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arXiv 1909.12424astro-ph.EP
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NGTS-10 b:迄今发现的最短周期热木星

NGTS-10b: The shortest period hot Jupiter yet discovered

James McCormac, Edward Gillen, James A. G. Jackman, David J. A. Brown, Daniel Bayliss, Peter J. Wheatley, Richard G. West, David R. Anderson, David J. Armstrong… 展开作者

James McCormac, Edward Gillen, James A. G. Jackman, David J. A. Brown, Daniel Bayliss, Peter J. Wheatley, Richard G. West, David R. Anderson, David J. Armstrong, Francois Bouchy, Joshua T. Briegal, Matthew R. Burleigh, Juan Cabrera, Sarah L. Casewell, Alexander Chaushev, Bruno Chazelas, Paul Chote, Benjamin F. Cooke, Jean C. Costes, Szilard Csizmadia, Philipp Eigmuller, Anders Erikson, Emma Foxell, Boris T. Gaensicke, Michael R. Goad, Maximilian N. Gunther, Simon T. Hodgkin, Matthew J. Hooton, James S. Jenkins, Gregory Lambert, Monika Lendl, Emma Longstaff, Tom Louden, Maximiliano Moyano, Louise D. Nielsen, Don Pollacco, Didier Queloz, Heike Rauer, Liam Raynard, Alexis M. S. Smith, Barry Smalley, Maritza Soto, Oliver Turner, Stephane Udry, Jose I. Vines, Simon. R. Walker, Christopher A. Watson

摘要:

我们报告了下一代凌日巡天(NGTS)发现的一个新的超短周期凌日热木星。NGTS-10 b的质量和半径分别为$2.162\,^{+0.092}_{-0.107}$ M $_{\rm J}$和$1.205\,^{+0.117}_{-0.083}$ R $_{\rm J}$,其轨道周期为$0.7668944\pm0.0000003$天,是迄今发现的周期最短的热木星。它的宿主是一颗$10.4\pm2.5$ Gyr老K5 V恒星($T_\mathrm{eff}$ = $4400\pm100$ \,K),太阳金属丰度([Fe/H] = $-0.02\pm0.12$ \,dex)显示出中等的恒星活动迹象。NGTS-10 b加入了超短周期彗星的短名单,这些彗星是研究恒星-行星潮汐相互作用的主要候选者。NGTS-10 b在$1.46\pm0.18$ Roche半径处围绕其宿主运行,我们计算了$38$ \,Myr的中值剩余螺旋时间和未来十年可能测量的$7$ \,秒的过境时间偏移,假设恒星潮汐质量因子$Q'_{\rm s}=2\times10^{7}$。

英文摘要:

We report the discovery of a new ultra-short period transiting hot Jupiter from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius of $2.162\,^{+0.092}_{-0.107}$ M$_{\rm J}$ and $1.205\,^{+0.117}_{-0.083}$ R$_{\rm J}$ and orbits its host star with a period of $0.7668944\pm0.0000003$ days, making it the shortest period hot Jupiter yet discovered. The host is a $10.4\pm2.5$ Gyr old K5V star ($T_\mathrm{eff}$=$4400\pm100$\,K) of Solar metallicity ([Fe/H] = $-0.02\pm0.12$\,dex) showing moderate signs of stellar activity. NGTS-10b joins a short list of ultra-short period Jupiters that are prime candidates for the study of star-planet tidal interactions. NGTS-10b orbits its host at just $1.46\pm0.18$ Roche radii, and we calculate a median remaining inspiral time of $38$\,Myr and a potentially measurable transit time shift of $7$\,seconds over the coming decade, assuming a stellar tidal quality factor $Q'_{\rm s}=2\times10^{7}$.

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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