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Evolutionary models of early-type contact binary SV Centauri

Journal Article:

Abstract

Models of the early-type contact binary system SV Centauri are computed with a binary-star evolution program. The effects of mass exchange, i.e., the effects of mass acceptance as well as mass loss, are properly included. With the initial masses of the component stars as 12.4 and 8.0 M sub(solar mass), the following observed configurations are well reproduced; the component stars are definitely in contact and the rate of mass exchange is 4 x 10/sup -4/ M sub(solar mass)yr/sup -1/. The more massive component is less luminous and has a lower effective temperature. Such features are also reproduced quantitatively. Agreement of the computed models with observation indicates that the binary system SV Cen is actually in the phase of rapid mass exchange preceding the mass-ratio reversal.
Authors:
Nakamura, Y; Saio, H; [1]  Sugimoto, Daiichiro
  1. Tohoku Univ., Sendai (Japan). Faculty of Science
Publication Date:
Dec 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-11-501225; EDB-80-052124
Resource Relation:
Journal Name: Publ. Astron. Soc. Jpn.; (Japan); Journal Volume: 30:4
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BINARY STARS; STAR MODELS; DIMENSIONS; GRAPHS; LUMINOSITY; MASS TRANSFER; STAR EVOLUTION; THEORETICAL DATA; DATA; DATA FORMS; INFORMATION; MATHEMATICAL MODELS; NUMERICAL DATA; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; STARS; 640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources
OSTI ID:
5661867
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PASJA
Submitting Site:
INIS
Size:
Pages: 649-655
Announcement Date:
Mar 01, 1980

Journal Article:

Citation Formats

Nakamura, Y, Saio, H, and Sugimoto, Daiichiro. Evolutionary models of early-type contact binary SV Centauri. Japan: N. p., 1978. Web.
Nakamura, Y, Saio, H, & Sugimoto, Daiichiro. Evolutionary models of early-type contact binary SV Centauri. Japan.
Nakamura, Y, Saio, H, and Sugimoto, Daiichiro. 1978. "Evolutionary models of early-type contact binary SV Centauri." Japan.
@misc{etde_5661867,
title = {Evolutionary models of early-type contact binary SV Centauri}
author = {Nakamura, Y, Saio, H, and Sugimoto, Daiichiro}
abstractNote = {Models of the early-type contact binary system SV Centauri are computed with a binary-star evolution program. The effects of mass exchange, i.e., the effects of mass acceptance as well as mass loss, are properly included. With the initial masses of the component stars as 12.4 and 8.0 M sub(solar mass), the following observed configurations are well reproduced; the component stars are definitely in contact and the rate of mass exchange is 4 x 10/sup -4/ M sub(solar mass)yr/sup -1/. The more massive component is less luminous and has a lower effective temperature. Such features are also reproduced quantitatively. Agreement of the computed models with observation indicates that the binary system SV Cen is actually in the phase of rapid mass exchange preceding the mass-ratio reversal.}
journal = {Publ. Astron. Soc. Jpn.; (Japan)}
volume = {30:4}
journal type = {AC}
place = {Japan}
year = {1978}
month = {Dec}
}