Radio continuum and far-infrared emission from the galaxies in the Eridanus group |
| |
| Authors: | A Omar K S Dwarakanath |
| |
| Institution: | (1) Raman Research Institute, Sadashivanagar, 560 080 Bangalore, India;(2) Present address: ARIES, Manora peak, Nainital, 263 129, Uttaranchal, India |
| |
| 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 (L
20cm > 1023 W Hz−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 (L
20cm ∼ 1022 W Hz−1) is consistent with that of the field galaxies, other groups, and late-type galaxies in nearby clusters. |
| |
| Keywords: | Galaxy: radio continuum radio FIR correlation galaxies: groups individual: Eridanus |
| 本文献已被 SpringerLink 等数据库收录！ |
|
