The Mass - Radius Relation of Giant Gas Planets

Çelik Orhan Z., Kayhan C., Yildiz M.

41st COSPAR Scientific Assembly, İstanbul, Turkey, 30 July 2016

  • Publication Type: Conference Paper / Unpublished
  • City: İstanbul
  • Country: Turkey
  • Erciyes University Affiliated: No

Abstract


Thanks to CoRoT and Kepler space telescope, the thousand of exoplanets have been discovered. The only observational construct on planetary interior is planetary radius. Mass-radius relation is widely studied in the literature. Many mechanisms have been suggested in the literature to explain the inflated radii of these planets. In this study, our aim is to consider planet and host star interaction and assess the basic mechanisms responsible for excess in radius of transiting giant gas planets. We show that there is much more definite relation between radius and energy per gram per second (log (l- )). There is a good linear relation between planetary radius and log (l- ) for log (l- /l0 ) < 3.75. The relation changes if log (l- /l0 ) > 3.5. There is a relatively clump for the range log (l- /l0 ) > 3.75. The reason for the change in the relation may be related with the structure of the heated part of the planets. We focus on these inflated planet.