Search Results - (Author, Cooperation:S. Plachinda)

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  1. 1
    Staff View
    Publication Date:
    2014-10-21
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Vitrichenko, E. A. ; Plachinda, S. I.
    Springer
    Published 2000
    Staff View
    ISSN:
    1562-6873
    Keywords:
    stars—structure and evolution
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract Two spectra of the star BM Ori were obtained with the 2.6-m Crimean Astrophysical Observatory telescope near its maximum eclipse phase. The light detector was a CCD array. The wavelength range 5305–5373 Å was chosen in such a way that it contained no strong primary lines. Optimum filtration of the spectra yielded a signal-to-noise ratio of ∼300. Eighteen secondary lines are seen in the spectrum. Atmospheric parameters of the secondary star were determined: T eff=5740 K and logg=3.0; the secondary was classified by these parameters as being of spectral type G2 III. The best agreement between observed and synthetic spectra is achieved for metallicity [M/H]=−0.5 and microturbulence ξt=0 km s−1. The projected rotational velocity is Vsini=60 km s−, in agreement with the synchronous velocity in the hypothesis that assumes a total eclipse by the secondary star. Atmospheric elemental abundances in the secondary are estimated. Nickel, chromium, and iron exhibit an underabundance of ∼1 dex.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1134/1.20406

    Articles: DFG German National Licenses