0 Assigned ID: 271 ----- Attempting Submission 1 (Fri Feb 24 02:03:10 GMT 2012) ----- HST Phase I Proposal 271 (APT_LBA_Cycle20.apt) successfully submitted. This resubmission corrects the typo "FP-POS=4" in the last exposure of visit 1 to FP-POS=3 The coordinates are accurate to 0.1" We use FP-POS=3 for our entire observation as was requested in the Phase I proposal. In Phase I we mentioned "In order to create a uniform distribution of depth (exposure time) at the red edge of Segment B, all exposures will be taken with a single focal plane offset setting (FP-POS=3)." We are performing target acquisition with MIRRORA in ACQ/IMAGE mode for 45 s and then continuing in the same mode for another 600s to get a better image. If the contact scientist thinks it'll be better to observe the 600s NUV imaging part in the TIMETAG mode, we'll be happy to revert that. The spectroscopic G140L observations are listed in TIMETAG mode. -875338910 ----- Attempting Submission 1 (Tue Jul 03 18:01:53 GMT 2012) ----- ----- Attempting Submission 2 (Sun Nov 25 22:05:07 GMT 2012) ----- The coordinates are accurate to 0.1" We use FP-POS=3 for our entire observation as was requested in the Phase I proposal. In Phase I we mentioned "In order to create a uniform distribution of depth (exposure time) at the red edge of Segment B, all exposures will be taken with a single focal plane offset setting (FP-POS=3)." We are performing target acquisition with MIRRORA in ACQ/IMAGE mode for 45 s and then continuing in the same mode for another 600s to get a better image. If the contact scientist thinks it'll be better to observe the 600s NUV imaging part in the TIMETAG mode, we'll be happy to revert that. The spectroscopic G140L observations are listed in TIMETAG mode. Lyman continuum photons leaking out of massive star forming systems are believed to be the source of ionizing photons that led to reionization of the universe at z>6. However, our understanding of how these photons leaked from their parent galaxies is limited at best. Part of the problem is that the high-redshift galaxies are hard to study. Therefore, we have complied a sample of local galaxies that mimic star-forming Lyman-Break galaxies in every measurable way. We found that a class of these galaxies with Dominant Central Object (DCO) has much higher star-formation rates per unit volume and much faster outflows that can blow away and ionize interstellar medium, thus allowing a significant fraction of their Lyman continuum to escape. We request 9 orbits of HST to observe one such extremely rare galaxy with estimated escape fraction as high as 0.3. This value was estimated from three independent but indirect lines of evidence. These observations will provide the first direct evidence of leaking Lyman continuum emission in these systems. This will be a major step forward in understanding massive star forming systems and how ionizing radiation might have escaped at the epoch of reionization. J092159 is a unique Lyman Break Analog (LBA) galaxy that has a compact massive star forming region (~100 pc with 109Mo) known as a Dominant Compact Object (DCO). In our recent study of eight LBJ092159 is a unique Lyman Break Analog (LBA) galaxy that has a compact massive star forming region (~100 pc with 109Mo) known as a Dominant Compact Object (DCO). In our recent study of eight LBAs including this target with COS (Heckman et al. 2011), we found that galaxies with a DCO drive outflows with velocities much higher than the LBAs without a DCO. These powerful (~1000 km/s) outflows can blow holes through the interstellar medium (ISM) that may allow ionizing photon to escape. We also found indirect evidence of holes in the ISM of this galaxy. The COS spectrum show strong saturated metal absorption-lines (e.g. C II and Si II) in the neutral ISM that are not black suggesting optically thick could partially covering the starburst. They also show blue shifted Lyman alpha in emission further suggesting holes in the ISM of this galaxy. Furthermore, the star formation rate implied by the far-IR plus far-UV continuum luminosity is over three times higher than that implied by the extinction-corrected H alpha emission-line luminosity. Our primary goals of this project is to understand if ionizing radiation is escaping from Lyman Break Galaxy Analogs (LBAs) and if so the physical conditions responsible for it. The project uses COS FUV grating G140L for 9 orbits in order to achieve the above-mentioned goals. The 25500 s observations for the target galaxy with FUV of 19.41 +/- 0.15 mags at 1126 A (Lyman continuum edge of the target galaxy) will result in a S/N >19.2 per resolution element (COS.sp.413287). As a safety check, a magnitude higher source (i.e FUV = 18.4 mag) when observed for 25500 s will yield 213 cts/s for the entire detector (COS.sp.413288). For the target acquisition we use NUV MIRROR A imaging setting for 45 secs (COS.ta.413264). The target galaxy has a NUV magnitude =18.98 +/- 0.07 mags or 18.9 mags in the worst-case scenario based on error estimate. This exposure will have a count rate for the entire detector