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X-ray observations of high-excitation emission-line galaxies with the HEAO 1 scanning modulation collimatorData from the scanning modulation collimator on HEAO 1 are presented which firmly establish high-excitation emission-line galaxies as a class of X-ray source. For NGC 5506 and M82, the X-ray emission (1-13 keV) is shown to originate in the nuclear region of the galaxy; NGC 2992 and NGC 526a are also identified as X-ray emitters, but are not resolved. The latter is a new identification for 2A 0120-353, previously associated with the NGC 526/527 group. In these four particular cases, the observed X-ray-emitting galaxies have a close companion, and the X-ray emission may have been triggered by a close encounter
Document ID
19790051624
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/182954
Authors
Griffiths, R. E. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Schwartz, D. A. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Schwarz, J. (Harvard-Smithsonian Center for Astrophysics Cambridge, Mass., United States)
Doxsey, R. E. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Johnston, M. D. (MIT Cambridge, Mass., United States)
Blades, J. C. (Anglo-Australian Observatory Epping, New South Wales, Australia)
Date Acquired
August 9, 2013
Publication Date
May 15, 1979
Publication Information
Publication: Astrophysical Journal
Subject Category
Astronomy
Accession Number
79A35637
Funding Number(s)
CONTRACT_GRANT: NAS8-30543
CONTRACT_GRANT: NAS8-27972
Distribution Limits
Public
Copyright
Other

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