Fixed some typos. 1160370751 Assigned ID: 1122 ----- Attempting Submission 1 (Fri Apr 07 23:32:27 GMT 2017) ----- HST Phase I Proposal 1122 (HST_prop.apt) successfully submitted. Receipt: # 1122-1 ----- Attempting Submission 2 (Fri Apr 07 23:53:01 GMT 2017) ----- Version 1.0 -1939611061 ----- Attempting Submission 1 (Tue Jul 18 00:22:44 GMT 2017) ----- The gravitational lens PMN J0134-0931 is one of only two known non-cluster lenses producing six images of the background source. In this case the source is a quasar located at z=2.2 and the lens plane at z=0.76. It is likely that a small compact group of galaxies are located in the lens plane. The lens modeling for these six-image systems has, however, proven to be extraordinarily complicated and no satisfactory lens model has been produced for this system. PMN J0194-0931 is also unique in the sense that it is one of only two cases where molecular absorption lines are seen against two or more background images, the other one being PKS1830-211. The absorption lines make it possible to probe the kinematics of the lensing galaxies on sub-kpc scales and to determine kinematically derived total masses. Comparing with the mass derived from lens models, it provides a test of the assumed dark matter halo profile. In order to use the absorption lines to constrain the rotation curve it is necessary to know where the sigh lines cross the galaxies, the galaxy center and their inclination. The goal with this proposal is to image the galaxies at z=0.76 that lens the background quasar PMN J0134-0931. At optical and near-infrared wavelengths the highly magnified background quasar dominates the light. Attempts to subtract the quasar light has not produced useable results. We propose to observe PMN J0134-0931 at a wavelength short of the redshifted Lyman limit of the background quasar. This ensures that the quasar is essentially "turned off". This can be accomplished by using the WFC3/F275W filter. The lensing galaxies will be observed in restframe 1500A. This observation consists of imaging of the lens in a gravitational lens system using WFC3/UVIS F275W. At this wavelenght the light from the background QSO is all but extinguished. The exposure time is estimated based on a L* galaxy at the redshift of the lens (z=0.765), but is uncertain. A S/N of 20 should be reached in 7200 sec. The setup is a simple imaging observation. Getting as much exposure time as possible (given the uncertain magnitude of the lens galax(ies)). The angular extent of the lens system is ~2-3". A pre-flash is needed as there are only faint objects in the field of view. The observation is contained in a single visit. Cosmology 6 false true false false false false SUPPORTED GALAXY GRAVITATIONAL LENS This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 WFC3/UVIS Imaging No No F275W POS-TARG MOSAIC DITHER 2 2.4 WFC3-UVIS-MOS-DITH-LINE false true 0.119 3 85.754 POS-TARG WFC3-UVIS-MOS-DITH-LINE 33.606 1 true 1500336226020 The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15324 :visit-id "01" :proposal-version -1 :trans-version "20170613" :date "17-Jul-2017 20:03:45.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1732464 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15324 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15324 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2872 :al-overhead-at-end 122 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3205 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15324 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2982 :al-overhead-at-end 122 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3205 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15324 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 2982 :al-overhead-at-end 122 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3205 :pcs-gap 0 ) false 3 0