Stellar populaton studies: Insights from UVIT
by Annapurni Subramaniam, Indian Institute of Astrophysics, Bangalore
April 12, 2019 04:00 pm Physics Auditorium
Abstract: Young and old star clusters are copious emitters in the UV. Old stellar populations are dominated by low mass systems and the end stages of single and binary stars. Several exotic stellar populations found in old star clusters, such as Blue Straggler stars, Blue and extreme horizontal branch stars, Cataclysmic variables and white dwarfs are found to dominate the UV flux in globular clusters and old open clusters. Young star forming regions dominated by the massive OBA type stars that have significant UV flux are ideal to trace recent star formation up to a few hundred Myr in the nearby galaxies. In this talk, I present the results from our studies of old open star clusters, globular clusters and nearby galaxies observed using UVIT. I shall also discuss the insights gained from the superior resolution and the efficient use of UVIT filters that help to understand the properties of detected population.
Title : Exploring the universe at highest energies
by Lab Saha, Univ. Complutense de Madrid, Spain
April 24, 2019 02:30 pm Physics Auditorium
Abstract : High-energy photons from space are created in the most violent processes in the universe and are unique and powerful probes for astrophysics and for fundamental physics in extreme conditions. With the efforts of dedicated ...
24/04/2019 04:00 pm Lab Saha, Univ. Complutense de Madrid (Seminar)
15/05/2019 04:00 pm Vijay Varma, Caltech (Seminar)
07/08/2019 04:00 pm Harshitha Bhat, St. Joseph's College (Seminar)