Assigned ID: 540 ----- Attempting Submission 1 (Fri Feb 24 18:16:14 GMT 2012) ----- I filled out the APT components after watching all of the demonstration movies. I've packed the exposures in as best as I thought possible. This should hopefully be a relatively straightforward ACS SBC imaging program of two young star binaries. ----- Attempting Submission 1 (Mon Jul 02 20:13:02 GMT 2012) ----- Spatially Resolving the Disk Mass Accretion Process In Young Star Binaries We request HST ACS SBC images in the F140LP and F165LP filters in order to spatially resolve UV emission from H2 gas and scattered light emerging from structures in the planet-forming environments of two young binary systems: GG Tau A and UY Aur. These data, in conjunction with a suite of high-angular resolution ground-based observations -- including spectral images of near-IR H2 emission, mm observations of dust continuum and CO gas emission through allocated ALMA "Cycle 0" observations -- will allow us to characterize the morphology of gas and dust passing between the circumbinary and circumstellar disks. Multi-wavelngth mapping of the distribution of material in GG Tau and UY Aur will reveal the role tidal truncation plays in the formation of planets in binary systems and help to constrain a growing number of hydrodynamic simulations of the complex disk-disk interactions. The observations for this program are straight-forward ACS SBC imaging using the F165LP and F140LP filters. There will be three orbits per filter for each of the two targets in this program. Each orbit will consist of four exposures in an ACS SBC 4pt box dither pattern with total offsets of < 7". There will be a "pos_targ" offset between each orbit so that the dither patterns do not place the stars in the same region of the detector in different exposures. There will be a total of 12 exposures per filter for each of the two targets, for a total of 24 images per source. Hence, there will be a total of 48 images acquired for this program in the allotted 12 orbits. The Phase II observations are set up as: Visit 1: On GG Tau, first 3 orbits execute three 4 point dither patterns in the F140LP filter. Orbits 4-6 execute three 4 point dither patterns in the F165LP filters. Exposure times are on the order of 600-645s per exposure. Visit 2: On UY Aur, orbits 7-9 execute three 4 point dither patterns in the F140LP filter. Orbits 10-12 execute three 4 point dither patterns in the F165LP filters. Exposure times are on the order of 600-645s per exposure. NOTE On Bright Object Flags: For UY Aur, the Bright Object Tool came back with a report that UY Aur is an 05V star that may exceed the health of the SBC MAMA detector! This is totally false. UY Aur is a 12th magnitude late K/early M star. There are no O5 stars within the Taurus/Aurigae star formation complex. The health/safety limits on the SBC MAMA detector should not be exceeded with these observations. STAR FORMATION 12 false 0.0 0.0 false false false false SUPPORTED STAR T TAURI STAR This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 0.6 cts/s in ACS SBC F165LP (estimated) STAR T TAURI STAR This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 0.4 cts/s in ACS SBC F165LP (estimated) ACS/SBC Imaging No No F140LP ACS/SBC Imaging No No F165LP ACS/SBC Imaging No No F140LP ACS/SBC Imaging No No F165LP POS-TARG DITHER 1.79 LINE 1.16 false false 63.65 4 20.02 ACS-SBC-DITHER-BOX 1 false POS-TARG DITHER 1.969 LINE 1.276 false false 63.65 4 20.02 ACS-SBC-DITHER-BOX 2 false POS-TARG DITHER 1.79 LINE 1.16 false false 63.65 4 20.02 ACS-SBC-DITHER-BOX 3 false /Users/tbeck/Dropbox/proposals/HST/OP-cache/Beck_proposal-v01.xml The scheduling data was generated by CASM 20.2. CASM was run in Phase II mode. 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CASM was run in Phase II mode. 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