Poster Presentations Non-axisymmetric Instabilities in Core Collapse Supernovae Shizuka Akiyama, University of Texas at Austin abstract The H II Region of the First Star Marcelo A. Alvarez, University of Texas at Austin abstract Dwarf Galaxies over the last 2 Gyr Fabio D. Barazza, University of Texas at Austin abstract TEXES Observations of Molecular Hydrogen Emission from AB Aur Martin A. Bitner, University of Texas at Austin abstract Low Resolution Phase Resolved Spectra of Polars Ryan K. Campbell, New Mexico State University abstract Weak-line T Tauri Star Disks in the Spitzer c2d Survey of Molecular Clouds: New Constraint on the Timescale for Terrestrial Planet Building Lucas A. Cieza, University of Texas at Austin abstract One of the central goals of the Spitzer Legacy Project "From Molecular Cores to Planet-forming Disks" (c2d) is to determine the frequency of remnant circumstellar disks around weak-line T Tauri stars (wTTs) and to study the properties and evolutionary status of these disks. Here we report on disk frequency in a sample of over 200 spectroscopically identified wTTs in the c2d IRAC and MIPS maps of the Ophiuchus Lupus and Perseus Molecular Clouds. We find that ~20 % of the wTTs in the sample have noticeable IR-excesses indicating the presence of a circumstellar disk. From their location in the H-R diagram we find that the stars with excess belong to the younger part of the age distribution. Still up to 50% of the apparently youngest stars in the sample show no evidence of IR excess. This suggests that the circumstellar disks of an important fraction of pre-main-sequence stars dissipate on a timescale of ~1 Myr. We also find that none of the stars older than ~10 Myrs in our sample have detectable circumstellar disks. This age for the oldest stars with presumably primordial disks is very similar to that presented by Strom et al. (1989) over fifteen years ago based on K-band identified inner disks (r≤0.1 AU). However, since Spitzer observations probe the terrestrial planet-forming region of the disk (r~1 AU) and are capable of detecting IR excesses produced by very small amounts of dust these results provide much stronger constraints on the time available for the formation of terrestrial planets than those provided by previous studies based on detections of disks in the near-IR. The Mass Assembly History of Galaxies Niv Drory, University of Texas at Austin abstract Is Sersic Index a Good Pseudobulge Diagnostic? David B. Fisher, University of Texas at Austin abstract The Dark Halo in NGC 821 Amy D. Forestell, University of Texas at Austin abstract Mid-IR Spectroscopy of Red 2MASS AGN Lei Hao, Cornell University abstract White Dwarfs and Stellar Evolution Jason S. Kalirai, University of California at Santa Cruz abstract Cosmological Implications of a Solid Upper Mass Limit Placed on DFSZ Axions Thanks To Pulsating White Dwarfs Agnes B. Kim, University of Texas at Austin abstract Ice Absorption toward Background Stars Claudia Knez, University of Texas at Austin abstract Hi-Resolution Spectroscopy of a Volume-Limited Hipparcos Sample within 100 pc Pey Lian Lim, New Mexico State University abstract Low Carbon limits in Type Ia Supernovae Howie Marion, University of Texas at Austin abstract Modeling Swift GRB Prompt Gamma-ray Emissions Erin M. McMahon, University of Texas at Austin abstract Solving the Riddle of Convection with Pulsating White Dwarfs Michael H. Montgomery, University of Texas at Austin abstract Stellar Populations in Bulges of Spiral Galaxies Bhasker K. Moorthy, New Mexico State University abstract Searching for Planets around Pulsating White Dwarf Stars Fergal Mullally, University of Texas at Austin abstract Evidence for a Black Hole in the center of Omega-Cen Eva Noyola, University of Texas at Austin abstract Texas Supernova Search: A Wide Field Search for Nearby Supernovae Robert M. Quimby, University of Texas at Austin abstract Photometry of Near Earth Asteroids at McDonald Observatory Judit Györgyey Ries, University of Texas at Austin abstract The Black Hole-Bulge Relationship for QSOs in the SDSS DR3 Sarah B. Salviander, University of Texas at Austin abstract Double-Barred Galaxies in N-body Simulations Juntai Shen, University of Texas at Austin abstract The Extended Structure of the Leo II dSph Galaxy Michael H. Siegel, University of Texas at Austin abstract White Dwarf Mode Identifications and Line Shape Variations Susan E. Thompson, Colorado College abstract Modeling Star Formation with Dust Andrea Urban, University of Texas at Austin abstract