Abstract Details
| Name: DEVIKA DIVAKAR Affiliation: IIA, Bengaluru Conference ID: ASI2019_57 Title : Study of Horizontal Branch stars in the faint Milky Way satellite galaxies Authors and Co-Authors : Devika K Divakar, Sivarani Thirupathi, Vijayakumar H Doddamani Abstract Type : Oral Abstract Category : Stars, ISM and Galaxy Abstract : Horizontal branch(HB) stars belong to old and metal poor stellar population. They are one of the most luminous old population that can be probed to large distances. HB populations are found in Globular clusters, Halo and in many MW satellites. HB population displays a variety in their morphology in a color magnitude diagram. It is found to be sensitive to metallicities, age and helium abundances. Hence, they can be used to study the details of star formation history and environment of star formation. Similarly, RR Lyrae stars, which are a subset of HB stars, show different Oosterhoff types among various stellar systems. Here, we present complete census of HB stars among faint MW galaxies based on GAIA, GALEX and other optical surveys. We also present results from deep UVIT (onboard ASTROSAT, an Indian space mission) imaging for Reticulum-II satellite. |