On the Scaling and Spacing of Extra-Solar Multi-Planet Systems
| Autor: | Yeh, Li-Chin, Jiang, Ing-Guey, Gajendran, Sridhar |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Astrophysics and Space Science 365, 186 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/s10509-020-03899-y |
| Popis: | We investigate whether certain extra-solar multi-planet systems simultaneously follow the scaling and spacing rules of the angular-momentum-deficit model. The masses and semi-major axes of exoplanets in ten multi-planet systems are considered. It is found that GJ 667C, HD 215152, HD 40307, and Kepler-79 systems are currently close to configurations of the angular-momentum-deficit model. In a gas-poor scenario, GJ 3293, HD 141399, and HD 34445 systems are those which had a configuration of the angular-momentum-deficit model in the past and get scattered away due to post gaseous effects. In addition, no matter in gas-free or gas-poor scenario, 55 Cnc, GJ 876, and WASP-47 systems do not follow the angular-momentum-deficit model. Therefore, our results reveal important formation histories of these multi-planet systems. Comment: 22 pages, 6 figures, published in Astrophysics and Space Science |
| Databáze: | arXiv |
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