Program Number | Principal Investigator | Program Title |
---|---|---|
11298 | John P. Subasavage, National Optical Astronomy Observatory - CTIO | Calibrating Cosmological Chronometers: White Dwarf Masses |
11575 | Schuyler D. Van Dyk, Jet Propulsion Laboratory | The Stellar Origins of Supernovae |
11582 | Andrew Blain, California Institute of Technology | The spatial distribution of radiation in the complex ISM of distant ultraluminous galaxies |
11694 | David R. Law, University of California - Los Angeles | Mapping the Interaction between High-Redshift Galaxies and the Intergalactic Environment |
11700 | Michele Trenti, University of Colorado at Boulder | Bright Galaxies at z>7.5 with a WFC3 Pure Parallel Survey |
11734 | Andrew J. Levan, The University of Warwick | The hosts of high redshift gamma-ray bursts |
11741 | Todd Tripp, University of Massachusetts | Probing Warm-Hot Intergalactic Gas at 0.5 < z < 1.3 with a Blind Survey for O VI, Ne VIII, Mg X, and Si XII Absorption Systems |
12019 | Christy A. Tremonti, University of Wisconsin - Madison | After the Fall: Fading AGN in Post-starburst Galaxies |
12041 | James C. Green, University of Colorado at Boulder | COS-GTO: Io Atmosphere/STIS |
12061 | Sandra M. Faber, University of California - Santa Cruz | Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey -- GOODS-South Field, Early Visits of SNe Search |
12163 | Aaron J. Barth, University of California - Irvine | Structure and Stellar Content of the Nearest Nuclear Clusters in Late-Type Spiral Galaxies |
12169 | Boris T. Gaensicke, The University of Warwick | The frequency and chemical composition of planetary debris discs around young white dwarfs |
12178 | Scott F. Anderson, University of Washington | Spanning the Reionization History of IGM Helium: a Highly Efficient Spectral Survey of the Far-UV-Brightest Quasars |
12181 | Drake Deming, NASA Goddard Space Flight Center | The Atmospheric Structure of Giant Hot Exoplanets |
12184 | Xiaohui Fan, University of Arizona | A SNAP Survey for Gravitational Lenses Among z~6 Quasars |
12209 | Adam S. Bolton, University of Utah | A Strong Lensing Measurement of the Evolution of Mass Structure in Giant Elliptical Galaxies |
12210 | Adam S. Bolton, University of Utah | SLACS for the Masses: Extending Strong Lensing to Lower Masses and Smaller Radii |
12212 | D. Michael Crenshaw, Georgia State University Research Foundation | What are the Locations and Kinematics of Mass Outflows in AGN? |
12215 | Nancy R. Evans, Smithsonian Institution Astrophysical Observatory | Searching for the Missing Low-Mass Companions of Massive Stars |
12217 | Philip Lucas, University of Hertfordshire | Spectroscopy of faint T dwarf calibrators: understanding the substellar mass function and the coolest brown dwarfs |
12234 | Wesley Fraser, California Institute of Technology | Differentiation in the Kuiper belt: a search for silicates on icy bodies. |
12245 | Mark R. Showalter, SETI Institute | Orbital Evolution and Stability of the Inner Uranian Moons |
12248 | Jason Tumlinson, Space Telescope Science Institute | How Dwarf Galaxies Got That Way: Mapping Multiphase Gaseous Halos and Galactic Winds Below L* |
12251 | Zachory K. Berta, Harvard University | The First Characterization of a Super-Earth Atmosphere |
12283 | Matthew A. Malkan, University of California - Los Angeles | WFC3 Infrared Spectroscopic Parallel Survey {WISP}: A Survey of Star Formation Across Cosmic Time |
12286 | Hao-Jing Yan, The Ohio State University | Hubble Infrared Pure Parallel Imaging Extragalactic Survey {HIPPIES} |
12291 | John Krist, Jet Propulsion Laboratory | STIS coronagraphy of Spitzer-selected debris disks |
12299 | Michael Eracleous, The Pennsylvania State University | Spectroscopic Signatures of Binary and Recoiling Black Holes |
12307 | Andrew J. Levan, The University of Warwick | A public SNAPSHOT survey of gamma-ray burst host galaxies |
12324 | C. S. Kochanek, The Ohio State University | The Temperature Profiles of Quasar Accretion Disks |
GO 11298: Calibrating Cosmological Chronometers: White Dwarf Masses
GO 11694: Mapping the Interaction between High-Redshift Galaxies and the Intergalactic Environmen
GO 11982: Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars
GALEX image of the nearby spiral, M81 | The reionisation epoch for intergalactic helium is thought to occur somewhere between redshifts 3 and 4. Observations with the GALEX satellite, a NASA small explorer-class mission equipped with a 50-cm diameter telescope, are proving critical in testing this hypothesis through the identification of UV bright quasars in the appropriate redshift range. Galex was launched on 28th April 2003, and continues to operate more than 30 months beyond its nominal lifetime, conducting ultraviolet imaging and low-resolution grism spectroscopy at far-UV (125-175 nm) and near-UV (175-280 nm) wavelengths. Past HST programs by this research have used the ACS/SBC to target sources identified by cross-referencing GALEX against SDSS catalogues of moderate (1 < z < 3) and high redshift (z > 3.1) quasars. These sources can serve as effective probes of the ionisation state of the intergalactic medium at intervening redshifts. In particular, analysis of the He II Lyman-alpha absorption will shed light on the epoch of reionisation of intergalactic helium, generall placed between redshifts 3 and 4. The present program will use the ACS/SBC PR120L prism for spectroscopy of 40 QSOs with redshifts in the range 3.1 < z < 5.1. |
GO 12324: The Temperature Profiles of Quasar Accretion Disks