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 (4)
· Associated Articles
· Reads History
·
· Translate This Page
Title:
H2 and H I emission line imaging of the ring nebula (NGC 6720) [ Erratum: 1988ApJ...332.1092G ]
Authors:
Greenhouse, Matthew A.; Hayward, Thomas L.; Thronson, Harley A., Jr.
Affiliation:
AA(Wyoming Infrared Observatory, Laramie), AB(Wyoming Infrared Observatory, Laramie), AC(Wyoming Infrared Observatory, Laramie)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 15, 1988, p. 604-609. Research supported by the University of Wyoming, NSF, NASA, and USAF. (ApJ Homepage)
Publication Date:
02/1988
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
EMISSION SPECTRA, INFRARED SPECTRA, MOLECULAR SPECTRA, NEBULAE, STELLAR EVOLUTION, ANGULAR DISTRIBUTION, HYDROGEN, INTERSTELLAR EXTINCTION, INTERSTELLAR MATTER, SPECTRUM ANALYSIS
DOI:
10.1086/166031
Bibliographic Code:
1988ApJ...325..604G

Abstract

Infrared emission-line images of the v = 1-0 S(1) transition of molecular hydrogen and Br-gamma recombination line of atomic hydrogen which cover the entire extent of NGC 6720, the Ring nebula. The maps presented here are the highest angular resolution images of these transitions yet produced for this object and have very low relative positional uncertainty. As a result, the spatial stratification of the ionized and shocked molecular zones within the nebula is clearly resolved. These data, and data from the Infrared Astronomical Satellite, are used to determine the H2, H I, and dust mass within the nebula. Energy sources for the dust heating, formation and destruction of the H2, and overall evolution of the nebula are also discussed.

Associated Articles

Main Paper     Erratum    

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