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Evolution of viscous discs. 3. Giant discs in symbiotic stars

Abstract

The structure of time-dependent accretion discs in giant binaries with separation of the order of 10/sup 13/ cm is examined. Radiative ..cap alpha..-viscosity discs with ..cap alpha.. of order unity accreting on to main-sequence stars at accretion rates which generate luminosities greater than a giant companion decay on time-scales of the same order as the binary period, unlike those in dwarf nova binaries which decay on time-scales 100 times longer than the binary period. This results from the lower gravitational potential and consequent larger disc thickness (relative to the radius) of luminous 'giant' discs accreting at high accretion rates. The eruptions of the symbiotic binary C I Cygni are modelled by an ..cap alpha.. = 1 disc with outer radius 8.5 x 10/sup 12/ cm and a sequence of five mass-transfer bursts at rates between 1.5 x 10/sup 21/ and 4 x 10/sup 22/g s/sup -1/.
Authors:
Bath, G T; [1]  Pringle, J E [2] 
  1. Oxford Univ. (UK). Dept. of Astrophysics
  2. Cambridge Univ. (UK). Inst. of Astronomy
Publication Date:
Oct 01, 1982
Product Type:
Journal Article
Reference Number:
AIX-14-777788; EDB-83-163550
Resource Relation:
Journal Name: Mon. Not. R. Astron. Soc.; (United Kingdom); Journal Volume: 201:1
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BINARY STARS; ACCRETION DISKS; MAIN SEQUENCE STARS; STAR ACCRETION; STAR MODELS; TIME DEPENDENCE; MATHEMATICAL MODELS; STAR EVOLUTION; STARS; 640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources
OSTI ID:
5851839
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: MNRAA
Submitting Site:
HEDB
Size:
Pages: 345-355
Announcement Date:
Aug 01, 1983

Citation Formats

Bath, G T, and Pringle, J E. Evolution of viscous discs. 3. Giant discs in symbiotic stars. United Kingdom: N. p., 1982. Web.
Bath, G T, & Pringle, J E. Evolution of viscous discs. 3. Giant discs in symbiotic stars. United Kingdom.
Bath, G T, and Pringle, J E. 1982. "Evolution of viscous discs. 3. Giant discs in symbiotic stars." United Kingdom.
@misc{etde_5851839,
title = {Evolution of viscous discs. 3. Giant discs in symbiotic stars}
author = {Bath, G T, and Pringle, J E}
abstractNote = {The structure of time-dependent accretion discs in giant binaries with separation of the order of 10/sup 13/ cm is examined. Radiative ..cap alpha..-viscosity discs with ..cap alpha.. of order unity accreting on to main-sequence stars at accretion rates which generate luminosities greater than a giant companion decay on time-scales of the same order as the binary period, unlike those in dwarf nova binaries which decay on time-scales 100 times longer than the binary period. This results from the lower gravitational potential and consequent larger disc thickness (relative to the radius) of luminous 'giant' discs accreting at high accretion rates. The eruptions of the symbiotic binary C I Cygni are modelled by an ..cap alpha.. = 1 disc with outer radius 8.5 x 10/sup 12/ cm and a sequence of five mass-transfer bursts at rates between 1.5 x 10/sup 21/ and 4 x 10/sup 22/g s/sup -1/.}
journal = []
volume = {201:1}
journal type = {AC}
place = {United Kingdom}
year = {1982}
month = {Oct}
}