0 Assigned ID: 1101 ----- Attempting Submission 1 (Tue Feb 26 21:32:06 GMT 2013) ----- HST Phase I Proposal 1101 (J1602_HST.apt) successfully submitted. ----- Attempting Submission 2 (Fri Mar 01 17:53:25 GMT 2013) ----- HST Phase I Proposal 1101 (J1602_HST.apt) successfully submitted. 0 ----- Attempting Submission 1 (Wed Jun 26 18:06:32 GMT 2013) ----- A Candidate Gravitationally Lensed Quasar at z=6.09 We have obtained WFC3/IR images of nearly half of the known quasars at z~6 through a Cycle 18 SNAP program. During the latter part of the Cycle we identified a candidate gravitationally lensed quasar, SDSSJ1602+4228, at z=6.09. The short duration SNAP exposure shows that the central arcsecond is resolved into multiple emission features, which we interpret as two lensed images of the z=6 quasar and the lens galaxy. However, from the single band image the nature of the components is inconclusive. We propose a brief (two orbit) follow-up program that will include imaging in three bands: WFC3/IR Y and H, and ACS/WFC R-band. The combination of infrared and optical imaging will allow us to use color information to isolate the quasar images, lens galaxy, or any contaminating foreground objects. The confirmation of even one lensed quasar among the SNAP sample has strong implications for the shape of the quasar luminosity function at z=6, with further implications for expected source counts at higher redshift, as well as models for black hole growth in the early Universe. J1602+4228 is a z=6.09 quasar that is a candidate gravitational lens based on the morphology of a WFC3 SNAP image obtained in Cycle 18. The SNAP image shows a bright PSF component associated with the known quasar, as well as a putative secondary PSF component and extended emission on ~1'' scales. This program will test the lensing hypothesis for this object by using optical and infrared color information to discriminate foreground objects from those at the redshift of the quasar. One orbit with WFC3/IR will be split between F105W and F160W. The observations will use optimal dithering with a 4-pt box pattern and the WFC3 IR aperture. The integrations in each band are 7xSPARS50 for 350s at each dither point. A second orbit will use ACS/WFC with the F606W filter, and will similarly employ a 4-pt box pattern with 567s individual exposure times. AGN/QUASARS 12 false false 0.0 0.0 false false false SUPPORTED GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY QSO J2000 J2000 z(AB)=19.9 WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F625W POS-TARG DITHER 0.265 LINE 0.187 false false 69.05 4 20.67 ACS-WFC-DITHER-BOX 1 false POS-TARG DITHER 0.572 LINE 0.365 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 2 false /home/ian/research/hizQSO/HSTsnap/lenses/J1602+4228/phase2/OP-cache/J1602_HST-v01.xml The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13356 :visit-id "01" :proposal-version -1 :trans-version "20130502" :date "26-Jun-2013 09:14:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13356 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13356 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2998 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0 /home/ian/research/hizQSO/HSTsnap/lenses/J1602+4228/phase2/OP-cache/J1602_HST-v02.xml The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13356 :visit-id "02" :proposal-version -1 :trans-version "20130502" :date "26-Jun-2013 10:40:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1114176 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13356 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13356 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2900 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0