Inner Rim of a Molecular Disk Spatially Resolved in Infrared CO Emission Lines | Zendy

Miwa Goto | Zendy; Tomonori Usuda | Zendy; C. P. Dullemond | Zendy; Th. Henning | Zendy; H. Linz | Zendy; B. Stecklum | Zendy; Hiroshi Suto | Zendy

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Inner Rim of a Molecular Disk Spatially Resolved in Infrared CO Emission Lines

Author(s) -

Miwa Goto,

Tomonori Usuda,

C. P. Dullemond,

Th. Henning,

H. Linz,

B. Stecklum,

Hiroshi Suto

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 - 10.1086/506582

Subject(s) - radius , photoevaporation , physics , astrophysics , angular resolution (graph drawing) , infrared , spectroscopy , clearance , astronomy , stars , optics , star formation , computer security , mathematics , combinatorics , computer science , medicine , urology

We present high-resolution infrared spectroscopy of the Herbig Ae star HD141569 A in the CO v=2-1 transition. With the angular resolution attained bythe adaptive optics system, the gas disk around HD 141569 A is spatiallyresolved down to its inner-rim truncation. The size of the inner clearing is11+-2 AU in radius, close to the gravitational radius of the star. The roughcoincidence to the gravitational radius indicates that the viscous accretionworking together with the photoevaporation by the stellar radiation has clearedthe inner part of the disk.Comment: 6 pages, 3 figures, Accepted for publication in the Astrophysical Journa

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