Evolution and Structure of Very Low Mass Disks Around YSOs (original) (raw)

Abstract

We propose to study the structure and chemistry of disks around young brown dwarfs with very low masses. With the addition of our lowest mass sources, detailed spectral information will be available for dust disks around objects ranging from below the deuterium burning limit to massive HAEBE stars. The new results will help us understand disk physics and the planet formation process by telling us about behavior in an environment where gravitational and radiative influences are very different from those around solar mass stars. We have used data from the Spitzer c2d Legacy survey and a deep IJHK survey to develop a sample of young, low mass (down to 6 MJupiter) brown dwarfs with disks. We have, or will have shortly, the luminosity and spectral type for each source, as well as the spatial distribution of the sample and knowledge of the interstellar environment. With the IRS data we seek to take, we will extend our knowledge of the disk properties by using radiative transfer models to ...

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