Usenko, I.A.; Kovtyukh, V.V.; Miroshnichenko, A.S.; Danford, S.
(Наука та інновації, 2017)
The pulsation activity of small-amplitude Cepheid Alpha UMi (Polaris) during the period of its radial velocity observations
has been analyzed. In the 20th century, Polaris was known to demonstrate a decrease in radial ...