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He I 10830 emission in Seyfert galaxies and QSOsHe I line fluxes at 10830 A are reported for eight type-1 Seyfert galaxies, three QSOs and two type-2 Seyfert galaxies. The data are combined with He I line fluxes at 5876 A in order to obtain the ratio 10830/5876. The He I flux values resulting from this ratio are compared to fiducial values measured in gaseous nebulae. It is found that the values for gaseous nebulae are very similar to values observed in type-2 Seyfert galaxies, but are considerably larger than He I line flux values for type-1 Seyfert galaxies and QSOs. The data indicate the presence of high dust reddening and powerful optical depth effects in the type-2 Seyfert galaxies.
Document ID
19850028601
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/162380
Authors
Levan, P. D. (USAF, Geophysics Laboratory, Bedford, MA; California, University La Jolla, CA, United States)
Puetter, R. C. (Air Force Geophysics Lab. Hanscom AFB, MA, United States)
Smith, H. E. (California, University La Jolla, CA, United States)
Rudy, R. J. (Steward Observatory Tucson, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 284
ISSN: 0004-637X
Subject Category
Astrophysics
Report/Patent Number
AD-A147134
AFGL-TR-84-0273
Accession Number
85A10752
Funding Number(s)
CONTRACT_GRANT: NAGW-30
CONTRACT_GRANT: NSF AST-79-22032
Distribution Limits
Public
Copyright
Other

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