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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 448197.0, MPI für Astronomie / Publikationen_mpia
Mid-infrared interferometry of massive young stellar objects. I. VLTI and Subaru observations of the enigmatic object M8E-IR
Authors:Linz, H.; Henning, Th; Feldt, M.; Pascucci, I.; van Boekel, R.; Men'shchikov, A.; Stecklum, B.; Chesneau, O.; Ratzka, Th; Quanz, S. P.; Leinert, Ch; Waters, L. B. F. M.; Zinnecker, H.
Date of Publication (YYYY-MM-DD):2009
Title of Journal:Astronomy and Astrophysics
Journal Abbrev.:A & A
Start Page:655
End Page:661
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Context: Our knowledge of the inner structure of embedded massive young stellar objects is still quite limited. Thus, it is difficult to decide to what extent the mass accumulation onto forming massive stars differs from the process of low-mass star formation. Aims: We attempt to overcome the spatial resolution limitations of conventional thermal infrared imaging. Methods: We employed mid-infrared interferometry using the MIDI instrument on the ESO/VLTI facility to investigate M8E-IR, a well-known massive young stellar object suspected of containing a circumstellar disk. Spectrally dispersed visibilities in the 8-13 mum range have been obtained at seven interferometric baselines. Results: We resolve the mid-infrared emission of M8E-IR and find typical sizes of the emission regions of the order of 30 milliarcseconds (\cor45 AU). Radiative transfer simulations were performed to interpret the data. The fitting of the spectral energy distribution, in combination with the measured visibilities, does not provide evidence for an extended circumstellar disk with sizes ⪆100
Free Keywords:stars: formation; techniques: interferometric; radiative transfer; stars:; individual: M8E-IR
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2009A%26A...505..655... [ID No:1]
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