Young transiting planets

• Applicants: Professor Dr. Ralph Neuhäuser; Professor Dr. Ronald Redmer
• Subject Area: Mineralogy, Petrology and Geochemistry
• Term: from 2010 to 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 146270038

• Final Report Year: 2016

Final Report Abstract

We have predicted the interior of young irradiated extrasolar planets based on three-layer models developed for giant planets in the Solar System. In particular, various opacity models have been tested. Analytical models can easily be implemented but are strongly dependent on the choice of parameters so that more refined approaches have been studied. These results represent the starting point for future work on the interior structure and evolution of (young) giant exoplanets. Furthermore, we searched for young transiting planet candidates in the open cluster IC 348. The photometry of these observations required software development and data reduction. Observation of the short-time variability of the T-Tauri star CVSO30 in the open young cluster 25 Ori has indicated the existence of a transiting planet. This observation needs to be confirmed. Meanwhile, a hot Jupiter (0.77 ± 0.15 MJ ) with an orbital distance of 0.057 ± 0.001 AU and a period of 4.93 ± 0.05 days has been detected by radial velocity measurements around the 2-million-years-old solar-mass T-Tauri star V830 Tau within the MaTYSSE Large Program. A detailed analysis of Kepler-data for sun-like stars was performed in order to search for superflares, and a new power law for their rate was derived.

Publications

• Constraining the interior of extrasolar giant planets with the tidal Love number k2 using the example of HAT-P-13b, Astronomy & Astrophysics 538, A146 (2012)
  Kramm U., Nettelmann N., Fortney J.J., Neuhäuser R., Redmer R.