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Debris Disks around Solar-type Stars: Observations of the Pleiades with the Spitzer Space Telescope

Sierchio, J. M. and Rieke, G. H. and Su, K. Y. L. and Plavchan, P. and Stauffer, J. R. and Gorlova, N. I. (2010) Debris Disks around Solar-type Stars: Observations of the Pleiades with the Spitzer Space Telescope. Astrophysical Journal, 712 (2). pp. 1421-1432. ISSN 0004-637X.

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We present Spitzer MIPS observations at 24 μm of 37 solar-type stars in the Pleiades and combine them with previous observations to obtain a sample of 71 stars. We report that 23 stars, or 32% ± 6.8%, have excesses at 24 μm at least 10% above their photospheric emission. We compare our results with studies of debris disks in other open clusters and with a study of A stars to show that debris disks around solar-type stars at 115 Myr occur at nearly the same rate as around A-type stars. We analyze the effects of binarity and X-ray activity on the excess flux. Stars with warm excesses tend not to be in equal-mass binary systems, possibly due to clearing of planetesimals by binary companions in similar orbits. We find that the apparent anti-correlations in the incidence of excess and both the rate of stellar rotation and also the level of activity as judged by X-ray emission are statistically weak.

Item Type:Article
Related URLs:
URLURL TypeDescription
Rieke, G. H.0000-0003-2303-6519
Su, K. Y. L.0000-0002-3532-5580
Plavchan, P.0000-0002-8864-1667
Stauffer, J. R.0000-0003-3595-7382
Additional Information:© 2010 American Astronomical Society. Issue 2 (2010 April 1): received 2009 November 16; accepted for publication 2010 February 17; published 2010 March 15. The authors thank Andr´as G´asp´ar for helpful discussions and the anonymous referee for comments which improved the paper. This research has made use of the SIMBAD database and the VizieR catalog access tool, operated at CDS, Strasbourg, France. This work also makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work is also based, in part, on observations made with Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. This work supported by contract 1255094 from Caltech/JPL to the University of Arizona.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:circumstellar matter; infrared: stars; open clusters and associations: individual (Pleiades, Pleiades, Pleiades, Pleiades, Pleiades); stars: solar-type; stars: winds, outflows
Issue or Number:2
Classification Code:PACS: 97.10.Fy; 98.20.Di; 97.10.Kc; 97.10.Me; 95.85.Hp; 97.20.Jg.
Record Number:CaltechAUTHORS:20100405-115307379
Persistent URL:
Official Citation:J. M. Sierchio et al 2010 ApJ 712 1421 doi: 10.1088/0004-637X/712/2/1421
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17856
Deposited By: Jason Perez
Deposited On:05 Apr 2010 20:44
Last Modified:07 Apr 2020 18:32

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