Observational consequences of the recently proposed Super-Earth orbiting GJ 436
Observational consequences of the recently proposed Super-Earth orbiting GJ 436
复制标题
最近提出的超级地球轨道 GJ 436 的观测结果
DOI:
10.1051/0004-6361:200810278
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发表时间:
2008
影响因子:
6.5
通讯作者:
Seifahrt
中科院分区:
文献类型:
--
作者:
Seifahrt
Ribas and collaborators have recently proposed that an additional, ~5 planet orbits the transiting planet host star GJ 436. Long-term dynamical interactions between the two planets leading to eccentricity excitation might provide an explanation for the transiting planet's unexpectedly large orbital eccentricity. We examine whether the existence of such a second planet is supported by the available observational data when the short-term interactions that would result from its presence are accounted for. We find that the model for the system suggested by Ribas and collaborators lead to predictions that are strongly inconsistent with the measured host star radial velocities, transiting planet primary and secondary eclipse times, and transiting planet orbital inclinations. A search for an alternative two planet model that is consistent with the data yields a number of plausible solutions, although no single one stands out as particularly unique by giving a significantly better fit to the data than the nominal single planet model. We conclude that Ribas and collaborator's general hypothesis of an additional short-period planet in the GJ 436 system is still plausible, but that there is not sufficient evidence to support their claim of a planet detection.
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DOI:
10.1086/508155
发表时间:
2006-07
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Holman;J. Winn;D. Latham;F. O'Donovan;D. Charbonneau;G. Bakos;G. Esquerdo;C. Hergenrother;M. Everett;A. Pál
通讯作者:
M. Holman;J. Winn;D. Latham;F. O'Donovan;D. Charbonneau;G. Bakos;G. Esquerdo;C. Hergenrother;M. Everett;A. Pál
DOI:
10.1086/142826
发表时间:
1924-07
期刊:
The Astrophysical Journal
影响因子:
--
作者:
D. B. McLaughlin
通讯作者:
D. B. McLaughlin
DOI:
10.1051/0004-6361:20077799
发表时间:
2007-05
期刊:
Astronomy & Astrophysics
影响因子:
--
作者:
M. Gillon;F. Pont;B. Demory;F. Mallmann;M. Mayor;T. Mazeh;D. Queloz;Avi Shporer;S. Udry;C. Geneve;U. Geneve;Switzerland;Institut d'Astrophysique et de Geophysique;U. Liege;Belgium;O. F. B. -. Ofxb;S. O. Physics;Astronomy;Raymond;Beverly Sackler Faculty of Exact Sciences;T. University;T. Aviv;Israel;Laboratoire d'astrophysique;E. P. F. Lausanne;Observatoire
通讯作者:
M. Gillon;F. Pont;B. Demory;F. Mallmann;M. Mayor;T. Mazeh;D. Queloz;Avi Shporer;S. Udry;C. Geneve;U. Geneve;Switzerland;Institut d'Astrophysique et de Geophysique;U. Liege;Belgium;O. F. B. -. Ofxb;S. O. Physics;Astronomy;Raymond;Beverly Sackler Faculty of Exact Sciences;T. University;T. Aviv;Israel;Laboratoire d'astrophysique;E. P. F. Lausanne;Observatoire
DOI:
10.1086/509910
发表时间:
2006
期刊:
The Astrophysical Journal
影响因子:
--
作者:
B. Gaudi;J. Winn
通讯作者:
J. Winn
DOI:
10.1086/319847
发表时间:
2001
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
G. Laughlin;J. Chambers
通讯作者:
J. Chambers