A Rotating Disk around the Very Young Massive Star AFGL 490 | Zendy

K. Schreyer | Zendy; D. Semenov | Zendy; Th. Henning | Zendy; Jan Forbrich | Zendy

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A Rotating Disk around the Very Young Massive Star AFGL 490

Author(s) -

K. Schreyer,

D. Semenov,

Th. Henning,

Jan Forbrich

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/500732

Subject(s) - star (game theory) , astronomy , astrophysics , debris disk , physics , stars , planetary system

We observed the embedded, young 8--10 Msun star AFGL 490 at subarcsecondresolution with the Plateau de Bure Interferometer in the C17O (2--1)transition and found convincing evidence that AFGL 490 is surrounded by arotating disk. Using two-dimensional modeling of the physical and chemical diskstructure coupled to line radiative transfer, we constrain its basicparameters. 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 diskmorphology is given.Comment: 4 pages, 5 figure

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