Effective temperature and radial velocity of the small-amplitude Cepheid Polaris (alpha UMi) in 2015

12 Oct 2016 Usenko I. A. Kovtyukh V. V. Miroshnichenko A. S. Danford S.

We present the results of an analysis of 21 spectra of alpha UMi (Polaris) obtained in September - December 2015. Frequency analysis shows an increase of the pulsation period up to 8.6 min in comparison to the 2007 observational set... (read more)

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  • SOLAR AND STELLAR ASTROPHYSICS