The Morphology of M17-UC1: A Disk Candidate Surrounding a Hypercompact H ii Region | Zendy

M. Nielbock | Zendy; R. Chini | Zendy; V. H. Hoffmeister | Zendy; C. M. Scheyda | Zendy; Jürgen M. Steinacker | Zendy; D. Nürnberger | Zendy; R. Siebenmorgen | Zendy

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The Morphology of M17-UC1: A Disk Candidate Surrounding a Hypercompact H ii Region

Author(s) -

M. Nielbock,

R. Chini,

V. H. Hoffmeister,

C. M. Scheyda,

Jürgen M. Steinacker,

D. Nürnberger,

R. Siebenmorgen

Publication year - 2007

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 - 10.1086/512972

Subject(s) - circumstellar disk , physics , astrophysics , radiative transfer , morphology (biology) , accretion disc , silhouette , accretion (finance) , biology , optics , stars , computer science , machine learning , genetics

We investigate the morphology and the evolutionary stage of the hypercompactHII region M17-UC1 using observations at infrared wavelengths and NIR radiativetransfer modeling. For the first time, this region is resolved into twoemission areas separated by a dark lane reminiscent of an obscuring silhouetteof a circumstellar disk. So far, the observational data as well as modelcalculations suggest that M17-UC1 is surrounded by a disk of cool dust. Thisdirect direct detection of a circumstellar disk candidate around a hypercompactHII region is in agreement with the expectations of the disk accretion modelfor high-mass star formation.Comment: 4 pages, 3 figures, ApJL emulate style (accepted 19 Jan. 2007) to appear in 2007 ApJ Letters 656, No.

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