Abstract Details

Name: Ujjwal Krishnan
Affiliation: CHRIST (Deemed to be University), Bangalore
Conference ID: ASI2020_128
Title : Is star formation different in low and high density galaxy environments?
Authors and Co-Authors : Ujjwal Krishnan, Sreeja S Kartha
Abstract Type : Oral
Abstract Category : Extragalactic Astronomy
Abstract : Recent star formation activity gives us a better understanding of the formation and evolution of galaxies in the local Universe. Star formation properties of galaxies differ in the field to the groups/clusters depending on the re-processing mechanisms determined by the environment. As we know, the UV flux enables us to directly trace the star formation in galaxies. With the advent of ultraviolet imaging telescope (UVIT) on-board ASTROSAT, it is now possible to identify and characterise star-forming knots in the galaxy within angular scales less than 1.5”. In this study, we made use of the data from NUV and FUV channels of the UVIT and estimated the star formation properties (age, star formation rates, etc.) in galaxies to understand the role of secular and environmental effects in regulating the star formation. We estimated star formation rates in a set of field galaxies as well as galaxies in groups with ASTROSAT data. Also, we tried to explain the results with the evolution of galaxies.