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Welcome back, Polaris the Cepheid

arXiv:0810.4371 · doi:10.1063/1.3099259

Abstract

For about 100 years the amplitude of the 4-day pulsation in Polaris has decreased. We present new results showing a significant increase in the amplitude based on 4.5 years of continuous monitoring from the ground and with two satellite missions.

5 pages; to appear in the proceedings of the "Cool Stars 15" workshop held at St Andrews, UK