| Abstract : | Photometric variability studies of very low-mass stars (VLMs) and Brown Dwarfs (BDs) are
important tools to probe the physical nature of their atmospheres. Photometric variability in these dwarfs is due to the presence of surface features like magnetic spots (strong magnetic fields) or dust clouds, which cause optical modulation as it rotates, and it is possible to measure the period of rotation of an object from its light curve. The time-series photometric variability is a key probe of atmospheric inhomogeneities in VLMs and BDs. Here, we present TESS high-quality light curves of young ( ∼ 3 Myr) VLMs and BDs in the Taurus molecular cloud. Our aim is to search the fast rotation of low-mass stars and picturized the dynamic atmosphere and surface features. Out of 11 of the highest-confidence Taurus members, we find that 72% are periodic in nature among them 3 BDs have a period < 1.5 d. Interestingly, we have detected 4 flare events in 3 young BDs. From the flared light curves, we have estimated the total bolometric flared energy in a range of 10^36 to 10^37 ergs, which is close to the superflare energy range. Such superflares strong effect on the habitability of planets around M-dwarfs. |
