Distance to Cygnus X-1
暂无分享,去创建一个
[1] S. Bowyer,et al. Distance to Cygnus X-1 , 1973, Nature.
[2] J. Bregman,et al. On the Distance to Cygnus X-1 (hd 226868) , 1973 .
[3] N. Walborn. The Spectrum of HDE 226868 (=CYGNUS X-1) , 1973 .
[4] P. Conti,et al. Spectroscopic Observations of the Cygnus X-1 Optical Candidate , 1973 .
[5] B. T. Lynds. Catalogue of Dark Nebulae. , 1962 .
[6] H. L. Johnson,et al. Some Evidence for a Regional Variation in the Law of Interstellar Reddening. , 1955 .