典型文献
Physical Properties of 29 sdB+dM Eclipsing Binaries in Zwicky Transient Facility
文献摘要：
The development of large-scale time-domain surveys provides an opportunity to study the physical properties as well as the evolutionary scenario of B-type subdwarfs(sdBs)and M-type dwarfs(dMs).Here,we obtained 33 sdB+dM eclipsing binaries based on the Zwicky Transient Facility(ZTF)light curves and Gaia Early Data Release 3(EDR3)parallaxes.By using the PHOEBE code for light curve analysis,we obtain probability distributions for parameters of 29 sdB+dMs.R1,R2 and i are well determined,and the average uncertainty of mass ratio q is 0.08.Our parameters are in good agreement with previous works if a typical mass of sdB is assumed.Based on parameters of 29 sdB+dMs,we find that both the mass ratio q and the companion's radius R2 decrease with the shortening of the orbital period.For the three sdB+dMs with orbital periods less than 0.075 days,their companions are all brown dwarfs.The masses and radii of the companions satisfy the mass-radius relation for low-mass stars and brown dwarfs.Companions with radii between 0.12 R☉ and 0.15 R☉ seem to be missing in the observations.As more short-period sdB+dM eclipsing binaries are discovered and classified in the future with ZTF and Gaia,we will have more information to constrain the evolutionary ending of sdB+dMs.
文献关键词：
中图分类号：
作者姓名：
Min Dai;Xiao-Dian Chen;Kun Wang;Yang-Ping Luo;Shu Wang;Li-Cai Deng
作者机构：
School of Physics and Astronomy,China West Normal University,Nanchong 637002,China;CAS Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;School of Astronomy and Space Science,University of the Chinese Academy of Sciences,Beijing 101408,China
文献出处：
引用格式：
[1]Min Dai;Xiao-Dian Chen;Kun Wang;Yang-Ping Luo;Shu Wang;Li-Cai Deng-.Physical Properties of 29 sdB+dM Eclipsing Binaries in Zwicky Transient Facility)[J].天文和天体物理学研究,2022(03):221-245
A类：
sdB+dM,Eclipsing,Binaries,subdwarfs,sdBs,dwarfs,dMs,eclipsing,binaries,ZTF,EDR3,parallaxes,PHOEBE,sdB+dMs,sdB,companions,Companions
B类：
Physical,Properties,Zwicky,Transient,Facility,development,large,scale,domain,surveys,provides,opportunity,study,physical,properties,well,evolutionary,scenario,type,Here,obtained,light,curves,Gaia,Early,Data,Release,By,using,code,analysis,probability,distributions,parameters,R1,are,determined,average,uncertainty,ratio,Our,good,agreement,previous,works,typical,assumed,Based,find,that,both,radius,decrease,shortening,orbital,For,three,periods,less,than,days,their,brown,masses,radii,satisfy,relation,low,stars,between,seem,missing,observations,more,discovered,classified,future,will,have,information,constrain,ending
AB值：
0.39765
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