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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 308873.0, MPI für Astronomie / Publikationen_mpia
First AU-scale observations of V1647 Orionis with VLTI/MIDI
Authors:Ábrahám, P.; Mosoni, L.; Henning, T.; Kóspál, Á.; Leinert, C.; Quanz, S. P.; Ratzka, T.
Date of Publication (YYYY-MM-DD):2006
Journal Abbrev.:Astronomy and Astrophysics
Volume:449
Start Page:L13
End Page:L16
Audience:Not Specified
Abstract / Description:The young eruptive star V1647 Ori was observed with MIDI, the mid-infrared interferometric instrument at the Very Large Telescope Interferometer (VLTI), on March 2, 2005. We present the first spectrally resolved interferometric visibility points for this object. Our results show that (1) the mid-infrared emitting region is extended, having a size of ≈7 AU at 10 mum; (2) no signatures of a close companion can be seen; (3) the 8{-}13 mum spectrum exhibits no obvious spectral features. Comparison with similar observations of Herbig Ae stars suggests that V1647 Ori probably possesses a disk of moderate flaring. A simple disk model with T~ r-0.53, Sigma~ r-1.5, M_d=0.05 {M}⊙ is able to fit both the spectral energy distribution and the observed visibility values simultaneously.
Free Keywords:stars: formation; techniques: interferometric; stars: circumstellar matter; stars: individual: V1647 Ori; infrared: stars
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi...
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