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arXiv 2307.06809astro-ph.EP
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TOI 4201 b与TOI 5344 b:发现两颗围绕M型矮星凌星的巨行星,并修订另外三颗行星的参数

TOI 4201 b and TOI 5344 b: Discovery of Two Transiting Giant Planets Around M Dwarf Stars and Revised Parameters for Three Others

J. D. Hartman, G. Á. Bakos, Z. Csubry, A. W. Howard, H. Isaacson, S. Giacalone, A. Chontos, N. Narita, A. Fukui, J. P. de Leon, N. Watanabe, M. Mori, T. Kagetan… 展开作者

J. D. Hartman, G. Á. Bakos, Z. Csubry, A. W. Howard, H. Isaacson, S. Giacalone, A. Chontos, N. Narita, A. Fukui, J. P. de Leon, N. Watanabe, M. Mori, T. Kagetani, I. Fukuda, Y. Kawai, M. Ikoma, E. Palle, F. Murgas, E. Esparza-Borges, H. Parviainen, L. G. Bouma, M. Cointepas, X. Bonfils, J. M. Almenara, Karen A. Collins, Kevin I. Collins, Howard M. Relles, Khalid Barkaoui, Richard P. Schwarz, Ghachoui Mourad, Mathilde Timmermans, Georgina Dransfield, Artem Burdanov, Julien de Wit, Emmanuël Jehin, Amaury H. M. J. Triaud, Michaël Gillon, Zouhair Benkhaldoun, Keith Horne, Ramotholo Sefako, A. Jordán, R. Brahm, V. Suc, Steve B. Howell, E. Furlan, J. E. Schlieder, D. Ciardi, T. Barclay, E. J. Gonzales, I. Crossfield, C. D. Dressing, M. Goliguzova, A. Tatarnikov, George R. Ricker, Roland Vanderspek, David W. Latham, S. Seager, Joshua N. Winn, Jon M. Jenkins, Stephanie Striegel, Avi Shporer, Andrew Vanderburg, Alan M. Levine, Veselin B. Kostov, David Watanabe

AI总结:

本研究利用TESS发现两颗绕M型矮星凌星的巨行星,并结合视向速度更新五个行星系统参数,支持近距巨行星偏好富金属M型矮星,还提出恒星演化模型系统误差校正流程。

摘要:

我们报告了TESS任务发现的两颗围绕M型矮星凌星的巨行星:TOI 4201 b和TOI 5344 b。我们还为另外三颗拥有凌星巨行星的M型矮星——TOI 519、TOI 3629和TOI 3714——提供了精确的视向速度测量和更新后的系统参数。我们测得TOI 519 b、TOI 3629 b、TOI 3714 b、TOI 4201 b和TOI 5344 b的行星质量分别为0.525 ± 0.064 M_J、0.243 ± 0.020 M_J、0.689 ± 0.030 M_J、2.57 ± 0.15 M_J和0.412 ± 0.040 M_J。相应的恒星质量为0.372 ± 0.018 M_s、0.635 ± 0.032 M_s、0.522 ± 0.028 M_s、0.625 ± 0.033 M_s和0.612 ± 0.034 M_s。五个宿主星均具有超太阳金属丰度,这进一步支持了近期的发现:与类太阳恒星一样,近距巨行星更倾向于出现在富金属的M型矮星宿主周围。最后,我们描述了一种在将恒星演化模型直接纳入凌星行星系统拟合时,处理这些模型中系统误差的流程。

英文摘要:

We present the discovery from the TESS mission of two giant planets transiting M dwarf stars: TOI 4201 b and TOI 5344 b. We also provide precise radial velocity measurements and updated system parameters for three other M dwarfs with transiting giant planets: TOI 519, TOI 3629 and TOI 3714. We measure planetary masses of 0.525 +- 0.064 M_J, 0.243 +- 0.020 M_J, 0.689 +- 0.030 M_J, 2.57 +- 0.15 M_J, and 0.412 +- 0.040 M_J for TOI 519 b, TOI 3629 b, TOI 3714 b, TOI 4201 b, and TOI 5344 b, respectively. The corresponding stellar masses are 0.372 +- 0.018 M_s, 0.635 +- 0.032 M_s, 0.522 +- 0.028 M_s, 0.625 +- 0.033 M_s and 0.612 +- 0.034 M_s. All five hosts have super-solar metallicities, providing further support for recent findings that, like for solar-type stars, close-in giant planets are preferentially found around metal-rich M dwarf host stars. Finally, we describe a procedure for accounting for systematic errors in stellar evolution models when those models are included directly in fitting a transiting planet system.

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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