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 (125) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (14)
· Associated Articles
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Galactic ring nebulae associated with Wolf-Rayet stars. I - Introduction and classification
Authors:
Chu, Y.-H.
Publication:
Astrophysical Journal, Part 1, vol. 249, Oct. 1, 1981, p. 195-200. NSF-supported research. (ApJ Homepage)
Publication Date:
10/1981
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Galactic Structure, Nebulae, Stellar Evolution, Stellar Mass Ejection, Wolf-Rayet Stars, Classifications, Ejecta, H Ii Regions, Line Spectra, Ring Structures
DOI:
10.1086/159275
Bibliographic Code:
1981ApJ...249..195C

Abstract

A list of 15 galactic ring nebulae associated with Wolf-Rayet stars is presented, whose members were chosen so as to ensure that only WR stars are responsible for their excitation. Photographic and kinematic data were used to classify the nebulae according to their formation mechanisms. The types of WR ring nebulae are: (1) shell-structured H II region; (2) amorphous H II region; (3) stellar ejecta; and (4) wind-blown bubble. The stars with which nebulae in these categories are preferentially associated are respectively: (1) WC; (2) late-type WN; (3) WN8; and (4) early-type WN. A probable scheme for the evolution of the stars and the associated ring nebulae is presented, and WR stars with no detectable nebulosity are used as probes to determine the filling factor of the hot, low-density component in the McKee and Ostriker (1977) three-phase model of the interstellar medium.

Associated Articles

Part  1     Part  2     Part  3     Part  7     Part  4     Part  5     Part  6     Part  8    


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