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The Pulsation Mode of Polaris

Published online by Cambridge University Press:  12 April 2016

P. Moskalik  and
W. Ogloza
P. Moskalik
Affiliation:
Copernicus Astron. Center, ul. Bartycka 18, 00-716 Warsaw, Poland
W. Ogloza
Affiliation:
Copernicus Astron. Center, ul. Bartycka 18, 00-716 Warsaw, Poland

Abstract

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Polaris (α UMi) is the only classical Cepheid with Hipparcos parallax determined to better than 10% (Feast & Catchpole 1997). The correct identification of its pulsation mode is therefore crucial for calibrating the Cepheid period–luminosity relation. We show that Polaris is an overtone pulsator. Our analysis confirms the finding of Feast & Catchpole, but is entirely independent of the distance estimation.

Type
Part 3. Cepheids, RR Lyrae Stars, Distance Scales
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 237 - 238
Copyright
Copyright © Astronomical Society of the Pacific 2000

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