Properties of Circum(sub)stellar Accretion Disks

Details Properties of Circum(sub)stellar Accretion Disks Properties of Circum(sub)stellar Accretion Disks

2002-09-04

arxiv.org/abs/astro-ph/0209079v2

Astronomy and Astrophysics

Astrophysics

To appear in Scientific Frontiers in Research on Extrasolar Planets (ASP Conf. Proc.), in press Figure 3 replaced so that the

Scientific paper

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.

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