A Parameter Study of Classical Be Star Disk Models Constrained by Optical Interferometry

Abstract

We have computed theoretical models of circumstellar disks for the classical Be stars kappa Dra, Beta Psc, and upsilon Cyg. Models were constructed using a non-LTE radiative transfer code developed by Sigut and Jones (2007), which incorporates a number of improvements over previous treatments of the disk thermal structure, including a realistic chemical composition. Our models are constrained by direct comparison with long-baseline optical interferometric observations of the H(alpha)-emitting regions and by contemporaneous H(alpha) line profiles. Detailed comparisons of our predictions with H(alpha) interferometry and spectroscopy place very tight constraints on the density distributions for these circumstellar disks.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2008
Accession Number
ADA494654

Entities

People

  • C. E. Jones
  • C. Tycner
  • D. J. Hutter
  • J. A. Benson
  • T. A. Sigut

Organizations

  • Western University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Chemical Composition
  • Emission
  • Equations
  • Interferometers
  • Interferometry
  • Line Spectra
  • Materials
  • Observation
  • Observatories
  • Optical Interferometers
  • Physical Properties
  • Probability
  • Radiative Transfer
  • Spectra
  • Spectroscopy
  • Stellar Atmospheres

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Computational Modeling and Simulation