Abstract Details
| Name: Abhay Mehta Affiliation: St. Xavier Conference ID: ASI2018_1583 Title : Exploring the mass-radius relationship for exoplanets Authors and Co-Authors : Mayank Narang, TIFR, Mumbai Manoj Puravankara, TIFR, Mumbai Abstract Type : Poster Abstract Category : Stars,ISM and the Galaxy Abstract : We investigate the mass-radius relationship for exoplanets orbiting main sequence stars in order to characterize the planetary composition and to study the planet demographics based on compositional diversity. Our sample, compiled from the NASA Exoplanet Archive, contains 403 transits planets that have both masses and radius directly measured from observations. The planet masses have been measured either by radial velocity or by using transit-time-variations. This is the largest sample of exoplanets for which mass-radius relationship analysis have been carried out so far. Our analysis shows that mass-radius relationship for exoplanets deviates from M ∠R^3. We also find evidence for small (< 4 R_Earth) and giant (> 4 R_Earth) planets occupying different density regimes. Additionally, we also searched for correlations between planetary densities and other observed planet properties (e.g. orbital period) and the host star properties (T_eff, metallicity). In this contribution, we will describe our sample and analysis and present our results. |