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  • 标题:WASP-113b and WASP-114b, two inflated hot Jupiters with contrasting densities
  • 本地全文:下载
  • 作者:S. C. C. Barros ; S. C. C. Barros ; D. J. A. Brown
  • 期刊名称:Astronomy & Astrophysics
  • 印刷版ISSN:0004-6361
  • 电子版ISSN:1432-0746
  • 出版年度:2016
  • 卷号:593
  • 页码:1-9
  • DOI:10.1051/0004-6361/201526517
  • 语种:English
  • 出版社:EDP Sciences
  • 摘要:Aims. We present the discovery and characterisation of the exoplanets WASP-113b and WASP-114b by the WASP surveys, SOPHIE and CORALIE. Methods. The planetary nature of the systems was established by performing follow-up photometric and spectroscopic observations. The follow-up data were combined with the WASP-photometry and analysed with an MCMC code to obtain system parameters. Results. The host stars WASP-113 and WASP-114 are very similar. They are both early G-type stars with an effective temperature of ~5900 K, [Fe/H] ~ 0.12, and log g~ 4.1 dex. However, WASP-113 is older than WASP-114. Although the planetary companions have similar radii, WASP-114b is almost four times heavier than WASP-113b. WASP-113b has a mass of 0.48 MJup and an orbital period of ~4.5 days; WASP-114b has a mass of 1.77 MJup and an orbital period of ~1.5 days. Both planets have inflated radii, in particular WASP-113 with a radius anomaly of ℜ = 0.35. The high scale height of WASP-113b (~950 km) makes it a good target for follow-up atmospheric observations.
  • 关键词:planets and satellites: detection;stars: individual: WASP-113;stars: individual: WASP-114;techniques: radial velocities;techniques: photometric
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