D
D. W. Hoard
Researcher at California Institute of Technology
Publications - 64
Citations - 2124
D. W. Hoard is an academic researcher from California Institute of Technology. The author has contributed to research in topics: White dwarf & Light curve. The author has an hindex of 26, co-authored 63 publications receiving 2065 citations. Previous affiliations of D. W. Hoard include Pomona College & University of Washington.
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Journal ArticleDOI
A hidden population of massive stars with circumstellar shells discovered with the spitzer space telescope
Stefanie Wachter,Jon C. Mauerhan,Schuyler D. Van Dyk,D. W. Hoard,S. Kafka,S. Kafka,Patrick W. Morris +6 more
TL;DR: In this paper, a large number of circular and elliptical shells at 24 μm around luminous central sources with MIPS on board the Spitzer Space Telescope were discovered, which represents a narrow evolutionary phase, similar to the luminous blue variable stage of massive stellar evolution.
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Constraints on the lifetimes of disks resulting from tidally destroyed rocky planetary bodies
TL;DR: In this article, the spectral energy distribution of metal-polluted, helium and hydrogen atmosphere white dwarfs surveyed with IRAC was analyzed, and it was shown that the typical lifetime of dusty disks is somewhat shorter than the diffusion timescales of helium-rich white dwarf.
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The WIRED Survey. II. Infrared Excesses in the SDSS DR7 White Dwarf Catalog
TL;DR: In this paper, a cross-correlation of the preliminary Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) WD catalog between the WISE, 2MASS, UKIRT Infrared Deep Sky Survey, and SDSS DR7 photometric catalogs is presented.
Journal ArticleDOI
The PTF Orion Project: a Possible Planet Transiting a T-Tauri Star
Julian C. van Eyken,David R. Ciardi,Kaspar von Braun,Stephen R. Kane,Peter Plavchan,Chad F. Bender,Timothy M. Brown,Justin R. Crepp,Benjamin J. Fulton,Andrew W. Howard,Steve B. Howell,Suvrath Mahadevan,Geoffrey W. Marcy,Avi Shporer,Paula Szkody,Rachel Akeson,Charles A. Beichman,Andrew F. Boden,Dawn M. Gelino,D. W. Hoard,Solange V. Ramirez,Luisa Rebull,John R. Stauffer,Joshua S. Bloom,S. Bradley Cenko,Mansi M. Kasliwal,Shrinivas R. Kulkarni,Nicholas M. Law,Peter Nugent,Eran O. Ofek,Dovi Poznanski,Robert M. Quimby,Richard Walters,Carl J. Grillmair,Russ R. Laher,David Levitan,Branimir Sesar,Jason Surace +37 more
TL;DR: In this article, the authors reported observations of a possible young transiting planet orbiting a previously known weak-lined T-Tauri star in the 7-10 Myr old Orion-OB1a/25-Ori region.
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A dusty component to the gaseous debris disk around the white dwarf SDSS J1228+1040
TL;DR: In this paper, the authors present Infrared Spectrometer And Array Camera (ISAAC) spectroscopy and ISAAC, UKIDSS, and Spitzer Space Telescope broadband photometry of SDSS J1228+1040, a white dwarf for which evidence of a gaseous metal-rich circumstellar disk has previously been found from optical emission lines.