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A Trend Between Cold Debris Disk Temperature and Stellar Type: Implications for the Formation and Evolution of Wide-Orbit Planets

Published online by Cambridge University Press:  06 January 2014

Nicholas P. Ballering ,
George H. Rieke ,
Kate Y. L. Su  and
Edward Montiel
Nicholas P. Ballering
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ, USA
George H. Rieke
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ, USA
Kate Y. L. Su
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ, USA
Edward Montiel
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ, USA Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA, USA
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Abstract

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Cold debris disks have the potential to answer many outstanding questions in wide-orbit planet formation and evolution. We characterized the infrared excess SEDs of 174 cold debris disks with Spitzer IRS and MIPS. We found a trend between the temperature of the disks and the stellar type of the stars they orbit. This argues against the importance of strictly temperature-dependent processes (e.g. ice lines) in setting the dimensions of cold debris disks. We also found no evidence that delayed stirring causes the trend. The trend may result from outward planet migration that traces the extent of the primordial protoplanetary disk, or from planet formation that halts at an orbital radius limited by the efficiency of core accretion. For the full details of this work, see Ballering et al. (2013).

Keywords

circumstellar matter – infrared: stars – interplanetary medium
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 326 - 327
Copyright
Copyright © International Astronomical Union 2013 

References

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