLASH=YES, 1 1450 S TS-COS G EXTENDED=YES, FP-POS=2 (1450 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=3 (1400 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1450 S TS-COS G EXTENDED=YES, FP-POS=3 (1450 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1350, FLASH=YES, 1 1360 S TS-COS G EXTENDED=YES, FP-POS=3 (1360 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=4 (1400 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1350, FLASH=YES, 1 1365 S TS-COS G EXTENDED=YES, FP-POS=4 (1365 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=4 (1400 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 | ------------------------------------------------------------------------------------------------------------------------------------ M87-FILAMENTS-COS-O 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A FFSET GE 13439( 2) - 06-Jun-2013 19:23:08 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ M87-FILAMENTS-COS 2 COS/FUV TIME-TA PSA G140L 1280 none none none none 1 N/A G M87-FILAMENTS-COS 3 COS/FUV TIME-TA PSA G140L 1280 none none none none 1 N/A G M87-FILAMENTS-COS 4 COS/FUV TIME-TA PSA G140L 1280 none none none none 2 N/A G M87-FILAMENTS-COS 5 COS/FUV TIME-TA PSA G140L 1280 none none none none 2 N/A G M87-FILAMENTS-COS 6 COS/FUV TIME-TA PSA G140L 1280 none none none none 3 N/A G M87-FILAMENTS-COS 7 COS/FUV TIME-TA PSA G140L 1280 none none none none 3 N/A G M87-FILAMENTS-COS 8 COS/FUV TIME-TA PSA G140L 1280 none none none none 4 N/A G M87-FILAMENTS-COS 9 COS/FUV TIME-TA PSA G140L 1280 none none none none 4 N/A G M87-FILAMENTS-COS 10 COS/FUV TIME-TA PSA G140L 1280 none none none none 5 N/A G M87-FILAMENTS-COS 11 COS/FUV TIME-TA PSA G140L 1280 none none none none 5 N/A G 13439( 2) - 06-Jun-2013 19:23:08 - [ 7] 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 M87-FILAMEN COS/NUV ACQ/IMA PSA MIRRORB 1 100 S (100 TS-COS-OFFS GE S) ET ------------------------------------------------------------------------------------------------------------------------------------ 2 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1100, FLASH=YES, 1 1080 S TS-COS G FP-POS=1, EXTENDED=YES (1080 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1100, FLASH=YES, 1 1080 S TS-COS G FP-POS=1, EXTENDED=YES (1080 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=2 (1400 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1350, FLASH=YES, 1 1450 S TS-COS G EXTENDED=YES, FP-POS=2 (1450 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=3 (1400 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1450 S TS-COS G EXTENDED=YES, FP-POS=3 (1450 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1350, FLASH=YES, 1 1360 S TS-COS G EXTENDED=YES, FP-POS=3 (1360 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=4 (1400 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1350, FLASH=YES, 1 1365 S TS-COS G EXTENDED=YES, FP-POS=4 (1365 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 M87-FILAMEN COS/FUV TIME-TA PSA G140L 1280 BUFFER-TIME=1300, FLASH=YES, 1 1400 S TS-COS G EXTENDED=YES, FP-POS=4 (1400 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 | ------------------------------------------------------------------------------------------------------------------------------------ M87-FILAMENTS-COS-O 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A FFSET GE 13439( 2) - 06-Jun-2013 19:23:08 - [ 8] 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 | ------------------------------------------------------------------------------------------------------------------------------------ M87-FILAMENTS-COS 2 COS/FUV TIME-TA PSA G140L 1280 none none none none 1 N/A G M87-FILAMENTS-COS 3 COS/FUV TIME-TA PSA G140L 1280 none none none none 1 N/A G M87-FILAMENTS-COS 4 COS/FUV TIME-TA PSA G140L 1280 none none none none 2 N/A G M87-FILAMENTS-COS 5 COS/FUV TIME-TA PSA G140L 1280 none none none none 2 N/A G M87-FILAMENTS-COS 6 COS/FUV TIME-TA PSA G140L 1280 none none none none 3 N/A G M87-FILAMENTS-COS 7 COS/FUV TIME-TA PSA G140L 1280 none none none none 3 N/A G M87-FILAMENTS-COS 8 COS/FUV TIME-TA PSA G140L 1280 none none none none 4 N/A G M87-FILAMENTS-COS 9 COS/FUV TIME-TA PSA G140L 1280 none none none none 4 N/A G M87-FILAMENTS-COS 10 COS/FUV TIME-TA PSA G140L 1280 none none none none 5 N/A G M87-FILAMENTS-COS 11 COS/FUV TIME-TA PSA G140L 1280 none none none none 5 N/A G 13439( 2) - 06-Jun-2013 19:23:08 - [ 9] Visit: 03 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M87-FILAMEN ACS/SBC ACCUM SBC-FIX F165LP 1 1382 S PATTERN 1 1 TS-SBC (2764 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 M87-FILAMEN ACS/SBC ACCUM SBC-FIX F165LP 1 1458 S POS TARG 0.0, 0.5; TS-SBC (2916 S) PATTERN 1 2 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ M87-FILAMENTS-SBC 1 ACS/SBC ACCUM SBC-FIX F165LP 1 none none none 1 N/A M87-FILAMENTS-SBC 1 ACS/SBC ACCUM SBC-FIX F165LP 2 none none none 1 N/A M87-FILAMENTS-SBC 2 ACS/SBC ACCUM SBC-FIX F165LP 1 none none none 2 N/A M87-FILAMENTS-SBC 2 ACS/SBC ACCUM SBC-FIX F165LP 2 none none none 2 N/A 13439( 2) - 06-Jun-2013 19:23:08 - [ 10] Summary Form for Proposal 13439 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA, SBC-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC, COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1100, BUFFER-TIME=1300, BUFFER-TIME=1350, EXTENDED=YES, FLASH=YES, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 1 2, PCS MODE FINE, POS TARG 0.0, 0.5 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F165LP, G140L, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names M87-FILAMENTS-COS, M87-FILAMENTS-COS-OFFSET, M87-FILAMENTS-SBC ------------------------------------------------------------------------------------------------------------------------------------