Physical properties of beta Lyr A and its opaque accretion disk

Abstract

Mass exchange and mass loss in close binaries can significantly affect their evolution, but a complete self-consistent theory of these processes is still to be developed. Processes such as radiative shielding due to a~hot-spot region, or a~hydrodynamical interaction of different parts of the gas stream have been studied previously. In order to test the respective predictions, it is necessary to carry out detailed observations of binaries undergoing the largescale mass exchange, especially for those that are in the rapid transfer phase. \bla is an archetype of such a system, having a long and rich observational history. Our goal for this first study is to quantitatively estimate the geometry and physical properties of the optically thick components, namely the Roche-lobe filling mass-losing star, and the accretion disk surrounding the mass-gaining star of \blae. A series of continuum visible and NIR spectro-interferometric observations by the NPOI, CHARA/MIRC and VEGA instruments covering the whole orbit of \bla acquired during a~two-week campaign in 2013 were complemented with \ubvr\ photometric observations acquired during a three-year monitoring of the system. We included NUV and FUV observations from OAO~A-2, IUE, and Voyager satellites.

References in corpus (33)

• emcee: The MCMC Hammer
• The Gaia mission
• Validation of the new Hipparcos reduction
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
• The VizieR database of Astronomical Catalogues
• A Grid of NLTE Line-Blanketed Model Atmospheres of O-type Stars
• A Grid of NLTE Line-Blanketed Model Atmospheres of Early B-type Stars
• First Results from the CHARA Array. II. A Description of the Instrument
• A three-dimensional Galactic extinction model
• Imaging the Surface of Altair
• First Resolved Images of the Eclipsing and Interacting Binary Beta Lyrae
• A CHARA Array Survey of Circumstellar Disks around Nearby Be-type Stars
• Eclipsing Binary Stars as Benchmarks for Trigonometric Parallaxes in the Gaia Era
• POLLUX : a database of synthetic stellar spectra
• SearchCal: a Virtual Observatory tool for searching calibrators in optical long baseline interferometry. I: The bright object case
• Resolving Vega and the inclination controversy with CHARA/MIRC
• A Data Exchange Standard for Optical (Visible/IR) Interferometry
• A simple model of the reflection effect for the interacting binaries and extrasolar planets
• Spin-up and hot spots can drive mass out of a binary
• Critically-rotating accretors and non-conservative evolution in Algols
• Supergiant Temperatures and Linear Radii from Near-Infrared Interferometry
• Building the 'JMMC Stellar Diameters Catalog' using SearchCal
• On the accretion disc and evolutionary stage of beta Lyrae
• Navy Prototype Optical Interferometer Imaging of Line Emission Regions of beta Lyrae Using Differential Phase Referencing
• The Surface Brightness--Color Relations Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions
• Astrometric Positions and Proper Motions of 19 Radio Stars
• Geometrical Constraints on the Hot Spot in Beta Lyrae
• The Invisible Monster Has Two Faces: Observations of Epsilon Aurigae with the Herschel Space Observatory
• Effects of dust on light-curves of εAur type stars
• Accretion disks in Algols: progenitors and evolution
• Phase-dependent X-ray observations of the beta Lyrae system: No eclipse in the soft band
• The origin of the radio emission from beta Lyrae

Cited by in corpus (10)

• Prevalence of SED turndown among classical Be stars: Are all Be stars close binaries?
• The B-type Binaries Characterisation Programme II. VFTS 291: A stripped star from a recent mass transfer phase
• Optically thin circumstellar medium in $\beta$ Lyr A system
• Surveying the Bright Stars by Optical Interferometry III: A Magnitude-Limited Multiplicity Survey of Classical Be-Stars
• On the long cycle variability of the Algol OGLE-LMC-DPV-065 and its stellar, orbital and disk parameters
• Model for the long and orbital brightness variability of the $\beta$ Lyrae type binary OGLE-BLG-ECL-157529
• Unequivocal detection of the tidal deformation of a red giant in a binary system via interferometry
• Hydrodynamical models of the $\beta$ Lyr A circumstellar disc
• Cyclic light variations and accretion disk evolution in the LMC eclipsing binary OGLE-LMC-DPV-062
• Multi-scale radiative-transfer model of the protoplanetary disc DoAr 44