12466( 4) - 02-Feb-2012 16:57:57 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12466 Version: 4 Check-in Time: 02-Feb-2012 16:57:57 STScI Edit Number: 2 Title The State of High Ionization Gas in 11 Intermediate Redshift Galaxies and Their Surroundings ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Jane C. Charlton The Pennsylvania State University CoI: Dr. Paola Rodriguez Hidalgo The Pennsylvania State University N CoI: Dr. Bart P. Wakker University of Wisconsin - Madison N CoI: Dr. Anand Narayanan Indian Institute of Space Science and N Technology CoI: Dr. Toru Misawa Shinshu University N CoI: Dr. Rajib Ganguly University of Michigan N CoI: Mr. Nigel Mathes The Pennsylvania State University N ------------------------------------------------------------------------------------ Abstract Understanding the properties of the gas that lies in the environments of galaxies is essential for understanding their formation and evolution. This gas may include a variety of structures, such as infalling high-velocity clouds, tidal debris, material ejected in galactic winds, and gas stripped from dwarf galaxies. Near the Milky Way, OVI associated with HI high-velocity clouds (HVCs) has provided strong evidence for the presence of an extended and hot (~ 1 million K) corona. At high redshifts, strong and weak MgII absorbers have been hypothesized to serve as a proxy for detecting these high velocity clouds. Characterizing the properties of the OVI absorption associated with these MgII absorbers is therefore a highly effective tool to push the study of the galactic environment to higher redshifts. High resolution absorption line spectra, which allow us to determine velocities, metallicity, and ionization conditions, will allow us to carry out such study. Previously, we used Cycle 9 STIS E230M near-UV spectra to locate and analyze the CIV associated with 11 MgII absorbers (both strong and weak) in galaxies at 0.4< z<1.0, and we conducted extensive photoionization modeling on these systems. Although model parameters were clear for the low ionization gas, there are ambiguities in the case of the high ionization phase. Here we propose to use the Cosmic Origins Spectrograph (COS) in the far-UV to obtain spectra covering OVI and other needed diagnostics (Lyman series, CIII), with sufficient S/N to discriminate between photoionization and collisional ionization for these systems. The high efficiency of COS will allow us to carry out these observations in 11 orbits. ------------------------------------------------------------------------------------ Observations Description ------------------------ Our goal is to observe 4 QSOs/AGN with sufficiently high S/N ratios (S/N >~ 10 per resolution element) in order to detect various UV absorption in already confirme MgII absorption systems. For all the lines of sight we use the imaging acquisition exposures (SEARCH, IMAGE) with MIRROR B, and the grating G160M and/or G185M for the science exposures to cover O vi ??1031, 1037 and as many other transitions as possible. The spectral resolution of these gratings is 12466( 4) - 02-Feb-2012 16:57:57 - [ 2] high enough to resolve these absorption profiles into multiple narrower components. We use the 3 and 4 FP-SPLIT mode to reduce fixed pattern noise and avoid having important lines fall on grid wires. Also, we used the ETC on the HST/COS website to calculate the necessary exposure times to obtain spectra with, at least, S/N=10 per resolution element. UV fluxes are included as "Other Fluxes". Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12466( 4) - 02-Feb-2012 16:57:57 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 Q0454-2203 GALAXY, QSO RA=04H56M8.9300S +/- 0.1", J2000 Z = V = 16.1 0.65E-14 ergs/s/cm2/A DEC=-21D59'9.30" +/- 0.1" 0.533480 Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 PG1206+459 GALAXY, QSO RA=12H08M58.0200S +/- 0.1", J2000 Z = V = 15.7 0.5E-14 ergs/s/cm2/A DEC=+45D40'35.20" +/- 0.1" 1.162540 Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 3 Q1241+176 GALAXY, QSO RA=12H44M10.8800S +/- 0.1", J2000 Z = V = 15.9 0.35E-14 ergs/s/cm2/A DEC=+17D21'4.70" +/- 0.1" 1.27300 Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 