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 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 We investigate the composition of unburned material in the outer layers of three normal Type Ia supernovae (SNe Ia) and discover that Oxygen is abundant while Carbon is severely depleted in the outer third of the ejected mass. Pristine matter from a white dwarf progenitor is expected to be a mixture of O and C in approximately equal abundance. Strong features from the OI (λrest= 0.7774 µm) are observed through a wide range of expansion velocities ≈ 9-18x103 kms-1 in near-infrared (NIR 0.7-2.5 µm) spectra from SNe Ia: 2000dn, 2002cr and 2004bw. This large velocity domain corresponds to large radial depth of the supernova. We show that the ionization of C and O are basically the same in this region. CI lines in the NIR are expected to be 7-50 times stronger than those from OI but there is only marginal evidence of CI in the spectra and none of CII. We deduce that for these three normal SNe Ia O is more abundant than C by factors of 102-103. MgII features are also detected in a velocity range similar to that of OI. The presence of O and Mg combined with the absence of C indicates that for these SNe Ia nuclear burning has reached all but the extreme outer layers. Unburned material must have expansion velocities greater than 18x103 kms-1. This favors deflagration to detonation transition (DD) models over pure deflagration models for SNe Ia. 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