Fernandes, Rachel B.; Mulders, Gijs D.; Pascucci, Ilaria; Mordasini, Christoph; Emsenhuber, Alexandre (2019). Hints for a Turnover at the Snow Line in the Giant Planet Occurrence Rate. Astrophysical journal, 874(1), p. 81. Institute of Physics Publishing IOP 10.3847/1538-4357/ab0300
|
Text
Fernandes_2019_ApJ_874_81.pdf - Published Version Available under License Publisher holds Copyright. Download (1MB) | Preview |
The orbital distribution of giant planets is crucial for understanding how terrestrial planets form and predicting yields of exoplanet surveys. Here, we derive giant planets occurrence rates as a function of orbital period by taking into account the detection efficiency of the Kepler and radial velocity (RV) surveys. The giant planet occurrence rates for Kepler and RV show the same rising trend with increasing distance from the star. We identify a break in the RV giant planet distribution between ~2-3 au -- close to the location of the snow line in the Solar System -- after which the occurrence rate decreases with distance from the star. Extrapolating a broken power-law distribution to larger semi-major axes, we find good agreement with the ~ 1% planet occurrence rates from direct imaging surveys. Assuming a symmetric power law, we also estimate that the occurrence of giant planets between 0.1-100 au is 26.6 +7.5 -5.4% for planets with masses 0.1-20MJ and decreases to 6.2 +1.5 -1.2% for planets more massive than Jupiter. This implies that only a fraction of the structures detected in disks around young stars can be attributed to giant planets. Various planet population synthesis models show good agreement with the observed distribution, and we show how a quantitative comparison between model and data can be used to constrain planet formation and migration mechanisms.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences > Theoretical Astrophysics and Planetary Science (TAPS) 08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute 08 Faculty of Science > Physics Institute > NCCR PlanetS |
UniBE Contributor: |
Mordasini, Christoph, Emsenhuber, Alexandre |
Subjects: |
500 Science 500 Science > 520 Astronomy 500 Science > 530 Physics 600 Technology > 620 Engineering |
ISSN: |
0004-637X |
Publisher: |
Institute of Physics Publishing IOP |
Language: |
English |
Submitter: |
Janine Jungo |
Date Deposited: |
21 Apr 2020 14:06 |
Last Modified: |
05 Dec 2022 15:38 |
Publisher DOI: |
10.3847/1538-4357/ab0300 |
BORIS DOI: |
10.7892/boris.143000 |
URI: |
https://boris.unibe.ch/id/eprint/143000 |
Actions (login required)
 |
Edit item |