4 Q1248+401 GALAXY, QSO RA=12H50M48.2700S +/- 0.1", J2000 Z = V = 16.3 0.4E-14 ergs/s/cm2/A DEC=+39D51'39.70" +/- 0.1" 1.032790 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 12466( 4) - 02-Feb-2012 16:57:57 - [ 4] 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 Q0454-2203 COS/NUV ACQ/SEA PSA MIRRORB SCAN-SIZE=2, STEP-SIZE=1.767 1 50 S RCH Comments: Calculated for 0.5*F(1700)=0.325E-14 erg/cm2/s/A COS ETC result for S/N=40 (default setting) is 49.9 sec (id COS.ta.352636). Count rate entire detector: 887.266 c/sec. ------------------------------------------------------------------------------------------------------------------------------------ 2 Q0454-2203 COS/NUV ACQ/IMA PSA MIRRORB 1 50 S GE Comments: Calculated for 0.5*F(1700)=0.325E-14 erg/cm2/s/A COS ETC result for S/N=40 (default setting) is 49.9 sec (id COS.ta.352636). Count rate entire detector: 887.266 c/sec. ------------------------------------------------------------------------------------------------------------------------------------ 3 Q0454-2203 COS/FUV TIME-TA PSA G160M 1577 BUFFER-TIME=924, FP-POS=3 1 924 S G Comments: 2/3rds of buffer time at twice nominal flux is 4523 sec ------------------------------------------------------------------------------------------------------------------------------------ 4 Q0454-2203 COS/FUV TIME-TA PSA G160M 1577 BUFFER-TIME=925, FP-POS=4 1 925 S G Comments: 2/3rds of buffer time at twice nominal flux is 4523 sec ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q0454-2203 1 COS/NUV ACQ/SEA PSA MIRRORB none none none none 1 N/A RCH Q0454-2203 2 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE Q0454-2203 3 COS/FUV TIME-TA PSA G160M 1577 none none none none 1 N/A G Q0454-2203 4 COS/FUV TIME-TA PSA G160M 1577 none none none none 1 N/A G 12466( 4) - 02-Feb-2012 16:57:57 - [ 5] 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PG1206+459 COS/NUV ACQ/SEA PSA MIRRORB SCAN-SIZE=2, STEP-SIZE=1.767 1 68 S RCH Comments: Calculated for 0.5*F(1700)=0.25E-14 erg/cm2/s/A COS ETC result for S/N=40 (default) is 67.7 sec (id COS.ta.352643). Count rate entire detector: 874.814 c/sec ------------------------------------------------------------------------------------------------------------------------------------ 2 PG1206+459 COS/NUV ACQ/IMA PSA MIRRORB 1 68 S GE Comments: Calculated for 0.5*F(1700)=0.25E-14 erg/cm2/s/A COS ETC result for S/N=40 (default) is 67.7 sec (id COS.ta.352643). Count rate entire detector: 874.814 c/sec ------------------------------------------------------------------------------------------------------------------------------------ 3 PG1206+459 COS/NUV TIME-TA PSA G185M 1900 FP-POS=3, BUFFER-TIME=965 1 965 S G Comments: 2/3rds of buffer time at twice nominal flux is 1773 sec ------------------------------------------------------------------------------------------------------------------------------------ 4 PG1206+459 COS/NUV TIME-TA PSA G185M 1900 FP-POS=4, BUFFER-TIME=965 1 965 S G Comments: 2/3rds of buffer time at twice nominal flux is 1773 sec ------------------------------------------------------------------------------------------------------------------------------------ 5 PG1206+459 COS/NUV TIME-TA PSA G185M 1900 FP-POS=1, BUFFER-TIME=1497 1 1497 S G Comments: 2/3rds of buffer time at twice nominal flux is 1773 sec ------------------------------------------------------------------------------------------------------------------------------------ 6 PG1206+459 COS/NUV TIME-TA PSA G185M 1900 FP-POS=2, BUFFER-TIME=1497 1 1497 S G Comments: 2/3rds of buffer time at twice nominal flux is 1773 sec ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 12466( 4) - 02-Feb-2012 16:57:57 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PG1206+459 1 COS/NUV ACQ/SEA PSA MIRRORB none none none none 1 N/A RCH PG1206+459 2 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE PG1206+459 3 COS/NUV TIME-TA PSA G185M 1900 none none none none 1 N/A G PG1206+459 4 COS/NUV TIME-TA PSA G185M 1900 none none none none 1 N/A G PG1206+459 5 COS/NUV TIME-TA PSA G185M 1900 none none none none 2 N/A G PG1206+459 6 COS/NUV TIME-TA PSA G185M 1900 none none none none 2 N/A G 12466( 4) - 02-Feb-2012 16:57:57 - [ 7] 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 Q1241+176 COS/NUV ACQ/SEA PSA MIRRORB SCAN-SIZE=2, STEP-SIZE=1.767 1 89 S RCH Comments: Calculated for 0.5*F(1700)=0.175E-14 erg/cm2/s/A COS ETC result for S/N=40 is 88.0731 (id COS.ta.352647). Count rate entire detector: 866.702 c/sec ------------------------------------------------------------------------------------------------------------------------------------ 2 Q1241+176 COS/NUV ACQ/IMA PSA MIRRORB 1 89 S GE Comments: Calculated for 0.5*F(1700)=0.175E-14 erg/cm2/s/A COS ETC result for S/N=40 is 88.0731 (id COS.ta.352647). Count rate entire detector: 866.702 c/sec ------------------------------------------------------------------------------------------------------------------------------------ 3 Q1241+176 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=807, FP-POS=3 1 807 S G Comments: 2/3rds of buffer time at twice nominal flux is 8737 sec ------------------------------------------------------------------------------------------------------------------------------------ 4 Q1241+176 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=808, FP-POS=4 1 808 S G Comments: 2/3rds of buffer time at twice nominal flux is 8737 sec ------------------------------------------------------------------------------------------------------------------------------------ 5 Q1241+176 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1389, FP-POS=1 1 1389 S G Comments: 2/3rds of buffer time at twice nominal flux is 8737 sec ------------------------------------------------------------------------------------------------------------------------------------ 6 Q1241+176 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1389, FP-POS=2 1 1389 S G Comments: 2/3rds of buffer time at twice nominal flux is 8737 sec ------------------------------------------------------------------------------------------------------------------------------------ 7 Q1241+176 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1389, FP-POS=3 1 1389 S G Comments: 2/3rds of buffer time at twice nominal flux is 8737 sec ------------------------------------------------------------------------------------------------------------------------------------ 12466( 4) - 02-Feb-2012 16:57:57 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 8 Q1241+176 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1389, FP-POS=4 1 1389 S G Comments: 2/3rds of buffer time at twice nominal flux is 8737 sec ------------------------------------------------------------------------------------------------------------------------------------ 9 Q1241+176 COS/NUV TIME-TA PSA G185M 1953 FP-POS=1, BUFFER-TIME=1425 1 1425 S G Comments: 2/3rds of buffer time at twice nominal flux is 1796 sec ------------------------------------------------------------------------------------------------------------------------------------ 10 Q1241+176 COS/NUV TIME-TA PSA G185M 1953 FP-POS=2, BUFFER-TIME=1425 1 1425 S G Comments: 2/3rds of buffer time at twice nominal flux is 1796 sec ------------------------------------------------------------------------------------------------------------------------------------ 11 Q1241+176 COS/NUV TIME-TA PSA G185M 1953 FP-POS=3, BUFFER-TIME=1426 1 1426 S G Comments: 2/3rds of buffer time at twice nominal flux is 1796 sec ------------------------------------------------------------------------------------------------------------------------------------ 12 Q1241+176 COS/NUV TIME-TA PSA G185M 1953 FP-POS=4, BUFFER-TIME=1426 1 1426 S G Comments: 2/3rds of buffer time at twice nominal flux is 1796 sec ------------------------------------------------------------------------------------------------------------------------------------ 13 Q1241+176 COS/NUV TIME-TA PSA G185M 1953 FP-POS=1, BUFFER-TIME=1426 1 1426 S G Comments: 2/3rds of buffer time at twice nominal flux is 1796 sec ------------------------------------------------------------------------------------------------------------------------------------ 14 Q1241+176 COS/NUV TIME-TA PSA G185M 1953 FP-POS=2, BUFFER-TIME=1426 1 1426 S G Comments: 2/3rds of buffer time at twice nominal flux is 1796 sec ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q1241+176 