The Circumstellar Environments of Young Stars at AU Scales

Details The Circumstellar Environments of Young Stars at AU Scales The Circumstellar Environments of Young Stars at AU Scales

2006-03-21

arxiv.org/abs/astro-ph/0603554v1

Astronomy and Astrophysics

Astrophysics

to appear in Protostars and Planets V book

Scientific paper

We review recent advances in our understanding of the innermost regions of the circumstellar environment around young stars, made possible by the technique of long baseline interferometry at infrared wavelengths. Near-infrared observations directly probe the location of the hottest dust. The characteristic sizes found are much larger than previously thought, and strongly correlate with the luminosity of the central young stars. This relation has motivated in part a new class of models of the inner disk structure. The first mid-infrared observations have probed disk emission over a larger range of scales, and spectrally resolved interferometry has for the first time revealed mineralogy gradients in the disk. These new measurements provide crucial information on the structure and physical properties of young circumstellar disks, as initial conditions for planet formation.

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