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arXiv 0801.1685astro-ph
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WASP-5 b：一颗致密的、非常热的木星，正穿过一颗南半球的12等恒星。

WASP-5b: a dense, very-hot Jupiter transiting a 12th-mag Southern-hemisphere star

D. R. Anderson, M. Gillon, C. Hellier, P. F. L. Maxted, F. Pepe, D. Queloz, D. M. Wilson, A. Collier Cameron, B. Smalley, T. A. Lister, S. J. Bentley, A. Blecha… 展开作者

D. R. Anderson, M. Gillon, C. Hellier, P. F. L. Maxted, F. Pepe, D. Queloz, D. M. Wilson, A. Collier Cameron, B. Smalley, T. A. Lister, S. J. Bentley, A. Blecha, D. J. Christian, B. Enoch, L. Hebb, K. Horne, J. Irwin, Y. C. Joshi, S. R. Kane, M. Marmier, M. Mayor, N. R. Parley, D. L. Pollacco, F. Pont, R. Ryans, D. Ségransan, I. Skillen, R. A. Street, S. Udry, R. G. West, P. J. Wheatley

备注：
4 pages, 4 figures, 4 tables, submitted to MNRAS Letters. Corrected vsini value and therefore age estimate. Added reference. Corrected error bars in Fig 4. Changed some wording
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摘要：

我们报告发现了WASP-5 b，这是一颗质量为100亿的行星，在南半球绕着一颗12等G型恒星运行。1.6-d的轨道周期将WASP-5 b置于极热的类星体中，并导致预测的平衡温度为1750 K。WASP-5 b是所有已知木星质量行星的密度，比受到类似恒星日照的TrES-4密度高7倍，比轨道周期类似的WASP-4 b密度高3倍。我们介绍了WASP-5的凌日测光和径向速度测量（= USNO-B1 0487-0799749），从中我们得出了行星的质量，半径和密度：M_P = 1.58 + 0.13 - 0.08 M_J，R_P = 1.090 + 0.094 - 0.058 R_J，Rho_P = 1.22 + 0.19 - 0.24 Rho_J。凌日时刻T_C（HJD）= 2454375.62466 + 0.00026 - 0.00025。

英文摘要：

We report the discovery of WASP-5b, a Jupiter-mass planet orbiting a 12th-mag G-type star in the Southern hemisphere. The 1.6-d orbital period places WASP-5b in the class of very-hot Jupiters and leads to a predicted equilibrium temperature of 1750 K. WASP-5b is the densest of any known Jovian-mass planet, being a factor seven denser than TrES-4, which is subject to similar stellar insolation, and a factor three denser than WASP-4b, which has a similar orbital period. We present transit photometry and radial-velocity measurements of WASP-5 (= USNO-B1 0487-0799749), from which we derive the mass, radius and density of the planet: M_P = 1.58 +0.13 -0.08 M_J, R_P = 1.090 +0.094 -0.058 R_J and Rho_P = 1.22 +0.19 -0.24 Rho_J. The orbital period is P = 1.6284296 +0.0000048 -0.0000037 d and the mid-transit epoch is T_C (HJD) = 2454375.62466 +0.00026 -0.00025.

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