Abstract Details
| Name: Kaustubh Vaghmare Affiliation: IUCAA, Pune Conference ID: ASI2015_502 Title : Where do S0 Galaxies Fit in the Overall Picture of Galaxy Formation and Evolution? Authors and Co-Authors : Sudhanshu Barway (South African Astronomical Observatory) Yogesh Wadadekar (National Centre for Radio Astrophysics) Ajit Kembhavi (IUCAA) Abstract Type : Oral Abstract Category : Extragalactic astronomy Abstract : Originally, S0 aka lenticular galaxies have been given a conspicuous position on the Hubble tuning fork of galaxies. This position implies that S0 galaxies are a transition class of objects between spirals and elliptical galaxies. However recent research shows that S0 galaxies comprise sub classes with dramatically different formation histories and physical properties. In the current talk I will summarize the work done by me in this field which aims at developing a better understanding of how S0 galaxies fit into the overall picture of galaxy formation and evolution. This work includes a multiwavelength study using data from major observatories including GALEX, SDSS, 2MASS and WISE which demonstrates the dependence of star formation history on luminosity and environment; and also a study carried out in mid-IR using Spitzer data where structural parameters were determined for a sample of S0 and spiral galaxies and their relation to each other has been explored. The talk, while emphasizing the results of the above work, will also aim at summarizing the general understanding of S0 galaxies and why it is important to understand their formation. |