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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 559050.0, MPI für Astronomie / Publikationen_mpia
Truncated disks in TW Hya association multiple star systems
Authors:Andrews, Sean M.; Czekala, Ian; Wilner, D. J.; Espaillat, Catherine; Dullemond, C. P.; Hughes, A. M.
Language:English
Date of Publication (YYYY-MM-DD):2010
Title of Journal:The Astrophysical Journal
Journal Abbrev.:ApJ
Volume:710
Issue / Number:1
Start Page:462
End Page:469
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We present high angular resolution (down to 0.3" = 13 AU in diameter) Submillimeter Array observations of the 880 micron (340 GHz) thermal continuum emission from circumstellar dust disks in the nearby HD 98800 and Hen 3-600 multiple star systems. In both cases, the dust emission is resolved and localized around one stellar component - the HD 98800 B and Hen 3-600 A spectroscopic binaries - with no evidence for circum-system material. Using two-dimensional Monte Carlo radiative transfer calculations, we compare the SMA visibilities and broadband spectral energy distributions with truncated disk models to empirically locate the inner and outer edges of both disks. The HD 98800 B disk appears to be aligned with the spectroscopic binary orbit, is internally truncated at a radius of 3.5 AU, and extends to only 10-15 AU from the central stars. The Hen 3-600 A disk is slightly larger, with an inner edge at 1
Free Keywords:Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2009arXiv0912.3537A [ID No:1]
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