Abstract Details
| Name: Manjunath Bestha Affiliation: Indian Institute of Astrophysics Conference ID: ASI2024_445 Title : Transmission Spectroscopy of Exoplanets Using the 2m Himalayan Chandra Telescope Authors and Co-Authors : Manjunath B, Sivarani T, Athira Unni, Akhil Jaini, Arun Surya, Shivangi Menon, Parvathy M, Devika Divakar. Abstract Type : Oral Abstract Category : Sun, Solar System, Exoplanets, and Astrobiology Abstract : Transmission spectroscopy has been successfully used to study exoplanet atmospheres. Most of these observations are made using space-based instruments such as HST, Spitzer, and JWST. Low-resolution transmission spectroscopy, even with large 8m ground-based telescopes, often does not yield conclusive results due to systematic errors. Recently, Athira et al. demonstrated that a 2m HCT could be used for transmission spectroscopy of hot Jupiters using low-resolution spectroscopy. In this study, we attempt to use the slitless mode of HCT-HFOSC to understand various systematic errors that would limit us from reaching the photon noise limit. We also present high-resolution transmission spectroscopy with the Hanle Echelle spectrograph which allows individual spectral lines to be studied. Sodium D-lines are detected in many of the hot Jupiters and cover a very large scale height of the planet’s atmosphere, helping to constrain the atmospheric structure |