Optical spectroscopy of Cyg X-1

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The star HDE 226868 known as an optical counterpart of the black hole candidate Cyg X-1 has been observed in H_alpha region using spectrograph at Ondrejov 2-m telescope. The orbital parameters are determined from HeI-line by means of the author's method of Fourier disentangling. Preliminary results are also presented of disentangling the H_alpha-line into a P-Cyg profile of the (optical) primary and an emission profile of the circumstellar matter (and a telluric component).
Proceedings of RAGtime 9: Workshops on black holes and neutron stars, S. Hledik & Z. Stuchlik eds., Silesian University in Opava, Czech Republic, 8 pages, 5 figures

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/139230

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0710.0758
 http://arxiv.org/abs/0710.0758

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arXiv