典型文献
KIC 10417986:Spectroscopic Confirmation of the Nature of the Binary System with a δ Scuti Component
文献摘要：
KIC 10417986 is a short orbital period(0.0737 day)ellipsoidal variable star with a δ Set and γ Dor hybrid pulsation component discovered by Kepler.The ground-based spectroscopic observations were carried out in the winters of 2020 and 2021 to investigate the binary nature of this star.We derive the orbital parameters using the rvfit code with a result of K1=29.7±1.5 km s-1,γ=-18.7±1.7 km s-1,and confirm an orbital period of 0.84495 day instead of the result given by Kepler.The atmospheric parameters of the primary are determined by the synthetic spectral fitting technique with the estimated values of Teff=7411±187 K,log g=4.2±0.3 dex,[M/H]=0.08±0.09 dex and vsini=52±11 km s-1.KIC 10417986 is a circular orbit binary system.From the single-lined nature and mass function of the star,the derived orbital inclination is 26°±6°,and the mass of the secondary is 0.52+0.18-0.09 Mo,which should be a late-K to early-M type star.Fourteen frequencies are extracted from Kepler light curves,of which six independent frequencies in the high-frequency region are identified as the p-mode pulsations of δ Set star,and one independent frequency in the low-frequency region(f2=1.3033 cd-1)is probably the rotational frequency due to the starspots rather than the ellipsoidal effect.
文献关键词：
中图分类号：
作者姓名：
Guo-Jie Feng;Ali Esamdin;Jian-Ning Fu;Hu-Biao Niu;Peng Zong;Tao-Zhi Yang;Shu-Guo Ma;Jing Xu;Chun-Hai Bai;Yong Wang;Wei-Chao Sun;Xin-Liang Wang
作者机构：
Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi,Xinjiang 830011,China;University of Chinese Academy of Sciences,Beijing 100049,China;Department of Astronomy,Beijing Normal University,Beijing 100875,China;Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter,School of Physics,Xi,an Jiaotong University,710049 Xi'an,China
文献出处：
引用格式：
[1]Guo-Jie Feng;Ali Esamdin;Jian-Ning Fu;Hu-Biao Niu;Peng Zong;Tao-Zhi Yang;Shu-Guo Ma;Jing Xu;Chun-Hai Bai;Yong Wang;Wei-Chao Sun;Xin-Liang Wang-.KIC 10417986:Spectroscopic Confirmation of the Nature of the Binary System with a δ Scuti Component)[J].天文和天体物理学研究,2022(10):49-60
A类：
Scuti,rvfit,vsini,52+0,pulsations,starspots
B类：
KIC,Spectroscopic,Confirmation,Nature,Binary,System,Component,short,orbital,period,day,ellipsoidal,variable,Set,Dor,hybrid,component,discovered,by,Kepler,ground,spectroscopic,observations,were,carried,out,winters,investigate,binary,nature,this,We,parameters,using,code,result,K1,confirm,instead,given,atmospheric,primary,are,determined,synthetic,spectral,fitting,technique,estimated,values,Teff,log,dex,circular,system,From,single,lined,mass,function,derived,inclination,secondary,Mo,which,should,be,late,early,type,Fourteen,frequencies,extracted,from,light,curves,six,independent,high,frequency,region,identified,mode,low,f2,cd,probably,rotational,due,rather,than,effect
AB值：
0.525044
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