1–4 Aug 2017
Western Michigan University Kalamazoo, MI, USA
US/Eastern timezone

The Bedisk and Beray circumstellar disk codes

2 Aug 2017, 15:00
20m
Western Michigan University Kalamazoo, MI, USA

Western Michigan University Kalamazoo, MI, USA

2350 Business Court, Kalamazoo, MI 49008, USA
Contributed talks Atomic Opacities

Speaker

Dr Aaron Sigut (The University of Western Ontario)

Description

I will describe the operation and atomic data requirements of the Bedisk and Beray codes which can be used to compute synthetic spectra and images for a star surrounded by a circumstellar disk. The Bedisk code computes the thermal structure of the disk based on the central star's photoionizing radiation field by enforcing radiative equilibrium in a gas of a user-specified chemical composition. The code has a large atomic data requirement, including transition probabilities, photoionization cross sections, and effective collision strengths for all atoms and ions included. Detailed line spectra, spectral energy distributions, and synthetic images are computed by the Beray code for comparison to observations. I will also discuss several applications of these codes, including to the classical Be stars, to the pre-main sequence Herbig Be stars, and to the post-main sequence sgB[e] stars.

Primary author

Dr Aaron Sigut (The University of Western Ontario)

Presentation materials