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Abstract
Infrared and millimeter-wave emission from Herbig Ae/Be stars has produced conflicting conclusions regarding the dust geometry in these objects. We show that the compact dimensions of the millimeter-wave-emitting regions are a decisive indication for disks. But a disk cannot explain the spectral energy distribution unless it is embedded in an extended envelope that (1) dominates the IR emission and (2) provides additional disk heating on top of the direct stellar radiation. Detailed radiative transfer calculations based on the simplest model for envelope-embedded disks successfully fit the data from UV to millimeter wavelengths and show that the disks have central holes. This model also resolves naturally some puzzling results of IR imaging.
Document Type
Article
Publication Date
8-1-1999
Digital Object Identifier (DOI)
http://dx.doi.org/10.1086/312159
Repository Citation
Miroshnichenko, Anatoly; Ivezić, Željko; Vinković, Dejan; and Elitzur, Moshe, "Dust Emission from Herbig AE/BE Stars: Evidence for Disks and Envelopes" (1999). Physics and Astronomy Faculty Publications. 217.
https://uknowledge.uky.edu/physastron_facpub/217
Notes/Citation Information
Published in The Astrophysical Journal Letters, v. 520, no. 2, p. L115-L118.
© 1999. The American Astronomical Society. All rights reserved.
The copyright holder has granted permission for posting the article here.