NOAO >   Observing Info >   Approved Programs >   2014A-0206

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Proposal Information for 2014A-0206


PI: Deborah Padgett, NASA/Goddard Space Flight Center, deborah.l.padgett@nasa.gov
Address: Code 665, 8800 Greenbelt Road, Greenbelt, MD 20771, USA

CoI: Raquel Martinez, Goddard Space Flight Center
CoI: Farisa Morales, Jet Propulsion Laboratory
CoI: Karl Stapelfeldt, NASA/Goddard Space Flight Center

Title: Characterization of WISE Debris Disk Stars - 2014A

Abstract: We propose to acquire low dispersion spectra with the SOAR Goodman Spectrograph of new debris disk stars identified from the Wide-field Infrared Survey Explorer (WISE survey of the entire sky. Despite many targeted surveys for stellar disks in the solar neighborhood by Spitzer Space Telescope, the census of disks remains incomplete at mid-IR sensitivity levels better than the IRAS limits. The improved sensitivity and spatial resolution of the all-sky WISE survey for debris disks (Padgett et al. 2013, submitted) has recently improved this situation, identifying Hipparcos and Tycho stars with mid-infrared excess out to distances of 120 pc. With the SOAR spectrograph we will characterize the new candidate debris disk stars in the southern sky, providing a uniform set of stellar classifications and information on a range of spectroscopic activity indicators related to stellar age. These data will help to constrain the stellar properties of an important new set of solar neighbors with evidence of planetary systems.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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