Abstract Details
| Name: Samrat Ghosh Affiliation: S N Bose National Centre for Basic Sciences, JD Block, Salt Lake, Kolkata - 700106 Conference ID: ASI2017_1356 Title : A Search for Photometric Variability in Young/old Brown Dwarfs Authors and Co-Authors : Dr. Soumen Mondal, S N Bose National Centre for Basic Sciences, JD Block, Salt Lake, Kolkata 700106 Abstract Type : Poster Abstract Category : Stars,ISM and the Galaxy Abstract : Photometric variability studies of very low-mass (VLM) stars and brown dwarfs (BDs) are an important tool to probe the physical nature of their atmospheres. Photometric 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 possible to measure the period of rotation of a dwarf. Brown dwarfs being rapid rotators having period of few hours, and the variability is observed within few nights of photometric monitoring using moderate-sized telescopes. We present here our preliminary results of optical I-band photometric variability of few selected young VLM stars and BDs in IC 348 having age of few million years and also few old field brown dwarfs having age of few Gyrs. IC 348 is a nearby (∼310 pc) star forming region in Perseus Molecular Cloud. |