Fundamental parameters for double-lined spectroscopic and detached eclipsing binary system J064726.39 + 223431.6

doi:10.1093/mnras/stac3767

	Fundamental parameters for double-lined spectroscopic and detached eclipsing binary system J064726.39 + 223431.6
	Kovalev, Mikhail 3,4,5; Wang, Song 2; Chen XF(陈雪飞)1,4,5; Han ZW(韩占文)1,4,5
刊名	Monthly Notices of the Royal Astronomical Society
	2023-03-01
卷号	519 期号:4 页码:5454-5471
ISSN号	0035-8711
DOI	10.1093/mnras/stac3767
产权排序	第1完成单位
文献子类	Journal article (JA)
英文摘要	We present a study of the detached eclipsing binary J064726.39 + 223431.6 using spectra from the LAMOST medium-resolution spectra and Transiting Exoplanet Survey Satellite photometry. We use full-spectrum fitting to derive radial velocities and spectral parameters: Teff A,B = 6177, 5820 K, V sin iA,B = 59, 50 km s-1, and [Fe/H]A,B = -0.19 dex. The orbital solution and light-curve analysis suggest that it is a close pair of fast rotating stars on a circular orbit. We measure their masses to be MA,B = 1.307 ± 0.007, 1.129 ± 0.005 Mo and their radii to be RA,B = 1.405 ± 0.052, 1.219 ± 0.060 Ro, resulting in surface gravities of log (g)A,B = 4.259 ± 0.033, 4.319 ± 0.042 (cgs). Theoretical models cannot match all of these properties, predicting significantly higher Teff for a given metallicity. The derived age of the system is 1.56 Gyr, which indicates that both components are younger than Sun, which contradicts to much longer orbit's circularization time-scale. © 2022 The Author(s).
学科主题	天文学
URL标识	查看原文
语种	英语
出版者	Oxford University Press
资助机构	N/A
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/26047]
专题	云南天文台_大样本恒星演化研究组
作者单位	1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China 2.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China; 3.Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University, Leninskie Gory, Moscow, 119991, Russia; 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China; 5.Yunnan Observatories, China Academy of Sciences, Kunming, 650216, China;
推荐引用方式 GB/T 7714	Kovalev, Mikhail,Wang, Song,Chen XF,et al. Fundamental parameters for double-lined spectroscopic and detached eclipsing binary system J064726.39 + 223431.6[J]. Monthly Notices of the Royal Astronomical Society,2023,519(4):5454-5471.
APA	Kovalev, Mikhail,Wang, Song,陈雪飞,&韩占文.(2023).Fundamental parameters for double-lined spectroscopic and detached eclipsing binary system J064726.39 + 223431.6.Monthly Notices of the Royal Astronomical Society,519(4),5454-5471.
MLA	Kovalev, Mikhail,et al."Fundamental parameters for double-lined spectroscopic and detached eclipsing binary system J064726.39 + 223431.6".Monthly Notices of the Royal Astronomical Society 519.4(2023):5454-5471.