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Spatially resolved optical and near-infrared spectroscopy of I Zw 18Long-slit optical and near-IR spectroscopy are presented for the bright NW and faint SE components of the oxygen-poor H II galaxy I Zw 18, yielding physical conditions and O, N, S, and He abundances for these components. All of the elemental abundances for the two components of I Zw 18 are equal (within errors), thereby placing constraints on evolutionary theories for this system.
Document ID
19930062226
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Skillman, Evan D.
(Minnesota Univ. Minneapolis, United States)
Kennicutt, Robert C., Jr.
(Steward Observatory Tucson, AZ, United States)
Date Acquired
August 16, 2013
Publication Date
July 10, 1993
Publication Information
Publication: Astrophysical Journal - Part 1
Volume: 411
Issue: 2
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A46223
Funding Number(s)
CONTRACT_GRANT: NSF AST-90-19150
CONTRACT_GRANT: NAGW-3189
CONTRACT_GRANT: NSF AST-89-96123
Distribution Limits
Public
Copyright
Other

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