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http://dx.doi.org/10.5303/JKAS.2011.44.3.73

PHOTOMETRIC PROPERTIES AND METALLICITY OF V1719 CYGNI  

Kim, Chul-Hee (Division of Science Education, Institute of Fusion Science, Chonbuk National University)
Yushchenko, A.V. (Odessa Astronomical Observatory, Odessa National University)
Publication Information
Journal of The Korean Astronomical Society / v.44, no.3, 2011 , pp. 73-79 More about this Journal
Abstract
We collect 24 times of light maxima data from sources in the literature, unpublished data and open databases, and investigate the variations of the observed and calculated (O-C) values for light maxima of V1719 Cyg. We found no evidence of the variations in the (O-C) values. We estimate the effective temperature and surface gravity using both the Kurucz and MARCS/SSG grids for different metallicity values [A/H]=0.0 and +0.5 for V1719 Cyg. It is confirmed that the temperature is almost the same, but, in the case of surface gravity, the MARCS/SSG grid gives the value closest to that obtained from the period-gravity relation derived by using the pulsation-evolution theory. We obtain two spectra of V1719 Cyg from spectroscopic observation which permitted us to find the effective temperature and the surface gravity of the star directly. We estimate the metallicity and it is found that the abundance of iron is equal to the solar value.
Keywords
stars: oscillation; stars: variables (${\delta}$ Scuti); stars: individual (V1719 Cyg); stars: metallicity;
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