WASP-38b: a transiting exoplanet in an eccentric, 6.87d period orbit
WASP-38b: a transiting exoplanet in an eccentric, 6.87d period orbit
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WASP-38b:一颗在偏心 6.87d 周期轨道上凌日的系外行星
DOI:
10.1051/0004-6361/201015800
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发表时间:
2010
影响因子:
6.5
通讯作者:
Barros S
中科院分区:
文献类型:
--
作者:
Barros S
AimsWe report the discovery of WASP-38b, a long period transiting planet in an eccentric 6.871815 day orbit. The transit epoch is 2 455 335.92050 ± 0.00074 (HJD) and the transit duration is 4.663 h.MethodsWASP-38b’s discovery was enabled due to an upgrade to the SuperWASP-North cameras. We performed a spectral analysis of the host star HD 146389/BD+10 2980 that yieldedTeff= 6150 ± 80 K, logg= 4.3 ± 0.1,vsini= 8.6 ± 0.4 km s-1,M∗= 1.16 ± 0.04M⊙andR∗= 1.33 ± 0.03R⊙, consistent with a dwarf of spectral type F8. Assuming a main-sequence mass-radius relation for the star, we fitted simultaneously the radial velocity variations and the transit light curves to estimate the orbital and planetary parameters.ResultsThe planet has a mass of 2.69 ± 0.06MJupand a radius of 1.09 ± 0.03RJupgiving a density,ρp= 2.1 ± 0.1ρJ. The high precision of the eccentricitye= 0.0314 ± 0.0044 is due to the relative transit timing from the light curves and the RV shape. The planet equilibrium temperature is estimated at 1292 ± 33 K. WASP-38b is the longest period planet found by SuperWASP-North and with a bright host star (V= 9.4 mag), is a good candidate for followup atmospheric studies.
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DOI:
10.1086/427082
发表时间:
2004-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Meibom;R. Mathieu
通讯作者:
S. Meibom;R. Mathieu
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
F. Pepe;M. Mayor;F. Galland;D. Naef;D. Queloz;N. Santos;S. Udry;M. Burnet
通讯作者:
M. Burnet
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
M. Barbieri;R. Alonso;G. Laughlin;J. Almenara;R. Bissinger;Derek Davies;D. Gasparri;E. Guido;C. Lopresti;F. Manzini;G. Sostero
通讯作者:
G. Sostero
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
F. Bouchy;G. Hébrard;S. Udry;X. Delfosse;I. Boisse;M. Desort;X. Bonfils;A. Eggenberger;D. Ehrenreich;T. Forveille;A. Lagrange;H. Coroller;C. Lovis;C. Moutou;F. Pepe;C. Perrier;F. Pont;D. Queloz;N. Santos;D. Ségransan;A. Vidal
通讯作者:
A. Vidal
影响因子:
6.5
作者:
Gibson N
通讯作者:
Gibson N