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 (41) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (2)
· Reads History
·
· Translate This Page
Title:
Observations of the circumstellar gas shells around Betelgeuse and Antares
Authors:
Bernat, A. P.; Lambert, D. L.
Affiliation:
AA(Texas, University, Austin; McDonald Observatory, Fort Davis, Tex.), AB(Texas, University, Austin; McDonald Observatory, Fort Davis, Tex.)
Publication:
Astrophysical Journal, vol. 201, Nov. 1, 1975, pt. 2, p. L153-L156. (ApJL Homepage)
Publication Date:
11/1975
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Line Spectra, M Stars, Stellar Atmospheres, Stellar Spectra, Supergiant Stars, Absorption Spectra, Electrophotometers, Emission Spectra, Radiative Transfer, Resonance Scattering
Comment:
A&AA ID. AAA014.114.346
DOI:
10.1086/181964
Bibliographic Code:
1975ApJ...201L.153B

Abstract

Results are presented on the direct observations of the circumstellar shell around alpha-Ori, along with new observations of the Ca II infrared triplet lines which provide lower limits for the Ca(+) shell radii for alpha-Ori and alpha-Sco (Antares). The 8542-A line in alpha-Ori does not show a circumstellar absorption core, and the shell radius limit is estimated to be at least 31 times stellar radius. A 108-mA circumstellar core is observed in the 8542-A line in Antares for which a shell radius equal to 4.0 times stellar radius is suggested. The discovery of circumstellar emission through resonance line scattering will provide valuable additional information on the physical conditions in the shell.

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)

  New!

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