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Astrophysics

Title: Properties of Circum(sub)stellar Accretion Disks

Authors: Michael C. Liu, Alan T. Tokunaga (IfA/Hawaii), Joan Najita (NOAO)
Abstract: We have completed a systematic survey for disks around young brown dwarfs and very low mass stars. By choosing a well-defined sample and by obtaining sensitive thermal IR observations, we can make an unbiased measurement of the disk fraction around such low mass objects. We find that ~75% of our sample show intrinsic IR excesses, indicative of circum(sub)stellar disks. We discuss the physical properties of these disks and their relation to the much better studied disks around solar-mass stars. The high incidence of disks around substellar objects also raises the possibility of planetary systems around brown dwarfs.
Comments: To appear in Scientific Frontiers in Research on Extrasolar Planets (ASP Conf. Proc.), in press Figure 3 replaced so that the version posted here matches the published one, as well as the final ApJ paper (astro-ph/0210523)
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0209079v2

Submission history

From: Michael C. Liu [view email]
[v1] Wed, 4 Sep 2002 20:28:51 GMT (33kb)
[v2] Wed, 6 Nov 2002 01:27:35 GMT (33kb)