Stellar Excesses in WISE and Archival IRS Peak-Up
Abstract
In this study we search for excess infrared emission from circumstellar dust debris disks, measured both with the Wide-Field Infrared Survey Explorer (WISE), and the Spitzer Infrared Spectrograph (IRS) Peak-Up (PU) arrays. The IRS PU data consist of photometry at 16 and 22 μm of stellar sources, serendipitously measured for every targeted spectral observation in the Spitzer mission. The data include measurements of 10,000 stars, distributed over an omni-directional sky area of 5 square degrees. We spatially matched these sources with the all-sky WISE survey, to obtain their photometry at 12 and 22 μm, and with 2MASS, to obtain J, H, and Ks. The 2MASS photometry allows extrapolations of the photospheric SEDs at the WISE and IRS PU bandpasses. We report on the frequency of occurrence of 12, 16, and 22 μm excess emission from debris disks, for each stellar spectral type, in our unique sample of stars.
- Publication:
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American Astronomical Society Meeting Abstracts #217
- Pub Date:
- January 2011
- Bibcode:
- 2011AAS...21733306F