Spitzer 24 μm Survey of Debris Disks in the Pleiades
Abstract
We performed a 24 μm 2° × 1° survey of the Pleiades cluster, using the MIPS instrument on Spitzer. Fifty-four members ranging in spectral type from B8 to K6 show 24 μm fluxes consistent with bare photospheres. All Be stars show excesses attributed to free-free emission in their gaseous envelopes. Five early-type stars and four solar-type stars show excesses indicative of debris disks. We find a debris disk fraction of 25% for B-A members and 10% for F-K3 ones. These fractions appear intermediate between those for younger clusters and for the older field stars. They indicate a decay with age of the frequency of the dust production events inside the planetary zone, with similar timescales for solar-mass stars as have been found previously for A stars.
Additional Information
© 2006 American Astronomical Society. Received 2006 February 27; accepted 2006 June 1. We would like to thank the referee for comments that helped clarify the paper. This work was supported by JPL/Caltech under contract 1255094.Attached Files
Published - GORapj06a.pdf
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Additional details
- Eprint ID
- 23665
- Resolver ID
- CaltechAUTHORS:20110513-112729212
- 1255094
- JPL/Caltech
- Created
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2011-05-13Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field