Abstract Details

Name: Kshama Sara Kurian
Affiliation: Indian Institute of Astrophysics
Conference ID: ASI2017_1367
Title : AGN and star-burst activity in Seyfert galaxies
Authors and Co-Authors : C. S. Stalin, Indian Institute of Astrophysics
Abstract Type : Poster
Abstract Category : Extragalactic astronomy
Abstract : Active galactic nuclei (AGN) and star-burst activity are found to co-exist in many galaxies. A variety of observations show a correlation between these two phenomena which points to a physical connection between them. It is now believed that star formation can occur in the central regions of AGN, however, it is not clear how these two phenomena are related. Imaging observations of few Seyfert 2 galaxies have shown that the UV continuum emission in them is not only dominated by the central ionizing nuclear source, but also comes from star forming areas in their circum-nuclear regions. We aim to extrapolate these findings based on limited sources (e.g. NGC 7314) using observations from UVIT as well as other X-ray payloads onboard ASTROSAT with the motivation to identify the circum-nuclear star forming regions and to study their physical nature using spectral energy distribution (SED) modeling. The mass and star formation rate will be estimated to characterize the galaxy evolution. In addition to ASTROSAT observations, data from other space missions such as Chandra (X-rays) and IR Spitzer (IR) are being used in this work. Details of this study will be presented.