Photometric characterization of ultra-cool dwarfs: Understanding the planetary environments

ROMINA PETRUCCI; YILEN GÓMEZ MAQUEO CHEW; BRICE OLIVIER DEMORY; LAURENCE SABIN; SAINT-EX SCIENCE TEAM

Conferencia; Exoplanets III; 2020

Ultra-cool dwarfs (UCDs) are objects with effective temperatures below 3000 K that include fully-convective, very-low mass stars and brown dwarfs. According to the core-accretion theory, these objects are ideal candidates for hosting terrestrial planets. Hence, it is crucial to describe and quantify their intrinsic activity to explore and characterize the environments to which potential planets would be exposed. With this idea in mind, in this contribution, we present preliminary results of a search for flares, rotation periods and transiting planets in a sample of UCDs observed in 2-minutes cadence with the space mission TESS.