13283( 3) - 24-Jan-2014 21:44:47 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13283 Version: 3 Check-in Time: 24-Jan-2014 21:44:47 STScI Edit Number: 0 Title Testing ISM Evolution Models with Gravitational Lenses ------------------------------------------------------------------------------------ Type Cycle GO 21 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Xinyu Dai University of Oklahoma Norman Campus Y CoI: Prof. Karen M. Leighly University of Oklahoma Norman Campus N CoI: Dr. Richard B. C. Henry University of Oklahoma Norman Campus N CoI: Bin Chen University of Oklahoma Norman Campus N ------------------------------------------------------------------------------------ Abstract The inter-stellar medium (ISM) has been well studied in the Milky Way and nearby galaxies. However, less is known about ISM properties of cosmologically distant galaxies. We propose to study the ISM properties of moderate redshift galaxies using lens galaxies, and compare the measurements with the ISM evolution models. In particular, we plan to use COS to measure the gas column denisty through the damped Lyman_alpha absorption system of the lens B1152+199, where our existing constraints on ISM properties are in conflict with ISM evolution model predictions. The COS observations will break the degeneracy between neutral hydrogen column density and metallicity in our existing measurements from the X-ray data, and provide accurate measurements of dust-metal-gas ratios of this galaxy, which will in turn constrain ISM evolution models at z~0.5. ------------------------------------------------------------------------------------ Observations Description ------------------------ COS NUV spectroscopic observations of B1152+199A. B1152+199 is a gravitational lens system containing two quasar images, A and B at z = 1.02 separated by 1.6 arcsec and a lens at z=0.439. We plan to use the G230 (3360) and G230 (2950) gratings to measure the NUV spectra of B1152+199A. We plan to detect the damped lyman alpha and other metal absorption lines associated with the lensing galaxy in the NUV spectra of B1152+199A. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 13283( 3) - 24-Jan-2014 21:44:47 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CLASS-B1152+ GALAXY, QUASAR RA=11H55M18.2976S +/- 0.1", J2000 V = 16.9 16.75 in the U band 199-ABS01 DEC=+19D39'42.23" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 13283( 3) - 24-Jan-2014 21:44:47 - [ 3] 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 CLASS-B1152 COS/NUV ACQ/SEA PSA G230L 3360 CENTER=FLUX-WT-FLR, 1 76.7 S +199-ABS01 RCH SCAN-SIZE=3, STEP-SIZE=1.3 (76.7 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CLASS-B1152 COS/NUV ACQ/IMA PSA MIRRORB 1 95.6 S +199-ABS01 GE (95.6 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CLASS-B1152 COS/NUV TIME-TA PSA G230L 3360 BUFFER-TIME=1454, FP-POS=1 1 381.0 S +199-ABS01 G (381 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CLASS-B1152 COS/NUV TIME-TA PSA G230L 3360 BUFFER-TIME=1454, FP-POS=2 1 381.0 S +199-ABS01 G (381 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CLASS-B1152 COS/NUV TIME-TA PSA G230L 3360 BUFFER-TIME=1454, FP-POS=3 1 381.0 S +199-ABS01 G (381 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 CLASS-B1152 COS/NUV TIME-TA PSA G230L 3360 BUFFER-TIME=1454, FP-POS=4 1 381.0 S +199-ABS01 G see below (710 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CLASS-B1152 COS/NUV TIME-TA PSA G230L 2950 BUFFER-TIME=1470, FP-POS=1 1 1776.3 S +199-ABS01 G see below (2105.3 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 CLASS-B1152 COS/NUV TIME-TA PSA G230L 2950 BUFFER-TIME=1470, FP-POS=2 1 1400.0 S +199-ABS01 G see below (1408 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CLASS-B1152 COS/NUV TIME-TA PSA G230L 2950 BUFFER-TIME=1470, FP-POS=3 1 1434.0 S +199-ABS01 G see below (1442 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 CLASS-B1152 COS/NUV TIME-TA PSA G230L 2950 BUFFER-TIME=1470, FP-POS=4 1 1776.3 S +199-ABS01 G see below (2994.3 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 | ------------------------------------------------------------------------------------------------------------------------------------ 13283( 3) - 24-Jan-2014 21:44:47 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CLASS-B1152+199-ABS 1 COS/NUV ACQ/SEA PSA G230L 3360 none none none none 1 N/A 01 RCH CLASS-B1152+199-ABS 2 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A 01 GE CLASS-B1152+199-ABS 3 COS/NUV TIME-TA PSA G230L 3360 none none none none 1 N/A 01 G CLASS-B1152+199-ABS 4 COS/NUV TIME-TA PSA G230L 3360 none none none none 1 N/A 01 G CLASS-B1152+199-ABS 5 COS/NUV TIME-TA PSA G230L 3360 none none none none 1 N/A 01 G CLASS-B1152+199-ABS 6 COS/NUV TIME-TA PSA G230L 3360 none none none none 2 710.0 S 01 G CLASS-B1152+199-ABS 7 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 2105.3 S 01 G CLASS-B1152+199-ABS 8 COS/NUV TIME-TA PSA G230L 2950 none none none none 3 1408.0 S 01 G CLASS-B1152+199-ABS 9 COS/NUV TIME-TA PSA G230L 2950 none none none none 3 1442.0 S 01 G CLASS-B1152+199-ABS 10 COS/NUV TIME-TA PSA G230L 2950 none none none none 4 2994.3 S 01 G 13283( 3) - 24-Jan-2014 21:44:47 - [ 5] Summary Form for Proposal 13283 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, ACQ/SEARCH, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1454, BUFFER-TIME=1470, CENTER=FLUX-WT-FLR, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, SCAN-SIZE=3, STEP-SIZE=1.3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230L, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names CLASS-B1152+199-ABS01 ------------------------------------------------------------------------------------------------------------------------------------