Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (30) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (1)
· Reads History
·
· Translate This Page
Title:
An eight-year spectroscopic orbit for the WC7 + O4 Wolf-Rayet binary HD 193793 - Toward solving the mystery of the infrared outbursts
Authors:
Moffat, Anthony F. J.; Lamontagne, Robert; Williams, Peredur M.; Horn, Jiri; Seggewiss, Wilhelm
Affiliation:
AA(Montreal, Universite, Montreal; Observatoire Astronomique du Mont Megantic, Montreal, Notre-Dame-des-Bois, Canada), AB(Montreal, Universite, Montreal; Observatoire Astronomique du Mont Megantic, Montreal, Notre-Dame-des-Bois, Canada), AC(Royal Observatory, Edinburgh, Scotland), AD(Astronomicka Observator, Ondrejov, Czechoslovakia), AE(Observatorium Hoher List, Daun, Germany)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 312, Jan. 15, 1987, p. 807-811. NSERC-supported research. (ApJ Homepage)
Publication Date:
01/1987
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Binary Stars, Infrared Spectra, Radial Velocity, Stellar Orbits, Stellar Spectrophotometry, Wolf-Rayet Stars, Absorption Spectra, Emission Spectra, Stellar Mass
DOI:
10.1086/164925
Bibliographic Code:
1987ApJ...312..807M

Abstract

Some 60 yr of spectroscopic radial velocity data combined from many different sources lead to a 7.9 yr period for this once enigmatic system. The masses and mass ratio derived are compatible with other close systems containing stars of similar type. It is no coincidence that infrared flux enhancement occurs just before periastron passage in the e = 0.7 orbit.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints