典型文献
A Study on White Dwarf Masses in Cataclysmic Variables Based on XMM-Newton and Suzaku Observations
文献摘要：
The distribution of the mass of white dwarfs (WDs) is one of the fundamental questions in the field of cataclysmic variables (CVs). In this work, we make a systematical investigation on the WD masses in two subclass of CVs:intermediate polars (IPs) and non-magnetic CVs in the solar vicinity based on the fiux ratios of Fe XXVI–Lyαto Fe XXV–Heαemission lines (I7.0/I6.7) from archival XMM-Newton and Suzaku observations. We first verify the (semi-empirical) relations between I7.0/I6.7, the maximum emission temperature (Tmax) and the WD mass (MWD) with the mkcfiow model based on the apec description and the latest AtomDB. We then introduce a new spectral model to measure MWD directly based on the above relations. A comparison shows that the derived MWD is consistent with dynamically measured ones. Finally, we obtain the average WD masses of 58 CVs (including 36 IPs and 22 non-magnetic CVs), which is the largest X-ray selected sample. The average WD masses are=0.81 ± 0.21 M☉and =0.81± 0.21 M☉for IPs and non-magnetic CVs, respectively. These results are consistent with previous works.
文献关键词：
中图分类号：
作者姓名：
Zhuo-Li Yu;Xiao-Jie Xu;Xiang-Dong Li
作者机构：
School of Astronomy and Space Science and Key Laboratory of Modern Astronomy and Astrophysics,Nanjing University,Nanjing,210093,China
文献出处：
引用格式：
[1]Zhuo-Li Yu;Xiao-Jie Xu;Xiang-Dong Li-.A Study on White Dwarf Masses in Cataclysmic Variables Based on XMM-Newton and Suzaku Observations)[J].天文和天体物理学研究,2022(04):21-35
A类：
Dwarf,Masses,Cataclysmic,Suzaku,dwarfs,WDs,polars,IPs,fiux,XXVI,XXV,mkcfiow,apec,AtomDB
B类：
Study,White,Variables,Based,XMM,Newton,Observations,distribution,white,fundamental,questions,field,cataclysmic,variables,CVs,In,this,make,systematical,investigation,masses,two,subclass,intermediate,magnetic,solar,vicinity,ratios,Ly,He,emission,lines,I7,I6,from,archival,observations,We,first,verify,semi,empirical,relations,between,maximum,temperature,Tmax,MWD,model,description,latest,then,introduce,new,spectral,directly,above,comparison,shows,that,derived,consistent,dynamically,measured,ones,Finally,obtain,average,including,which,largest,ray,selected,sample,are,DN,respectively,These,results,previous,works
AB值：
0.442522
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