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New Findings Supporting the Presence of Several Distinct Structures of Circumstellar Matter in β Lyræ

Published online by Cambridge University Press:  12 July 2007

P. Chadima
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, CZ-180 00 Praha 8, Czech Republic email: [email protected], [email protected], [email protected]
P. Harmanec
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, CZ-180 00 Praha 8, Czech Republic email: [email protected], [email protected], [email protected] Astronomical Institute of the Academy of Sciences, CZ-251 65 Ondřejov, Czech Republic email: [email protected], [email protected], [email protected]
H Ak
Affiliation:
Department of Astronomy & Space Sciences, Faculty of Arts & Sciences, Erciyes University, 38039 Kayseri, Turkey, email: [email protected]
O. Demirçan
Affiliation:
Department of Physics, Faculty of Sciences and Arts, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey, email: [email protected]
S. Yang
Affiliation:
Department of Physics and Astronomy, University of Victoria, P.O. Box 3055 STN CSC, Victoria, B.C., CanadaV8W 3P6, email: [email protected]
P. Koubský
Affiliation:
Astronomical Institute of the Academy of Sciences, CZ-251 65 Ondřejov, Czech Republic email: [email protected], [email protected], [email protected]
P. Škoda
Affiliation:
Astronomical Institute of the Academy of Sciences, CZ-251 65 Ondřejov, Czech Republic email: [email protected], [email protected], [email protected]
M. Šlechta
Affiliation:
Astronomical Institute of the Academy of Sciences, CZ-251 65 Ondřejov, Czech Republic email: [email protected], [email protected], [email protected]
M. Wolf
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, CZ-180 00 Praha 8, Czech Republic email: [email protected], [email protected], [email protected]
H. Božić
Affiliation:
Hvar Observatory, Faculty of Geodesy, Kačićeva 26, 10000 Zagreb, Croatia email: [email protected], [email protected], [email protected]
D. Ruždjak
Affiliation:
Hvar Observatory, Faculty of Geodesy, Kačićeva 26, 10000 Zagreb, Croatia email: [email protected], [email protected], [email protected]
D. Sudar
Affiliation:
Hvar Observatory, Faculty of Geodesy, Kačićeva 26, 10000 Zagreb, Croatia email: [email protected], [email protected], [email protected]
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Abstract

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(1) 52 photographic and 651 electronic spectra were disentangled using the program KOREL. This led to the detection of a number of weak absorption lines originating in the atmosphere of the accretion disk. So far, the detection of this disk spectrum was only reported for the Si 6347 and 6371 Å doublet. (2) The basic spectrophotometric quantities of 15 absorption lines of the primary were measured and corrected for the orbital light changes in order to eliminate the contribution of the secondary light to the observed continuum level. After the correction, a significant phase dependency of the spectral-line characteristics near the primary eclipse was detected. In all probability, another so far unknown absorption-line spectrum was thus found. This spectrum may be due to additional absorption of light of the primary in one of the jet-like structures and in the spherical gas envelope surrounding the accretion disk. Both these structures are seen projected against the primary during its eclipse.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2007

References

Hadrava, P. 2004, Publications of Astron. Inst. of Academy of Sciences of the Czech Rep. 92, 15 Google Scholar
Harmanec, P. 2002, Astronomische Nachrichten 323, 87 3.0.CO;2-P>CrossRefGoogle Scholar
Linnell, A.P. 2000, MNRAS 319, 255 CrossRefGoogle Scholar
Supplementary material: PDF

chadima2

Symposium poster

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