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A multiwavelength study of the galaxy UGC 11000The properties of the galaxy UGC 11,000 were investigated using broad-band and narrow-band CCD images, K-band photometry, long-slit optical spectroscopy, and 21-cm radio observations. Results show that the UGC 11,000 can be classified as belonging to the SB(s)dm IV galaxy type. Its heliocentric velocity was found to be equal to (1398 + or - 15) km/sec, which is about a factor of 4 larger than that assumed previously. Three dominant stellar populations were distinguished in UGC 11,000: (1) a bulge with colors corresponding to early-F main sequence stars; (2) a young disk populaton with median colors of late-A type, associated with the spiral-arm pattern and numerous giant H II regions; and (3) an older population of G to K stars corresponding to the outermost regions of the galaxy. The giant H II regions exhibit high star-forming activity and high oxygen abundance. The bulge and the outer disk are free of ionized gas and contain red stars.
Document ID
19910035113
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Schulte-Ladbeck, R. E.
(Wisconsin, University Madison, United States)
Hopp, U.
(Max-Planck-Institut fuer Astronomie Heidelberg, Federal Republic of Germany, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Astronomy and Astrophysics
Volume: 239
Issue: 2-Jan
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
91A19736
Funding Number(s)
CONTRACT_GRANT: DFG-SHU-644/1-1
CONTRACT_GRANT: NAS5-26777
Distribution Limits
Public
Copyright
Other

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