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VLBI observations of 23 hot spots in the starburst galaxy M82The simultaneous 2.3 and 8.4 GHz VLBI observations of 23 hot spots in the nuclear region of M82 presented indicate the presence of six hot spots at 2.3 GHz, but only one at 8.4 GHz. Attention is given to a mapping of the brightest hot spot, 41.9+58, at 2.3 GHz, which exhibits a complex brightness distribution whose angular width in the NE-SW direction is 45 mas at the 10-percent contour. These data are consistent with the hot spots in M82 being powerful SNRs, with ages between about 10 and 300 yr.
Document ID
19880036356
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/165847
Authors
Bartel, Norbert (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Ratner, Michael I. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Shapiro, Irwin I. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Rogers, Alan E. E. (Haystack Observatory Westford, MA, United States)
Preston, Robert A. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
December 15, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 323
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
88A23583
Funding Number(s)
CONTRACT_GRANT: JPL-956542
CONTRACT_GRANT: NSF AST-83-00796
CONTRACT_GRANT: NAS7-100
CONTRACT_GRANT: NSF AST-85-19763
Distribution Limits
Public
Copyright
Other

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