The Nature of the Doppler Shift Residuals and Some Peculiar Phenomena of SS 433
The Nature of the Doppler Shift Residuals and Some Peculiar Phenomena of SS 433
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SS 433 多普勒频移残余的性质和一些特殊现象
DOI：
10.1086/172745
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
T. Iijima
中科院分区：
文献类型：
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作者：
T. Iijima
从1987年到1992年，对特殊变天体SS 433的光学区进行了光谱观测。H I和He I的运动发射线的行为与分别为163 d和6 d的进动和点头运动相结合的预测结果基本一致。因此，所谓的动态模型是有效的。多普勒频移的部分残余可能是由于射流流出速度的变化。特别是，绝对值小于3000 km s -1的残差可以很好地解释为这种流出速度变化的结果。另一方面，还应该存在其他导致较大残差的不稳定性。1991年10月2日观测到Hα移动线的破碎
Spectroscopic observations in the optical region of the peculiar variable object SS 433 were carried out in the years from 1987 to 1992. The behavior of the moving emission lines of H I and He I basically agrees with those predicted from a combination of the precessional and the nodding motions with periods of 163 days and 6 days, respectively. Thus the so-called dynamic model has been efficient. Part of the residuals of the Doppler shifts may be due to variations in the outflow velocity of the jets. In particular, the residuals with absolute values less than 3000 km s -1 can be well explained as a result of such outflow velocity variations. On the other hand, there should be also other instabilities which lead to larger residuals. A fragmentation of the moving line of Hα was observed on 1991 October 2