| タイトル | The Transit Ingress and the Tilted Orbit of the Extraordinarily Eccentric Exoplanet HD 80606b |
| 著者（英） | Starkey, Donn; Adams, Elisabeth R.; Gazak, J. Zachary; Valenti, Jeff A.; Carter, Joshua A.; Welsh, William F.; Vanderbei, Robert J.; Colon, Knicole D.; Reyes, Francisco; Marcy, Geoffrey W.; Kadakia, Shimonee; Dreizler, Stefan; Lockhart, Matthew; Johnson, John A.; Odewahn, Stephen; Ford, Eric B.; Dantowitz, Ronald; Nortmann, Lisa; Howard, Andrew W.; Winn, Joshua N.; Crossfield, Ian J. |
| 著者所属（英） | Massachusetts Inst. of Tech. |
| 発行日 | 2009-10-01 |
| 言語 | eng |
| 内容記述 | We reported the first detection of the transit ingress, revealing the transit duration to be 11.64 plus or minus 0.25 hr and allowing more robust determinations of the system parameters. Keck spectra obtained at midtransit exhibited an anomalous blueshift, giving definitive evidence that the stellar spin axis and planetary orbital axis are misaligned. Thus, the orbit of this planet is not only highly eccentric but is also tilted away from the equatorial plane of its parent star. A large tilt had been predicted, based on the idea that the planet's eccentric orbit was caused by the Kozai mechanism. |
| NASA分類 | Astrophysics |
| 権利 | Copyright |
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