激变变星及相关天体的H_α与近红外电离钙三重线的光谱分析  

Spectroscopy around H_α and CaII Triplet of Cataclysmic Variables and Related Objects

作　　者：刘学富[1,2] 陈阳[1,2] 黄河[1,2] 

机构地区：[1]北京师范大学天文系,北京100875 [2]中国科学院光学天文联合实验室,上海200030

出　　处：《天体物理学报》2000年第1期33-48,共16页

基　　金：国家自然科学基金

摘　　要：给出了1997年4月15日至17日在北京天文台用2．16m望远镜卡焦光谱仪观测获得的6颗激变变星（ABBoo；UXUMa，TCrBAHHer，ZCam和V426Oph）及3颗相关天体（UMa3，EGUMa和Leo3）的CCD光谱，并同时拍摄了5颗晚型星（3Dra，Vir，Leo，34Boo和36Corn）的CCD光谱，作为晚型星参考谱．测量了观测样本星的Hα和近红外CaII的三重线（8498，8542和8662）的等值宽度（EW），谱线半极大全宽（FWHM）和现向速度（Vr），并分析了这些星的活动性．In this paper, some CCD spectra of 6 cataclysmic variables: AB Boo, T CrB, UX UMa, AH Her, Z Cam, V426 Oph and 3 related objects: Leo3, UMa3 and EG UMa are presented. We also observed 5 late-type stars: 3 Dra, v Vir, Leo, 34 Boo, and 36 Corn in order to provide comparison with the late-type component of the program systems. The observations were made using the 2.16 m telescope of Bejing Observatory with a Cassergrain spectrograph on 1997-04-15/17 at the Xinglong Station. The CCD spectra were obtained with a low resolution and a dispersion of 1.2/pixel. The spectral region covered is from 5920 to 7072, and from 7950 to 9180 for all the program stars and only 3390-8380 for AH Her. Representative spectra are given for each object. The equivalent width (EW) and FWHM of H. and Call triplet lines were determined. The radial velocities for 9 program stars were also determined. Implications of our results are discussed.

关 键 词：恒星 激变变星 光谱观测 相关天体 电离钙三重线 

分 类 号：P141.5[天文地球—天体物理]