Comparative Study of TESS Photometry and Radial Velocities on Six Early K-type Contact Binaries with Similar Periods around 0.268 Day | |
Liu NP(刘念平)4,5; Qian SB(钱声帮)3,4,5; Liao WP(廖文萍)3,4,5; Huang, Y.2; Yuan, Z.-L.1 | |
刊名 | ASTRONOMICAL JOURNAL |
2023-06-01 | |
卷号 | 165期号:6 |
ISSN号 | 0004-6256 |
DOI | 10.3847/1538-3881/acd04e |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | High-precision light curves were extracted from TESScut images. Together with APOGEE and LAMOST medium-resolution spectra, a joint study was made for six early K-type contact binary candidates selected unbiasedly with orbital periods around 0.268 day. It is found that all of them (RV CVn, EK Com, V384 Ser, V1038 Her, EH CVn, and CSS_J125403.7+503945) are W-subtype shallow contact systems, though with different mass ratios (1/q = 0.27-0.62). The effective temperature differences between the binary components are around a few hundred kelvins. The original definitions of the A and W subtypes were compared with the customarily used methods, which rely on the shape or photometric solutions of the light curves. The latter two methods are not always reliable; therefore, the radial velocity analysis is strongly recommended. Through a collection of all available K-type contact binaries with both photometric and spectroscopic measurements, it is found that almost all of them are W-subtype systems, except for a few objects that have nearly identical temperatures for binary components. This W-subtype phenomenon for K-type contact binaries should be further checked with more samples in the future. Finally, the physical parameters of the targets were determined with joint data analysis, and the multiplicity is discussed for these targets. Objects V384 Ser and RV CVn are confirmed to very likely be triple systems from comprehensive analysis, while V1038 Her is a candidate of a triple system based on photometric and spectroscopic solutions. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | TESS team ; NASA Science Mission directorate ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Center for High Performance Computing at the University of Utah ; Brazilian Participation Group ; Carnegie Institution for Science ; Chilean Participation Group ; French Participation Group ; Harvard-Smithsonian Center for Astrophysics ; Carnegie Mellon University ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Instituto de Astrofisica de Canarias ; Korean Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; National Astronomical Observatories of China ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; New York University ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; University of Notre Dame ; New Mexico State University ; Observatario Nacional/MCTI ; Shanghai Astronomical Observatory ; Ohio State University ; University of Portsmouth ; Pennsylvania State University ; University of Utah ; United Kingdom Participation Group ; University of Virginia ; Universidad Nacional Autonoma de Mexico ; University of Wisconsin ; University of Arizona ; National Development and Reform Commission ; University of Colorado Boulder ; University of Oxford ; National Natural Science Foundation of China[11933008] ; National Natural Science Foundation of China[11873017] ; National Natural Science Foundation of China[12073069] ; University of Washington ; Yunnan Natural Science Foundation[202001AT070091] ; Vanderbilt University ; Xiaoxiang Scholars Programme of Hunan Normal University ; Yale University |
WOS关键词 | LIGHT-CURVE ANALYSIS ; PHYSICAL PARAMETERS ; ECLIPSING BINARIES ; DATA RELEASE ; STAR LIGHT ; EVOLUTIONARY HISTORY ; ENERGY-TRANSPORT ; MASS-LUMINOSITY ; KEPLER-MISSION ; SYSTEMS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000999116600001 |
资助机构 | TESS team ; NASA Science Mission directorate ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Center for High Performance Computing at the University of Utah ; Brazilian Participation Group ; Carnegie Institution for Science ; Chilean Participation Group ; French Participation Group ; Harvard-Smithsonian Center for Astrophysics ; Carnegie Mellon University ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Instituto de Astrofisica de Canarias ; Korean Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; National Astronomical Observatories of China ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; New York University ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; University of Notre Dame ; New Mexico State University ; Observatario Nacional/MCTI ; Shanghai Astronomical Observatory ; Ohio State University ; University of Portsmouth ; Pennsylvania State University ; University of Utah ; United Kingdom Participation Group ; University of Virginia ; Universidad Nacional Autonoma de Mexico ; University of Wisconsin ; University of Arizona ; National Development and Reform Commission ; University of Colorado Boulder ; University of Oxford ; National Natural Science Foundation of China[11933008, 11873017, 12073069] ; University of Washington ; Yunnan Natural Science Foundation[202001AT070091] ; Vanderbilt University ; Xiaoxiang Scholars Programme of Hunan Normal University ; Yale University |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26063] |
专题 | 云南天文台_双星与变星研究组 |
通讯作者 | Liu NP(刘念平) |
作者单位 | 1.Department of Physics and Electronics, Hunan Normal University, Changsha 410081, People's Republic of China 2.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650500, People's Republic of China; 3.University of Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, Beijing 100049, People's Republic of China; 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; 5.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; lnp@ynao.ac.cn; |
推荐引用方式 GB/T 7714 | Liu NP,Qian SB,Liao WP,et al. Comparative Study of TESS Photometry and Radial Velocities on Six Early K-type Contact Binaries with Similar Periods around 0.268 Day[J]. ASTRONOMICAL JOURNAL,2023,165(6). |
APA | Liu NP,Qian SB,Liao WP,Huang, Y.,&Yuan, Z.-L..(2023).Comparative Study of TESS Photometry and Radial Velocities on Six Early K-type Contact Binaries with Similar Periods around 0.268 Day.ASTRONOMICAL JOURNAL,165(6). |
MLA | Liu NP,et al."Comparative Study of TESS Photometry and Radial Velocities on Six Early K-type Contact Binaries with Similar Periods around 0.268 Day".ASTRONOMICAL JOURNAL 165.6(2023). |
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