| Name: | Manjunath Bestha |
| Affiliation: | Indian Institute of Astrophysics |
| Conference ID : | ASI2024_445 |
| Title : | Transmission Spectroscopy of Exoplanets Using the 2m Himalayan Chandra Telescope |
| Authors : | Manjunath B, Sivarani T, Athira Unni, Akhil Jaini, Arun Surya, Shivangi Menon, Parvathy M, Devika Divakar. |
| Authors Affiliation: | Indian Institute of Astrophysics, Bengaluru, India
University of California, Irvine, United States
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia.
Indian Institutes of Science Education and Research (IISERs), Kolkata,India |
| Mode of Presentation: | 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 |
