... 52Mb (compressed form) and includes high-quality spectral data dor numerous stars of different types (subdwarfs, cepheids, RVTau type stars, symbiotic stars, classical and peculiar supergiants, stars inside globular and open clusters, lambda Boo type ...
... Usenko, I. A.; Miroshnichenko, A. S.; Klochkova, V. G.; Yushkin, M. V. Polaris, the nearest Cepheid in the Galaxy: atmosphere parameters, reddening and chemical composition // 2005, Monthly Notices of the Royal Astronomical Society, Vol. ...
... Its numerical coefficients were calibrated by Piotto et al. (1992) and Karachentsev & Tikhonov (1994) using galaxies with known distances from Cepheids. ...
... Klochkova V.G., Panchuk V.E. Spectroscopic study of metallicity of cepheids. Sov. ... Klochkova V.G. The problem of chemical composition of the I population cepheids. ...
... with a changed H/He ratio has been previously considered by Sonneborn et al. (1979) in connection with the helium abundance in Cepheid envelopes and by Ё Bohm-Vitense (1979) in connection with molecularband intensity variations in globular-cluster giants ...
... Its distance, 3.16 Mpc, determined via the TRGB, is consistent within errors with the distance of IC342 itself, 3.28 Mpc, defined via the Cepheids. ...