13349( 4) - 11-Jul-2013 12:46:36 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13349 Version: 4 Check-in Time: 11-Jul-2013 12:46:36 STScI Edit Number: 1 Title Escaping Lyman Continuum in Strongly Lensed Galaxies at z=2.0-2.5 ------------------------------------------------------------------------------------ Type Cycle GO 21 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Xiaohui Fan University of Arizona Y CoI: Dr. Fuyan Bian University of Arizona Y CoI: Dr. Linhua Jiang Arizona State University N CoI: Dr. Ian McGreer University of Arizona N ------------------------------------------------------------------------------------ Abstract We propose to obtain deep WFC3 UVIS channel near ultraviolet (NUV) images of a sample of 6 bright lensed galaxies at z = 2.0 - 2.5 to detect the escaping Lyman continuum (LyC) radiation in order to study the physical properties of the LyC emitting region and the evolution of ionizing photon escape fraction with redshift. The LyC escape fraction is a key parameter in determining the contribution of star-forming galaxies to UV ionization background and to the cosmic reionization. It is, however, poorly constrained with conflicting results. In this proposal, we will use the observations of the brightest lensed galaxies (r<21.0) to provide accurate measurement of escape fraction in high-redshift galaxies, sensitive to the flux ratio between intergalactic medium corrected LyC and 1500A of as low as 0.5-3% in individual galaxies, and 0.2% when stacking all galaxies. In addition, lensing effect will allow us to probe a wide range of intrinsic luminosity (-20.5 Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 13349( 4) - 11-Jul-2013 12:46:36 - [ 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 J090122.37+ WFC3/UVI ACCUM UVIS2 F225W FLASH=12 1 1200 S POS TARG -60.00, -25.00; 181432.3 S see below PATTERN 1 1 (8524 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 | ------------------------------------------------------------------------------------------------------------------------------------ J090122.37+181432.3 1 WFC3/UVI ACCUM UVIS2 F225W 1 none none none 1 1384.0 S S J090122.37+181432.3 1 WFC3/UVI ACCUM UVIS2 F225W 2 none none none 1 1384.0 S S J090122.37+181432.3 1 WFC3/UVI ACCUM UVIS2 F225W 3 none none none 2 1439.0 S S J090122.37+181432.3 1 WFC3/UVI ACCUM UVIS2 F225W 4 none none none 2 1439.0 S S J090122.37+181432.3 1 WFC3/UVI ACCUM UVIS2 F225W 5 none none none 3 1439.0 S S J090122.37+181432.3 1 WFC3/UVI ACCUM UVIS2 F225W 6 none none none 3 1439.0 S S 13349( 4) - 11-Jul-2013 12:46:36 - [ 6] 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 J134332.85+ WFC3/UVI ACCUM UVIS2 F218W FLASH=12 1 1200 S POS TARG -60.00, -25.00; 415503.4 S see below PATTERN 1 1 (8792 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 | ------------------------------------------------------------------------------------------------------------------------------------ J134332.85+415503.4 1 WFC3/UVI ACCUM UVIS2 F218W 1 none none none 1 1428.0 S S J134332.85+415503.4 1 WFC3/UVI ACCUM UVIS2 F218W 2 none none none 1 1428.0 S S J134332.85+415503.4 1 WFC3/UVI ACCUM UVIS2 F218W 3 none none none 2 1484.0 S S J134332.85+415503.4 1 WFC3/UVI ACCUM UVIS2 F218W 4 none none none 2 1484.0 S S J134332.85+415503.4 1 WFC3/UVI ACCUM UVIS2 F218W 5 none none none 3 1484.0 S S J134332.85+415503.4 1 WFC3/UVI ACCUM UVIS2 F218W 6 none none none 3 1484.0 S S 13349( 4) - 11-Jul-2013 12:46:36 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 J090002.79+ WFC3/UVI ACCUM UVIS2 F218W FLASH=12 1 1200 S POS TARG -60.00, -25.00; 223403.6 S see below PATTERN 1 1 (8524 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 | ------------------------------------------------------------------------------------------------------------------------------------ J090002.79+223403.6 1 WFC3/UVI ACCUM UVIS2 F218W 1 none none none 1 1384.0 S S J090002.79+223403.6 1 WFC3/UVI ACCUM UVIS2 F218W 2 none none none 1 1384.0 S S J090002.79+223403.6 1 WFC3/UVI ACCUM UVIS2 F218W 3 none none none 2 1439.0 S S J090002.79+223403.6 1 WFC3/UVI ACCUM UVIS2 F218W 4 none none none 2 1439.0 S S J090002.79+223403.6 1 WFC3/UVI ACCUM UVIS2 F218W 5 none none none 3 1439.0 S S J090002.79+223403.6 1 WFC3/UVI ACCUM UVIS2 F218W 6 none none none 3 1439.0 S S 13349( 4) - 11-Jul-2013 12:46:36 - [ 8] 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 J120602.09+ WFC3/UVI ACCUM UVIS2 F218W FLASH=12 1 1200 S POS TARG -60.00, -25.00; 514229.5 S see below GS ACQ SCENARIO BASE1B3; (9082 S) PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ J120602.09+514229.5 1 WFC3/UVI ACCUM UVIS2 F218W 1 none none none 1 1477.0 S S J120602.09+514229.5 1 WFC3/UVI ACCUM UVIS2 F218W 2 none none none 1 1477.0 S S J120602.09+514229.5 1 WFC3/UVI ACCUM UVIS2 F218W 3 none none none 2 1532.0 S S J120602.09+514229.5 1 WFC3/UVI ACCUM UVIS2 F218W 4 none none none 2 1532.0 S S J120602.09+514229.5 1 WFC3/UVI ACCUM UVIS2 F218W 5 none none none 3 1532.0 S S J120602.09+514229.5 1 WFC3/UVI ACCUM UVIS2 F218W 6 none none none 3 1532.0 S S 13349( 4) - 11-Jul-2013 12:46:36 - [ 9] Visit: 05 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 MACS0451 WFC3/UVI ACCUM UVIS2 F218W FLASH=12 1 1200 S POS TARG -60.00, -25.00; S see below PATTERN 1 1 (8480 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 | ------------------------------------------------------------------------------------------------------------------------------------ MACS0451 1 WFC3/UVI ACCUM UVIS2 F218W 1 none none none 1 1376.0 S S MACS0451 1 WFC3/UVI ACCUM UVIS2 F218W 2 none none none 1 1376.0 S S MACS0451 1 WFC3/UVI ACCUM UVIS2 F218W 3 none none none 2 1432.0 S S MACS0451 1 WFC3/UVI ACCUM UVIS2 F218W 4 none none none 2 1432.0 S S MACS0451 1 WFC3/UVI ACCUM UVIS2 F218W 5 none none none 3 1432.0 S S MACS0451 1 WFC3/UVI ACCUM UVIS2 F218W 6 none none none 3 1432.0 S S 13349( 4) - 11-Jul-2013 12:46:36 - [ 10] Visit: 06 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 A2188-EBBEL WFC3/UVI ACCUM UVIS2 F275W FLASH=12 1 1200 S POS TARG -60.00, -25.00; S-FLANKING S see below PATTERN 1 1 (9538 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 | ------------------------------------------------------------------------------------------------------------------------------------ A2188-EBBELS-FLANKI 1 WFC3/UVI ACCUM UVIS2 F275W 1 none none none 1 1553.0 S NG S A2188-EBBELS-FLANKI 1 WFC3/UVI ACCUM UVIS2 F275W 2 none none none 1 1553.0 S NG S A2188-EBBELS-FLANKI 1 WFC3/UVI ACCUM UVIS2 F275W 3 none none none 2 1608.0 S NG S A2188-EBBELS-FLANKI 1 WFC3/UVI ACCUM UVIS2 F275W 4 none none none 2 1608.0 S NG S A2188-EBBELS-FLANKI 1 WFC3/UVI ACCUM UVIS2 F275W 5 none none none 3 1608.0 S NG S A2188-EBBELS-FLANKI 1 WFC3/UVI ACCUM UVIS2 F275W 6 none none none 3 1608.0 S NG S 13349( 4) - 11-Jul-2013 12:46:36 - [ 11] Summary Form for Proposal 13349 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=12 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, PATTERN 1 1, POS TARG -60.00, -25.00 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F218W, F225W, F275W ------------------------------------------------------------------------------------------------------------------------------------ Target Names A2188-EBBELS-FLANKING, J090002.79+223403.6, J090122.37+181432.3, J120602.09+514229.5, J134332.85+415503.4, MACS0451 ------------------------------------------------------------------------------------------------------------------------------------