of 1042 cts/s and for the brightest pixel 15 cts/s. To check the safety of the acquisition exposures, we estimate the counts for an exposure of 45 s for a source 1 mag brighter, i.e. NUV=17.98 mags including the error margin, to 38 cts/s for the brightest pixel (i.e. less than 50 cts/s) and 1205 cts/s for the entire detector (COS.ta.413263). We will observe for another 600 s with MIRRORA after target acquisition for a deeper image. (COS.im.413289) Hence, we conclude that both the exposures are within safe limits for the detectors. As including this target with COS (Heckman et al. 2011), we found that galaxies with a DCO drive outflows with velocities much higher than the LBAs without a DCO. These powerful (~1000 km/s) outflows can blow holes through the interstellar medium (ISM) that may allow ionizing photon to escape. We also found indirect evidence of holes in the ISM of this galaxy. The COS spectrum show strong saturated metal absorption-lines (e.g. C II and Si II) in the neutral ISM that are not black suggesting optically thick could partially covering the starburst. They also show blue shifted Lyman alpha in emission further suggesting holes in the ISM of this galaxy. Furthermore, the star formation rate implied by the far-IR plus far-UV continuum luminosity is over three times higher than that implied by the extinction-corrected H alpha emission-line luminosity. Our primary goals of this project is to understand if ionizing radiation is escaping from Lyman Break Galaxy Analogs (LBAs) and if so the physical conditions responsible for it. The project uses COS FUV grating G140L for 9 orbits in order to achieve the above-mentioned goals. The 25500 s observations for the target galaxy with FUV of 19.41 +/- 0.15 mags at 1126 A (Lyman continuum edge of the target galaxy) will result in a S/N >19.2 per resolution element (COS.sp.413287). As a safety check, a magnitude higher source (i.e FUV = 18.4 mag) when observed for 25500 s will yield 213 cts/s for the entire detector (COS.sp.413288). For the target acquisition we use NUV MIRROR A imaging setting for 45 secs (COS.ta.413264). The target galaxy has a NUV magnitude =18.98 +/- 0.07 mags or 18.9 mags in the worst-case scenario based on error estimate. This exposure will have a count rate for the entire detector of 1042 cts/s and for the brightest pixel 15 cts/s. To check the safety of the acquisition exposures, we estimate the counts for an exposure of 45 s for a source 1 mag brighter, i.e. NUV=17.98 mags including the error margin, to 38 cts/s for the brightest pixel (i.e. less than 50 cts/s) and 1205 cts/s for the entire detector (COS.ta.413263). We will observe for another 600 s with MIRRORA after target acquisition for a deeper image. (COS.im.413289) Hence, we conclude that both the exposures are within safe limits for the detectors. UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE 12 false 0.0 0.0 false false false false SUPPORTED GALAXY STARBURST This object is a LBA galaxy from the sample presented by Heckman et al. 2011 (ApJ, 730, 5) J2000 J2000 GALEX FUV= 19.41 +/- 0.15 ; NUV = 18.91 =/- 0.07 COS/FUV Spectroscopic No No G140L 1280 1353881020479 /private/var/folders/5y/q_w4ww853xbg706t8glpxvyh0000gn/T/OPVisit3297689434126246287.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. 5/9 orbits of G140L at the rest frame Lyman limit of the target at wave_obs=1126 corresponding to z=0.2 to detect escaping Lyman continuum photons from this galaxy. (Tic-Visit :proposal-id 12886 :visit-id "01" :proposal-version -1 :trans-version "20121031" :date "25-Nov-2012 17:03:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 5 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 452512 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12886 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12886 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3032 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "01" :orbit-number 5 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 366 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) true 5 0 1353880987524 /private/var/folders/5y/q_w4ww853xbg706t8glpxvyh0000gn/T/OPVisit70475485400379727.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. 4/9 orbits of G140L at the rest frame Lyman limit of the target at wave_obs=1126 corresponding to z=0.2 to detect escaping Lyman continuum photons from this galaxy. (Tic-Visit :proposal-id 12886 :visit-id "02" :proposal-version -1 :trans-version "20121031" :date "25-Nov-2012 17:03:07.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 365472 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12886 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12886 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3032 :al-overhead-at-end 0 :internal-dur-at-end 124 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "02" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12886 :visit-id "02" :orbit-number 4 :pcs-time 222 :si-vis-utilization 3155 :al-overhead-at-end 0 :internal-dur-at-end 366 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3377 :pcs-gap 0 ) true 4 0