Constraining the Physical Parameters of the Circumstellar Disk of chi Ophiuchi

Abstract

We present a numerical model describing a circularly symmetric gaseous disk around the Be star chi Ophiuchi. The model is constrained by long-baseline interferometric observations that are sensitive to the H-alpha Balmer line emission from the disk. For the first time our interferometric observations spatially resolve the inner region of the circumstellar disk around chi Ophiuchi and we use these results to place a constraint on the physical extent of the H-alpha-emitting region. We demonstrate how this in turn results in very specific constraints on the parameters that describe the variation of the gas density as a function of radial distance from the central star.

Accepted for publication in ApJ

References in corpus (3)

• Effects of gravitational darkening on the determination of fundamental parameters in fast rotating B-type stars
• The Thermal Structure of the Circumstellar Disk Surrounding the Classical Be Star gamma Cassiopeia
• Constraining Disk Parameters of Be Stars using Narrowband H-alpha Interferometry with the NPOI

Cited by in corpus (11)

• The life cycles of Be viscous decretion discs: time-dependent modelling of infrared continuum observations
• Periodic Activities of Repeating Fast Radio Bursts from Be/X-ray Binary Systems
• Be Star Disk Models in Consistent Vertical Hydrostatic Equilibrium
• Binary Red Supergiants II: Discovering and Characterizing B-type Companions
• The X-ray emission of Be+stripped star binaries
• Surveying the Bright Stars by Optical Interferometry III: A Magnitude-Limited Multiplicity Survey of Classical Be-Stars
• Formation and Destiny of White Dwarf and Be Star Binaries
• Quiescent and active phases in Be stars: A WISE snapshot of young galactic open clusters
• Photoionization Models for the Inner Gaseous Disks of Herbig Be Stars: Evidence Against Magnetospheric Accretion?
• Statistical Analysis of Interferometric Measurements of Axis Ratios for Classical Be Stars
• Study of a Sample of Faint Be Stars in the Exofield of CoRoT. Part III. Global Spectroscopic Characterization and Astrophysical Parameters of the Central Stars