A rotating disk around the very young massive star AFGL 490

Details A rotating disk around the very young massive star AFGL 490 A rotating disk around the very young massive star AFGL 490

2006-01-12

arxiv.org/abs/astro-ph/0601270v1

Astrophys.J. 637 (2006) L129-L132

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures

Scientific paper

10.1086/500732

We observed the embedded, young 8--10 Msun star AFGL 490 at subarcsecond resolution with the Plateau de Bure Interferometer in the C17O (2--1) transition and found convincing evidence that AFGL 490 is surrounded by a rotating disk. Using two-dimensional modeling of the physical and chemical disk structure coupled to line radiative transfer, we constrain its basic parameters. We obtain a relatively high disk mass of 1 Msun and a radius of ~ 1500 AU. A plausible explanation for the apparent asymmetry of the disk morphology is given.

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