2007/10/03 by Petr Hadrava, P. Hadrava, Hadrava, Petr · 1 citation
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics (astro-ph) #Emission spectrum #FOS: Physical sciences #Line (geometry) #Mechanics and Biomechanics Studies #Physics #Spectral line #Spectrograph #Spectroscopy #Star (game theory) #Telescope #astro-ph
paper · pdf · doi:10.48550/arxiv.0710.0758
published in arXiv (Cornell University) (Cornell University) · 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
arxiv created 2007/10/03 · openalex publication_date 2007/10/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The star HDE 226868 known as an optical counterpart of the black hole candidate Cyg X-1 has been observed in Halpha 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 Halpha-line into a P-Cyg profile of the (optical) primary and an emission profile of the circumstellar matter (and a telluric component).