Abstract Details
| Name: Varghese Reji Affiliation: Tata Institute of Fundamental Research, Mumbai Conference ID: ASI2024_679 Title : Pushing Efficiency of Planet Formation: Detection and Characterization of a Saturn around an M dwarf star. Authors and Co-Authors : Varghese Reji, Shubham Kanodia, Joe Ninan, Jessica E. Libby-Roberts, Caleb I. Cañas, Suvrath Mahadevan Abstract Type : Poster Abstract Category : Sun, Solar System, Exoplanets, and Astrobiology Abstract : According to our current understanding of planet formation, since the protoplanetary disc mass around proto-M-dwarf stars is small, it is difficult to form giant planets around M-dwarf stars. The discovery and detection of these extreme planets provide the tightest constraints to the efficiency of planet formation models. Under the umbrella of GEMS (Giant Exoplanets around M dwarf stars) collaboration, we identify potential giant planet candidates from the TESS (Transiting Exoplanet Survey Satellite) dataset and conduct ground-based photometry follow-ups with RBO, APO, etc. and extreme precision radial velocity measurements using the Habitable Zone Planet Finder (HPF), NEID and Planet Finding Spectrograph(PFS)s. This program has already significantly increased the number of GEMS available in the literature, providing insights into the mass budget of protoplanetary discs to form giant planets around M dwarf stars and formation pathways of GEMS in protostellar phase. In this poster, we will specifically focus on one of our latest GEMS discoveries of a Saturn around an M-dwarf star. I will present our simultaneous Bayesian modelling of large photometry data (both TESS and ground-based follow-ups) along with HPF radial velocity measurements. |