期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 724, 期 1, 页码 L53-L58出版社
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/724/1/L53
关键词
planetary systems; planets and satellites: formation; planets and satellites: individual (CoRoT-7); planet-star interactions
资金
- National Science Foundation [AST-0908807]
- NASA [NNX07A-L13G, NNX07AI88G, NNX08AL41G, NNX08AM84G]
- JSPS
- Direct For Mathematical & Physical Scien [0908807] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [0908807] Funding Source: National Science Foundation
- NASA [98522, NNX08AM84G] Funding Source: Federal RePORTER
We simulate a Kepler-like observation of a theoretical exoplanet population and show that the observed orbital period distribution of the Kepler giant planet candidates is best matched by an average stellar specific dissipation function Q'(*) in the interval 10(6) less than or similar to Q'(*) less than or similar to 10(7). In that situation, the few super-Earths that are driven to orbital periods of P < 1 day by dynamical interactions in multiple-planet systems will survive tidal disruption for a significant fraction of the main-sequence lifetimes of their stellar hosts. Consequently, though these very hot super-Earths are not characteristic of the overall super-Earth population, their substantial transit probability implies that they should be significant contributors to the full super-Earth population uncovered by Kepler. As a result, the CoRoT-7 system may be the first representative of a population of very hot super-Earths that we suggest should be found in multiple-planet systems preferentially orbiting the least-dissipative stellar hosts in the Kepler sample.
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