IV. On Wolf and Rayet's bright-line stars in Cygnus
@article{HugginsIVOW, title={IV. On Wolf and Rayet's bright-line stars in Cygnus}, author={William Sir Huggins and Margaret Lindsay Huggins}, journal={Proceedings of the Royal Society of London}, volume={49}, pages={33 - 46} }
In 1867 MM. Wolf and Rayet discovered at the Paris Observatory three small stars in Cygnus, which in the spectroscope showed several bright lines upon a continuous spectrum. All three stars have a very bright band in the blue part of the spectrum. These stars are: –B. D. + 35°, No. 4001. B. D. + 35°, No. 4013. B. D. + 36°, No. 3956.