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The reflection nebula NGC 1999The properties of dust particles in regions of recent star formation often seem to be different from the 'average galactic' dust properties. The present investigation is concerned with a determination of the ratio of nebular intensity to the stellar flux for the system NGC 1999/V380 Ori in the ultraviolet. It is found that the stellar flux curve in the ultraviolet agrees surprisingly well with the corresponding curve for the system NGC 7023/HD 200775. This is at least compatible with the assumption that the dust properties in NGC 1999, as well as the basic geometric structure of the reflection nebula, are very similar to those in NGC 7023.
Document ID
19850034820
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/162537
Authors
Cardelli, J. A. (Washington, University Seattle, WA; Kitt Peak National Observatory, Tucson, AZ, United States)
Bohm, K. H. (Washington, University Seattle, WA, United States)
Date Acquired
August 12, 2013
Publication Date
October 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 285
ISSN: 0004-637X
Subject Category
Astronomy
Report/Patent Number
ISSN: 0004-637X
Accession Number
85A16971
Funding Number(s)
CONTRACT_GRANT: NAG5-45
CONTRACT_GRANT: NAS5-26409
CONTRACT_GRANT: NSF AST-80-21074
Distribution Limits
Public
Copyright
Other

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