A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b
A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b
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系外行星动力学历史的窗口:Rossiter-McLaughlin 对 WASP-13b 和 WASP-32b 的观测
DOI:
10.1093/mnras/stu520
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发表时间:
2014
影响因子:
4.8
通讯作者:
Brothwell R
中科院分区:
文献类型:
--
作者:
Brothwell R
We present Rossiter–McLaughlin observations of WASP-13b and WASP-32b and determine the sky-projected angle between the normal of the planetary orbit and the stellar rotation axis (λ). WASP-13b and WASP-32b both have prograde orbits and are consistent with alignment with measured sky-projected angles ofand, respectively. Both WASP-13 and WASP-32 haveTeff< 6250 K, and therefore, these systems support the general trend that aligned planetary systems are preferentially found orbiting cool host stars. A Lomb–Scargle periodogram analysis was carried out on archival SuperWASP data for both systems. A statistically significant stellar rotation period detection (above 99.9 per cent confidence) was identified for the WASP-32 system withProt= 11.6 ± 1.0 days. This rotation period is in agreement with the predicted stellar rotation period calculated from the stellar radius,R*, andvsiniif a stellar inclination ofi*= 90° is assumed. With the determined rotation period, the true 3D angle between the stellar rotation axis and the planetary orbit, ψ, was found to be ψ = 11° ± 14°. We conclude with a discussion on the alignment of systems around cool host stars withTeff< 6150 K by calculating the tidal dissipation time-scale. We find that systems with short tidal dissipation time-scales are preferentially aligned and systems with long tidal dissipation time-scales have a broad range of obliquities.
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影响因子:
4.8
作者:
Grant M. Kennedy;M. Wyatt;G. Bryden;R. Wittenmyer;B. Sibthorpe
通讯作者:
B. Sibthorpe
DOI:
10.1117/12.787379
发表时间:
2008
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
S. Perruchot;D. Kohler;F. Bouchy;Y. Richaud;Pierre Richaud;G. Moreaux;M. Merzougui;R. Sottile;L. Hill;G. Knispel;X. Régal;J. Meunier;S. Ilovaisky;H. Coroller;D. Gillet;J. Schmitt;F. Pepe;M. Fleury;D. Sosnowska;P. Vors;D. Megevand;P. Blanc;C. carol;A. Point;A. Laloge;J. Brunel
通讯作者:
J. Brunel
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
G. Hébrard;D. Ehrenreich;F. Bouchy;X. Delfosse;C. Moutou;L. Arnold;I. Boisse;X. Bonfils;R. Díaz;A. Eggenberger;T. Forveille;A. Lagrange;C. Lovis;F. Pepe;C. Perrier;D. Queloz;A. Santerne;N. Santos;D. Ségransan;S. Udry;A. Vidal
通讯作者:
A. Vidal
影响因子:
4.8
作者:
J. Greaves;Grant M. Kennedy;N. Thureau;C. Eiroa;J. Marshall;J. Maldonado;B. Matthews;G. Olofsson;M. Barlow;A. Moro;B. Sibthorpe;O. Absil;D. Ardila;M. Booth;H. Broekhoven;Dja Brown;A. Cameron;C. D. Burgo;J. Francesco;J. Eislöffel;G. Duchêne;S. Ertel;W. Holland;J. Horner;P. Kalas;J. Kavelaars;J. Lestrade;L. Vican;D. Wilner;S. Wolf;M. Wyatt
通讯作者:
M. Wyatt
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
D. Bayliss;J. Winn;R. Mardling;P. Sackett
通讯作者:
P. Sackett