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arXiv 0902.2651astro-ph.EP
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低密度凌日系外行星WASP-15 b

The low density transiting exoplanet WASP-15b

R. G. West, D. R. Anderson, M. Gillon, L. Hebb, C. Hellier, P. F. L. Maxted, D. Queloz, B. Smalley, A. H. M. J. Triaud, D. M. Wilson, S. J. Bentley, A. Collier … 展开作者

R. G. West, D. R. Anderson, M. Gillon, L. Hebb, C. Hellier, P. F. L. Maxted, D. Queloz, B. Smalley, A. H. M. J. Triaud, D. M. Wilson, S. J. Bentley, A. Collier Cameron, B. Enoch, K. Horne, J. Irwin, T. A. Lister, M. Mayor, N. Parley, F. Pepe, D. Pollacco, D. Segransan, S. Udry, P. J. Wheatley

摘要:

我们报告发现了一颗低密度的系外行星,它在南半球经过一颗11等的恒星。WASP-15 b的公转周期为P=3.7520656+-0.0000028 d,质量M_p=0.542+-0.050 M_J,半径R_p=1.428+-0.077 R_J,因此是迄今发现的密度最小的凌日系外行星之一(rho_p=0.247+-0.035 g cm^-3)。对主星光谱的分析表明,它属于F5附近的光谱型,有效温度T_eff=6300 ± 100 K,[Fe/H]=-0.17 ± 0.11。

英文摘要:

We report the discovery of a low-density exoplanet transiting an 11th magnitude star in the Southern hemisphere. WASP-15b, which orbits its host star with a period P=3.7520656+-0.0000028d has a mass M_p=0.542+-0.050M_J and radius R_p=1.428+-0.077R_J, and is therefore the one of least dense transiting exoplanets so far discovered (rho_p=0.247+-0.035g cm^-3). An analysis of the spectrum of the host star shows it to be of spectral type around F5, with an effective temperature T_eff=6300+-100K and [Fe/H]=-0.17+-0.11.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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