Abstract Details
| Name: Samrat Ghosh Affiliation: S N Bose National Centre for Basic Sciences, JD Block, Salt Lake, Kolkata - 700106 Conference ID: ASI2018_1356 Title : A Search for Photometric Variability of Very Low Mass stars and Brown Dwarfs Authors and Co-Authors : Soumen Mondal, Department of Astrophysics & Cosmology, S. N. Bose National Centre for Basic Sciences, JD Block, Sector 3, Salt Lake, Kolkata 700106 Abstract Type : Poster Abstract Category : Stars,ISM and the Galaxy Abstract : Photometric variability studies of very-low-mass stars (VLMs) and brown dwarfs (BDs) is a valuable tool to probe the physical nature of their atmospheres and rotational properties. This variability in these dwarfs is generally attributed to the presence of surface features like magnetic spots or dust clouds, which may cause optical modulation as the object rotates, and it's possible to measure the period of rotation of a dwarf. Our main aim is to understand those rotational properties and thus atmospheric dynamics of VLMs and BDs in the young star-forming regions as well as in the galactic field. We will present here our results of optical I-band photometric monitoring of few young BDs and VLMs in IC348, a star-forming region in Perseus Molecular Cloud having an age of few million years, and also few old field BDs having the age of few Gyrs. |