Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.132..125s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 132, no. 1, April 1987, p. 125-139.
Astronomy and Astrophysics
Astrophysics
Eclipsing Binary Stars, Stellar Color, Stellar Luminosity, Stellar Spectra, Variable Stars, Astronomical Catalogs, Interstellar Extinction, Spectrum Analysis, Stellar Envelopes, Ubv Spectra
Scientific paper
The colour indices and the spectrum-luminosity classification of the eclipsing binary system IZ Persei have been presented for the first time. The colour indices of the system appear reddened. Applying the interstellar reddening corrections, the spectral-luminosity classes of the primary and the secondary components of IZ Per come out to be B2.5 III-V and B5 III-V, respectively. The average B-V and U-B colour excesses come out to be 0m.4 and 0m.2, respectively. The colour indices show continuous variation throughout the cycle, and indicate the presence of intrinsic variability. Tentative analysis suggests that the primary component of IZ Per is a β CMa-type variable. The possibility of a shell has also been discussed.
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