1 COS/NUV ACQ/SEA PSA MIRRORB none none none none 1 N/A RCH Q1241+176 2 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE Q1241+176 3 COS/FUV TIME-TA PSA G160M 1600 none none none none 1 N/A G 12466( 4) - 02-Feb-2012 16:57:57 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q1241+176 4 COS/FUV TIME-TA PSA G160M 1600 none none none none 1 N/A G Q1241+176 5 COS/FUV TIME-TA PSA G160M 1600 none none none none 2 N/A G Q1241+176 6 COS/FUV TIME-TA PSA G160M 1600 none none none none 2 N/A G Q1241+176 7 COS/FUV TIME-TA PSA G160M 1600 none none none none 3 N/A G Q1241+176 8 COS/FUV TIME-TA PSA G160M 1600 none none none none 3 N/A G Q1241+176 9 COS/NUV TIME-TA PSA G185M 1953 none none none none 4 N/A G Q1241+176 10 COS/NUV TIME-TA PSA G185M 1953 none none none none 4 N/A G Q1241+176 11 COS/NUV TIME-TA PSA G185M 1953 none none none none 5 N/A G Q1241+176 12 COS/NUV TIME-TA PSA G185M 1953 none none none none 5 N/A G Q1241+176 13 COS/NUV TIME-TA PSA G185M 1953 none none none none 6 N/A G Q1241+176 14 COS/NUV TIME-TA PSA G185M 1953 none none none none 6 N/A G 12466( 4) - 02-Feb-2012 16:57:57 - [ 10] Visit: 04 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 Q1248+401 COS/NUV ACQ/SEA PSA MIRRORB SCAN-SIZE=2, STEP-SIZE=1.767 1 74 S RCH Comments: Calculated for 0.5*F(1700)=0.2E-14 erg/cm2/s/A COS ETC result for S/N=40 (default) is 73.5 sec (id COS.ta.352654). Count rate entire detector: 872.019 c/sec ------------------------------------------------------------------------------------------------------------------------------------ 2 Q1248+401 COS/NUV ACQ/IMA PSA MIRRORB 1 74 S GE Comments: Calculated for 0.5*F(1700)=0.2E-14 erg/cm2/s/A COS ETC result for S/N=40 (default) is 73.5 sec (id COS.ta.352654). Count rate entire detector: 872.019 c/sec ------------------------------------------------------------------------------------------------------------------------------------ 3 Q1248+401 COS/NUV TIME-TA PSA G185M 1921 FP-POS=3, BUFFER-TIME=902 1 902 S G Comments: 2/3rds of buffer time at twice nominal flux is 1775 sec ------------------------------------------------------------------------------------------------------------------------------------ 4 Q1248+401 COS/NUV TIME-TA PSA G185M 1921 FP-POS=4, BUFFER-TIME=902 1 902 S G Comments: 2/3rds of buffer time at twice nominal flux is 1775 sec ------------------------------------------------------------------------------------------------------------------------------------ 5 Q1248+401 COS/NUV TIME-TA PSA G185M 1921 FP-POS=1, BUFFER-TIME=1452 1 1452 S G Comments: 2/3rds of buffer time at twice nominal flux is 1775 sec ------------------------------------------------------------------------------------------------------------------------------------ 6 Q1248+401 COS/NUV TIME-TA PSA G185M 1921 FP-POS=2, BUFFER-TIME=1452 1 1452 S G Comments: 2/3rds of buffer time at twice nominal flux is 1775 sec ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 12466( 4) - 02-Feb-2012 16:57:57 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ Q1248+401 1 COS/NUV ACQ/SEA PSA MIRRORB none none none none 1 N/A RCH Q1248+401 2 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE Q1248+401 3 COS/NUV TIME-TA PSA G185M 1921 none none none none 1 N/A G Q1248+401 4 COS/NUV TIME-TA PSA G185M 1921 none none none none 1 N/A G Q1248+401 5 COS/NUV TIME-TA PSA G185M 1921 none none none none 2 N/A G Q1248+401 6 COS/NUV TIME-TA PSA G185M 1921 none none none none 2 N/A G 12466( 4) - 02-Feb-2012 16:57:57 - [ 12] Summary Form for Proposal 12466 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, ACQ/SEARCH, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1389, BUFFER-TIME=1425, BUFFER-TIME=1426, BUFFER-TIME=1452, BUFFER-TIME=1497, BUFFER-TIME=807, BUFFER-TIME=808, BUFFER-TIME=902, BUFFER-TIME=924, BUFFER-TIME=925, BUFFER-TIME=965, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, SCAN-SIZE=2, STEP-SIZE=1.767 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G160M, G185M, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names PG1206+459, Q0454-2203, Q1241+176, Q1248+401 ------------------------------------------------------------------------------------------------------------------------------------