On Protostellar Disks in Herbig Ae/Be Stars
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Anatoly S. Miroshnichenko, Professor (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
Abstract: The spectral shape of IR emission from Herbig Ae/Be stars has been invoked as evidence for accretion disks around high-mass protostars. Instead, we present here models based on
spherical envelopes with r -1.5 dust density profile that successfully explain the observed
spectral shapes. The spectral energy distributions (SEDs) of eight primary candidates for protostellar disks are fitted in detail for all wavelengths available, from visual to far IR. The only envelope property adjusted in individual sources is the overall visual optical depth, and
it ranges from 0.3 to 3. In each case, our models properly reproduce the data for both IR excess, visual extinction and reddening. The success of our models shows that accretion disks cannot make a significant contribution to the radiation observed in these pre-main sequence stars.
On Protostellar Disks in Herbig Ae/Be Stars
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Created on 1/1/1996
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Additional Information
- Publication
- arXiv:astro-ph/9611061v1 7 Nov 1996
- Language: English
- Date: 1996
- Keywords
- Accretion, accretion disks, Circumstellar matter, Dust, extinction, Stars: pre-main-sequence