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Warm Debris Disk Candidates from WISEThe Wide Field Infrared Survey Explorer (WISE) has just completed a sensitive all-sky survey in photometric bands at 3.4, 4.6, 12, and 22 microns. We report on a preliminary investigation of main sequence Hipparcos and Tycho catalog stars with 22 micron emission in excess of photospheric levels. This warm excess emission traces material in the circumstellar region likely to host terrestrial planets and is preferentially found in young systems with ages < 1 Gyr. Nearly a hundred new warm debris disk candidates are detected among FGK stars and 150 A stars within 120 pc. We are in the process of obtaining spectra to determine spectral types and activity level of these stars and are using HST, Herschel and Keck to characterize the dust, multiplicity, and substellar companions of these systems. In this contribution, we will discuss source selection methods and individual examples from among the WISE debris disk candidates.
Document ID
20120001865
Acquisition Source
Goddard Space Flight Center
Document Type
Abstract
Authors
Padgett, Deborah
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stapelfeldt, Karl
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Liu, Wilson
(California Inst. of Tech. Pasadena, CA, United States)
Leisawitz, David
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
October 18, 2011
Subject Category
Astronomy
Report/Patent Number
GSFC.ABS.5549-2011
Meeting Information
Meeting: Signposts of Planets
Location: Greenbelt, MD
Country: United States
Start Date: October 18, 2011
End Date: October 20, 2011
Distribution Limits
Public
Copyright
Public Use Permitted.
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