Number of the records: 1
Stellar Wind Variations during the X-Ray High and Low States of Cygnus X-1
- 1.
SYSNO ASEP 0311901 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Stellar Wind Variations during the X-Ray High and Low States of Cygnus X-1 Title Variace hvězdného větru během vysokého a nízkého stavu X-záření Cygnu X-1 Author(s) Gies, D. R. (US)
Bolton, C. T. (CA)
Blake, R.M. (CA)
Caballero-Nieves, S.M. (US)
Crenshaw, D. M. (US)
Hadrava, Petr (ASU-R) RID, ORCID
Herrero, A. (ES)
Hillwig, T.C. (US)
Howell, S.B. (US)
Huang, W. (US)
Kaper, L. (NL)
Koubský, Pavel (ASU-R) RID, ORCID
McSwain, M.V. (US)Source Title Astrophysical Journal - ISSN 0004-637X
Roč. 678, č. 2 (2008), s. 1237-1247Number of pages 11 s. Language eng - English Country US - United States Keywords binaries stars ; spectroscopic ; early-type stars Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics R&D Projects GA202/06/0041 GA ČR - Czech Science Foundation (CSF) LC06014 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000255438800056 DOI https://doi.org/10.1086/586690 Annotation UV spectroscopy from HST of the X-ray black hole binary HD 226868 = Cyg X-1 is presented together with ground-based observations of H alpha and HeII 4686 A lines. The results are compared and match well with model UV wind line profiles assuming that X-ray ionization occurs everywhere in the wind except the zone where the supergiant blocks the X-ray flux. Workplace Astronomical Institute Contact Anežka Melichárková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2009
Number of the records: 1