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Title:
Study of variability of 2MASSJ10183905+0014078 stellar objects
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stars ; variability ; UV Cet - stars ; individual ; 2MASSJ10183905 + 001407
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Abstract:
This paper presents observational data for the star 2MASSJ10183905+0014078 (UCAC4 452- 048383), in which so far no brightness variability has been detected. However, photometric observations made in 2015 allowed recording are activity with an amplitude of 0.8 m for this star. The star parameters, namely magnitude and color index (V0 = 7.59, (B - V)0 = 1.19) and, therefore, the position on the Hertzsprung-Russell diagram, luminosity (Lo = 0.1), spectral class (K7), mass (Mo = 0.6), the spectral characteristics in the optical (Ca, Fe, Na D, Ha lines, Mg H, and TiO bands) and X-ray ranges allow us to classify the star as UVCet type object. The ash profile can be attributed to type II, with a relatively slow increase and decrease in brightness.