The Influence of Environment on Star Forming Disks

I attempted reversing the orient so that the WFC3 is now east of the ACS, but they still sample the same line on the sky. Please check these for guide star issues. 951952354 ----- Attempting Submission 2 (Thu Jun 13 20:00:31 GMT 2013) ----- The Influence of Environment on Star Forming Disks We propose two single-orbit pointings in the outer NGC 300 disk to extend our measurements of the evolution of the disk structure from 4 scale lengths to 12 scale lengths, matching the radial coverage for the 2 other nearby bulgeless spiral disks, M33 and NGC 2403. With these data, we can measure the star formation rate density to levels well below those probed by GALEX, and we can measure radial trends for different stellar populations. These measurements will distinguish the role of environment in warping the NGC 300 gas disk and will test our tentative result from available HST data that the evolution of the NGC 300 disk mimics that of NGC 2403 and is distinct from that of M33. This result, awaiting confirmation with resolved stellar photometry of the NGC 300 outer disk, suggests that the relatively isolated environments of NGC 2403 and NGC 300 have resulted in significantly different disk structure evolution for galaxies of very similar mass, metallicity, star formation rate, and morphology. We will take parallel imaging data in F606W and F814W. Obtaining 2 exposures per filter, per camera, per visit. We will not dither so that we can optimally remove cosmic rays from the data. RESOLVED STELLAR POPULATIONS Default false false false false false SUPPORTED GALAXY DISK J2000 J2000 GALAXY DISK J2000 J2000 ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. /tmp/OPVisit3269112176992138025.xml 1371153603136 (Tic-Visit :proposal-id 13461 :visit-id "01" :proposal-version -1 :trans-version "20130502" :date "13-Jun-2013 13:00:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13461 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13461 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2951 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3287 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. /tmp/OPVisit1231255267118414013.xml 1371153606471 (Tic-Visit :proposal-id 13461 :visit-id "02" :proposal-version -1 :trans-version "20130502" :date "13-Jun-2013 13:00:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13461 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13461 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2951 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3287 :pcs-gap 0 ) true 1 0