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Dust Around Herbig Ae Stars: Additional Constraints from their Photometric and Polarimetric VariabilityFor the Herbig Ae stars with Algol-like minima (UX Ori, WW Vul, etc), the effects of circumstellar dust include: excess infrared emission, anomalous ultraviolet extinction, the 'blueing' of the stars in minima accompanying by an increase of intrinsic polarization. Using a Monte-Carlo code for polarized radiation transfer we have simulated these effects and compared the results obtained for different models with the observational data available. We found that the photometric and polarimetric behavior of the stars provided essential additional constraints on the circumstellar dust models. The models with spheroidal shell geometry and compact (non-fluffy) dust grains do not appear to be able to explain all the data.
Document ID
19970007829
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Krivova, N. A.
(Institute of Astronomy Wroclaw, Poland)
Ilin, V. B.
(Max-Planck-Inst., Jena Gera, Germany)
Fischer, O.
(Jena Univ. Germany)
Date Acquired
August 17, 2013
Publication Date
October 1, 1996
Publication Information
Publication: From Stardust to Planetesimals: Contributed Papers
Subject Category
Astronomy
Accession Number
97N14450
Funding Number(s)
CONTRACT_GRANT: MEN/NSF-94-196
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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