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Title:
V1357 Cyg spectroscopic monitoring in 2002-04 (Karitskaya+, 2008)
Authors:
Karitskaya, E. A.; Bochkarev, N. G.; Bondar, A. V.; Galazutdinov, G. A.; Lee, B.-K.; Musaev, F. A.; Sapar, A. A.; Shimansky, V. V.
Publication:
VizieR On-line Data Catalog: J/AZh/85/409. Originally published in: 2008AZh....85..409K; 2008ARep...52..362K
Publication Date:
11/2008
Origin:
SIMBAD
Objects:
V1357 Cyg = X Cyg X-1 = HD 226868
Keywords:
Binaries: X-ray, Spectroscopy, Line Profiles
Comment:
table1.dat 34x72 Log of observations of V1357 Cyg; table2.dat 194x25 Stellar lines identified in the spectrum of; V1357 Cyg
Bibliographic Code:
2008yCat..80850409K

Abstract

The results of Cyg X-1 = HDE 226868/V1357 Cyg optical spectral monitoring in 2002-2004 are discussed. Spectral observations were carried out on Peak Terskol Observatory (Kabardino-Balkaria, Russia, resolution R=45000 and 13000) and Bohyunsan Optical Astronomy Observatory (BOAO, Korea, R=30000, 44000). Each spectrum covers the main part of optical spectral range. During 33 observational nights 75 echelle spectra were obtained in the times of the "soft" and "hard" states of Cyg X-1. The X-ray influence on spectral line profiles was studied. The RXTE/ASM data were used for this purpose. The X-ray flare resulted in strong variations of Halpha and HeII4686{AA} emission component profiles during night. This behaviour we connect with variations of ionization structure of matter in the system. Line profile variations with the orbital phase were observed. The spectral atlas for Cyg X-1 was constructed. The contented line identification was done. There were revealed 172 lines and blends which belong to 12 chemical elements: H, He, C, N, O, Ne, Mg, Al, Si, S, Fe, Zn. The HDE 226868 spectral classification as ON star was confirmed.

(2 data files).

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