12522( 8) - 19-Jun-2012 11:17:56 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12522 Version: 8 Check-in Time: 19-Jun-2012 11:17:56 STScI Edit Number: 5 Title Testing feedback with z=1 star-forming galaxies ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Nicolas Bouche Observatoire Midi-Pyrenees Y CoI: Prof. Philipp Richter Universitat Potsdam N CoI: Dr. Michael T. Murphy Swinburne University of Technology N CoI: Prof. Crystal Martin University of California - Santa Barbara N CoI: Dr. Thierry Contini Observatoire Midi-Pyrenees N ------------------------------------------------------------------------------------ Abstract Theoretical models of galaxy formation predict that feedback from supernovae plays a crucial role in regulating star formation in low-mass galaxies. Efficient feedback, with large outflow rates, is needed in these models to account for the low-efficiency of galaxy formation in low-mass halos. Current constraints on mass outflow rates in this low mass regime are very sparse and the best estimates are uncertain by orders of magnitude. In order to test feedback models, we selected a unique sample of z=1 star-forming galaxies, near background quasars, that show direct evidence of strong outflows: they show large velocities (200-500 km/s) from the low-ionization absorption lines. The advantage in using background quasars over traditional galaxy spectra is that the kinematics and location of the cool gas can be determined accurately. The one missing ingredient in order to determine accurate mass outflow rates is the total gas column density. Therefore, we propose to measure the total gas column density and empirically determine the ouflow rates in low-mass (sub-L*) star-forming galaxies using COS/G230L given the redshift of our sources. With these data we will answer the fundamental question: Are the mass outflow rates higher than the star-formation rates as predicted by theory? Our sample is unique: for each quasar-galaxy pair, 
we have deep IFU kinematics of the galaxy and the line-of-sight kinematics with high-resolution
 optical spectroscopy. Our results will be a huge step forward and provide a strong bench mark for models. ------------------------------------------------------------------------------------ Observations Description ------------------------ In order to determine accurate mass outflow rates in star-forming galaxies, we need to measure the total gas column density for the outflowing gas probed by the background quasars. Given the redshift of our sources, we must use NUV spectroscopy with COS/G230L. The low resolution grating is sufficient as we expect absorptions of a few AA, i.e. not mAA. Our pilot study is made of the best 3 sources from our sample. Hence, the scope of this project is very focused. For J0302, we aim to detect and measure the HI absorption line at 2215AA. For J1422, we aim to detect and measure the HI absorption line at 2331AA. For J0147, we aim to detect and measure the HI absorption line at 2480AA. 12522( 8) - 19-Jun-2012 11:17:56 - [ 2] Real Time Justification ----------------------- NA Calibration Justification ------------------------- Standard. Additional Comments ------------------- ------------------------------------------------------------------------------------ 12522( 8) - 19-Jun-2012 11:17:56 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 2QZJ0302-321 EXT-MEDIUM, ABSORPTION RA=03H02M49.6800S +/- 0.2", J2000 V = 17.8 NUV=18.5 6 LINE SYSTEM, ABSORPTION DEC=-32D16'0.90" +/- 0.2" LINE SYSTEM - EXTRAGALACTIC, WIND Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1422-00 EXT-MEDIUM, ABSORPTION RA=14H22M53.3120S +/- 0.15", J2000 V = 18.9 NUV=19.9 01 LINE SYSTEM, ABSORPTION DEC=-00D01'49.14" +/- 0.15" LINE SYSTEM - EXTRAGALACTIC Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ0147+12 EXT-MEDIUM, ABSORPTION RA=01H47M17.7600S +/- 0.1", J2000 V = 18.0 NUV=20.5 58 LINE SYSTEM, ABSORPTION DEC=+12D58'8.80" +/- 0.1" LINE SYSTEM - EXTRAGALACTIC Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 12522( 8) - 19-Jun-2012 11:17:56 - [ 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 2QZJ0302-32 COS/NUV ACQ/IMA PSA MIRRORB 1 190 S GS ACQ SCENARIO BASE1B3 16 GE ------------------------------------------------------------------------------------------------------------------------------------ 2 2QZJ0302-32 COS/NUV TIME-TA PSA G230L 3360 EXTENDED=NO, FP-POS=1, 1 1085 S 16 G BUFFER-TIME=985, FLASH=YES see below Comments: we are looking at HI absorption line at 2215 ------------------------------------------------------------------------------------------------------------------------------------ 3 2QZJ0302-32 COS/NUV TIME-TA PSA G230L 3360 EXTENDED=NO, FP-POS=3, 1 1085 S 16 G BUFFER-TIME=985, FLASH=YES see below Comments: we are looking at HI absorption line at 2215 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 2QZJ0302-3216 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 2QZJ0302-3216 2 COS/NUV TIME-TA PSA G230L 3360 none none none none 1 1097.0 S G 2QZJ0302-3216 3 COS/NUV TIME-TA PSA G230L 3360 none none none none 1 1097.0 S G 12522( 8) - 19-Jun-2012 11:17:56 - [ 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 SDSSJ1422-0 COS/NUV ACQ/IMA PSA MIRRORA 1 80 S GS ACQ SCENARIO BASE1B3 001 GE ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1422-0 COS/NUV TIME-TA PSA G230L 3360 EXTENDED=NO, FP-POS=ALL, 1 2541 S 001 G FLASH=YES, BUFFER-TIME=2000 see below Comments: we are looking at HI absorption line at 2321 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1422-0001 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE SDSSJ1422-0001 2 COS/NUV TIME-TA PSA G230L 3360 none none none 1 1 2443.0 S G SDSSJ1422-0001 2 COS/NUV TIME-TA PSA G230L 3360 none none none 2 2 2949.0 S G SDSSJ1422-0001 2 COS/NUV TIME-TA PSA G230L 3360 none none none 3 3 2949.0 S G SDSSJ1422-0001 2 COS/NUV TIME-TA PSA G230L 3360 none none none 4 4 2949.0 S G 12522( 8) - 19-Jun-2012 11:17:56 - [ 6] 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 SDSSJ0147+1 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=POINT 1 40 S 258 Comments: target has r=18mag ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ0147+1 STIS/NUV TIME-TA 52X0.2 G230L 2376 BUFFER-TIME=360 1 2100 S 258 -MAMA G see below Comments: we are looking at HI absorption line at 2480 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ0147+1 STIS/NUV TIME-TA 52X0.2 G230L 2376 BUFFER-TIME=360 1 2400 S 258 -MAMA G see below Comments: we are looking at HI absorption line at 2480 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ0147+1 STIS/NUV TIME-TA 52X0.2 G230L 2376 BUFFER-TIME=360 1 2400 S 258 -MAMA G see below Comments: we are looking at HI absorption line at 2480 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ0147+1 STIS/NUV TIME-TA 52X0.2 G230L 2376 BUFFER-TIME=360 1 2400 S 258 -MAMA G see below Comments: we are looking at HI absorption line at 2480 ------------------------------------------------------------------------------------------------------------------------------------ 6 SDSSJ0147+1 STIS/NUV TIME-TA 52X0.2 G230L 2376 BUFFER-TIME=360 1 2400 S 258 -MAMA G see below Comments: we are looking at HI absorption line at 2480 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ0147+1258 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A SDSSJ0147+1258 2 STIS/NUV TIME-TA 52X0.2 G230L 2376 none none none none 1 2223.0 S -MAMA G SDSSJ0147+1258 3 STIS/NUV TIME-TA 52X0.2 G230L 2376 none none none none 2 2995.0 S -MAMA G SDSSJ0147+1258 4 STIS/NUV TIME-TA 52X0.2 G230L 2376 none none none none 3 2995.0 S -MAMA G SDSSJ0147+1258 5 STIS/NUV TIME-TA 52X0.2 G230L 2376 none none none none 4 2995.0 S -MAMA G SDSSJ0147+1258 6 STIS/NUV TIME-TA 52X0.2 G230L 2376 none none none none 5 2995.0 S -MAMA G 12522( 8) - 19-Jun-2012 11:17:56 - [ 7] Summary Form for Proposal 12522 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.2, F28X50LP, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/NUV, STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ, ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=POINT, BUFFER-TIME=2000, BUFFER-TIME=360, BUFFER-TIME=985, EXTENDED=NO, FLASH=YES, FP-POS=1, FP-POS=3, FP-POS=ALL ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230L, MIRROR, MIRRORA, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names 2QZJ0302-3216, SDSSJ0147+1258, SDSSJ1422-0001 ------------------------------------------------------------------------------------------------------------------------------------