Assigned ID: 762 ----- Attempting Submission 1 (Fri Feb 26 23:06:33 GMT 2010) ----- ----- Attempting Submission 1 (Fri Jul 09 09:59:21 GMT 2010) ----- ----- Attempting Submission 2 (Mon Sep 13 18:04:47 GMT 2010) ----- The remaining warnings are visability overruns that amount to <30s. Starburst-driven feedback (both in terms of stellar and supernova activity) is one of the primary engines of galaxy evolution throughout the Universe. Yet, the theoretical foundation of mechanical feedback is, to date, unconstrained by observations. We propose to investigate this fundamental aspect of star formation directly through near-IR narrow-band imaging of Pa-beta emission and the shock-excited [FeII] line in a small but representative sample of nearby (2.5-20 Mpc) starbursts with known H-alpha outflows. These data will allow us to [1] map, and provide a complete census of, the shocks inside and around the starburst regions, and relate these to the potential sources of shocks in the form of the young star-forming regions; [2] measure the supernova (SN) rate in combination with available radio data through calibrations of the [FeII] point-source luminosities, and relate this to the level of mechanical energy deposited by these SNe into the ISM; [3] investigate the relation between the shocked regions and the galaxy morphology, X-ray wind structure, and merger/interaction state, and hence study the conditions under which feedback morphs from a localised process to a galactic-scale phenomenon; [4] study what implications this has on our understanding of star formation histories, and the spatial evolution of star formation in these galaxies. The unprecedented angular resolution, sensitivity, and field-of-view of WFC3/IR is crucial for separating the spatially narrow shock fronts (~20 pc ~ 0.1" at 20 Mpc) and for resolving individual SN remnants.

Exposure times with the IR camera are 3x500s in F128N, 3x200s in F110W, 3x800s in F164N, and 3x300s in F160W for all galaxies except NGC1482. We use the IR-FIX aperture to place the centre of the galaxy near the centre of the IR camera to permit maximum spatial coverage given the unknown orient, and the need to cover the same regions as the previous WFPC2 and ACS imaging. A 3PT SPIRAL dither pattern (based on the WFC3-IR-DITHER-BOX-MIN preset) has been used to sample the point spread function with fractional pixel steps and enable CR and hot pixel rejection. The coords for NGC253 have been offset slightly from the nucleus towards the south-east in order that we cover more of the important southern outflow region. For NGC 1482, we include exposures in the F657N and F621M filters with the UVIS camera and the UVIS-FIX aperture. The recessional velocity of NGC1482 places the Halpha line just on the red shoulder of the F657N filter where the transmission may be reduced to ~70% on the receding side of the galaxy. We have therefore decided to add a 4th F657N exposure to compensate for the reduced transmission and decrease the IR exposure times accordingly. In order to pack the orbits efficiently, we have had to split the F657N exposure times into 4 unequal lengths and make small dithers instead using manual POSTARG offsets. The NGC1482 exposure times are 3x400s in F128N, 3x200s in F110W, 3x700s in F164N, 3x300s in F160W, 3x200s in F621M, and 2246s in F657N. ISM IN EXTERNAL GALAXIES 12 false 0.0 0.0 false false false false false false SUPPORTED GALAXY DWARF COMPACT STARBURST WIND This object was generated by the targetselector and retrieved from the SIMBAD database. J=11.3, H=10.6 J2000 02 54 33.5800 -10 01 39.90 J2000 GALAXY DWARF COMPACT STARBURST WIND This object was generated by the targetselector and retrieved from the SIMBAD database. J=9.0, H=8.5 J2000 13 39 55.9000 -31 38 24.00 J2000 GALAXY SPIRAL STARBURST WIND This object was generated by the targetselector and retrieved from the SIMBAD database. J=8.2, H=7.4 J2000 06 18 37.7100 +78 21 25.30 J2000 GALAXY SPIRAL STARBURST WIND This object was generated by the targetselector and retrieved from the SIMBAD database. J=9.7, H=8.9 J2000 03 54 38.9000 -20 30 8.10 J2000 GALAXY SPIRAL STARBURST WIND This object was generated by the targetselector and retrieved from the SIMBAD database. J=4.8, H=4.1 J2000 00 47 33.1300 -25 17 17.80 J2000 WFC3/IR Imaging No No F164N WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F128N WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F128N WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F164N WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F128N WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F164N WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F128N WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F164N WFC3/UVIS Imaging No No F673N WFC3/UVIS Imaging No No F621M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F128N WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F164N POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 1 false 1284391154606 /private/var/folders/xe/xetsbGDGFQ4+1hNCElC9sk+++TI/-Tmp-/OPVisit556203947787642715.xml The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. Target: NGC 1140 (Tic-Visit :proposal-id 12206 :visit-id "01" :proposal-version -1 :trans-version "20100505" :date "13-Sep-2010 16:19:14.0" :trans-errors '(:WARNINGS 1 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 2245728 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12206 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12206 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2837 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3245 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12206 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3033 :al-overhead-at-end 0 :internal-dur-at-end 312 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3245 :pcs-gap 0 ) true 2 1 1284391166821 /private/var/folders/xe/xetsbGDGFQ4+1hNCElC9sk+++TI/-Tmp-/OPVisit985545293537935626.xml The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. Target: NGC 253 (Tic-Visit :proposal-id 12206 :visit-id "05" :proposal-version -1 :trans-version "20100505" :date "13-Sep-2010 16:19:25.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 2245728 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12206 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12206 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2837 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3257 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12206 :visit-id "05" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3033 :al-overhead-at-end 0 :internal-dur-at-end 312 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3257 :pcs-gap 0 ) true 2 0 1284391455665 /private/var/folders/xe/xetsbGDGFQ4+1hNCElC9sk+++TI/-Tmp-/OPVisit1785926532459265567.xml The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. Target: NGC 2146 (Tic-Visit :proposal-id 12206 :visit-id "04" :proposal-version -1 :trans-version "20100505" :date "13-Sep-2010 16:24:15.0" :trans-errors '(:WARNINGS 2 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 2402416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12206 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12206 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3337 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3633 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12206 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3433 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3633 :pcs-gap 0 ) true 2 2 1284391193196 /private/var/folders/xe/xetsbGDGFQ4+1hNCElC9sk+++TI/-Tmp-/OPVisit8707297592090750931.xml The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. Target: NGC 5253 (Tic-Visit :proposal-id 12206 :visit-id "03" :proposal-version -1 :trans-version "20100505" :date "13-Sep-2010 16:19:52.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 2245728 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12206 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12206 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2837 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3275 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12206 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3033 :al-overhead-at-end 0 :internal-dur-at-end 312 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3275 :pcs-gap 0 ) true 2 0 1284401025130 The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. /private/var/folders/xe/xetsbGDGFQ4+1hNCElC9sk+++TI/-Tmp-/OPVisit4222496681454711838.xml Target: NGC 1482 IR+ UVIS (F657N, F621M) observations (Tic-Visit :proposal-id 12206 :visit-id "02" :proposal-version -1 :trans-version "20100505" :date "13-Sep-2010 19:03:44.0" :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 4423648 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12206 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12206 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2916 :al-overhead-at-end 116 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3249 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12206 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3025 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3249 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12206 :visit-id "02" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3011 :al-overhead-at-end 0 :internal-dur-at-end 369 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3249 :pcs-gap 0 ) true 3 0