WASP-4b：南半球一颗12星等的凌日热木星
天体物理学
2009-11-13 v2
摘要
我们报告了WASP-4b的发现，这是一颗具有1.34天轨道周期的大型凌日气态巨行星。这是SuperWASP-South观测台和CORALIE合作组发现的第一颗行星，也是南半球发现的第一颗轨道恒星亮于16星等的行星。通过对高质量光变曲线和精确径向速度测量的同时拟合，得到行星质量为1.22±0.1 MJup，行星半径为1.42±0.08 RJup。宿主恒星为USNO-B1.0 0479-0948995，是一颗视星等12.5的G7V恒星。由于轨道周期较短，该行星的预测表面温度为1776 K，使其成为在红外波段探测二次食的理想候选体。
引用
@article{arxiv.0801.1509,
title = {WASP-4b: a 12th-magnitude transiting hot-Jupiter in the Southern hemisphere},
author = {D. M. Wilson and M. Gillon and C. Hellier and P. F. L. Maxted and F. Pepe and D. Queloz and D. R. Anderson and A. Collier Cameron and B. Smalley and T. A. Lister and S. J. Bentley and A. Blecha and D. J. Christian and B. Enoch and C. A. Haswell and L. Hebb and K. Horne and J. Irwin and Y. C. Joshi and S. R. Kane and M. Marmier and M. Mayor and N. Parley and D. Pollacco and F. Pont and R. Ryans and D. Segransan and I. Skillen and R. A. Street and S. Udry and R. G. West and P. J. Wheatley},
journal= {arXiv preprint arXiv:0801.1509},
year = {2009}
}
备注
Added 3 new RV measurements and resultant fit parameters updated. Minor revisions to text. 7 pages incl. 4 figures. Accepted for publication in ApJL