Abstract Details
| Name: Veeresh Singh Affiliation: Astrophysics and Cosmology Research Unit, UKZN,SA Conference ID: ASI2015_622 Title : Rare examples of radio galaxies hosted in spiral-like hosts Authors and Co-Authors : Ishwara-Chandra C.H. (National Centre for Radio Astrophysics, TIFR, Pune), Yogesh Wadadekar (National Centre for Radio Astrophysics, TIFR, Pune), Jonathan Sievers (Astrophysics and Cosmology Research Unit, UKZN, South Africa), Alexandre Beelen (Institute d'Astrophysique Spatiale, Orsay, France) Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : Radio galaxies in the local universe are found to be exclusively hosted in massive elliptical galaxies characterized by relatively rarer Inter-Stellar Medium (ISM) and feeble star formation. This property of radio galaxies is reconciled by considering feedback processes involving the interaction of large and fast jets with the ISM. We report the discovery of three extremely rare examples of radio galaxies with spiral-like hosts using optical data from the SDSS survey in combination with FIRST and NVSS radio surveys. The host galaxies of these sources appear to have morphology, star formation efficiency and dust content similar to normal star forming disk galaxies. Our analysis on the formation of these systems favors the plausible scenario of a merger or a strongly interacting system residing in an over-dense region. |