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Title: Radio continuum and far-infrared emission from the galaxies in the Eridanus group
Authors: Omar, A.
Dwarakanath, K.S.
Keywords: Galaxy: radio continuum
radio–FIR correlation—galaxies
Groups—individual: Eridanus
Issue Date: 2005
Publisher: Indian Academy of Sciences, Bangalore, India.
Citation: Journal of Astrophysics and Astronomy, 2005, Vol. 26, p89-102.
Abstract: The Eridanus galaxies follow the well-known radio-FIR correlation. The majority (70%) of these galaxies have their star formation rates below that of the Milky Way. The galaxies that have a significant excess of radio emission are identified as low luminosity AGNs based on their radio morphologies obtained from the GMRT observations. There are no powerful AGNs (L20 cm>1023WHz-1) in the group. The two most far-infrared and radio luminous galaxies in the group have optical and HI morphologies suggestive of recent tidal interactions. The Eridanus group also has two far-infrared luminous but radio-deficient galaxies. It is believed that these galaxies are observed within a few Myr of the onset of an intense star formation episode after being quiescent for at least a 100 Myr. The upper end of the radio luminosity distribution of the Eridanus galaxies (L20 cm 1022WHz-1) is consistent with that of the field galaxies, other groups, and late-type galaxies in nearby clusters.
ISSN: 0250-6335
Copyright: Indian Academy of Sciences, Bangalore, India.
Appears in Collections:Research Papers (A&A)

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