Abstract Details
| Name: Lalitha Sairam Affiliation: Indian Institute of Astrophysics Conference ID: ASI2017_925 Title : High-energy environment of exoplanets around low-mass stars Authors and Co-Authors : Spandan Dash Indian Institute of Astrophysics Carolina von Essen Department of Physics and Astronomy - Stellar Astrophysics Centre, Aarhus university Abstract Type : Poster Abstract Category : Stars,ISM and the Galaxy Abstract : Over the last 20 years, the field of exoplanetary science has rapidly evolved. Characterisation of exoplanetary atmospheres and their evolution has become a focus of this field. The observations carried out in optical and infra-red wavelengths primarily probe the lower atmospheres of the exoplanets while the observations in the X-ray and UV wavelengths reveal the uppermost layers of the planetary environment that interact with the stellar wind. The high-energy irradiation from host stars on their nearby planets can cause heating of the planetary atmosphere which can induce mass loss. Recent studies have shown that high-energy emission can have a crucial influence on the evolution of planets. I will discuss my recent findings concerning the exoplanets and the stellar environment by characterising the high-energy radiation field of close-in orbiting planet-bearing stars. I will give an outlook of how our emerging insights into the magnetic activity of the planet-hosting star, and exoplanet atmospheres will lead to a comprehensive understanding of exoplanet systems. |