The Hipparcos parallax for Polaris

Abstract

This letter follows a recent claim that the Hipparcos parallax for Polaris could be too small by 2.5 mas. It examines in detail the Hipparcos epoch astrometric data for Polaris, as well as the viability of other observations that were put forward to support a larger parallax. The Hipparcos determination of the Polaris parallax is shown to be sufficiently robust to fully exclude a significantly larger parallax, and there is no observational support from other observations, such as a supposed presence of a cluster, either.

3 pages, 6 figures, Accepted for publication by A&A

References in corpus (2)

• Cepheid Parallaxes and the Hubble Constant
• The Pulsation Mode of the Cepheid Polaris

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• The Orbit of the Close Companion of Polaris: Hubble Space Telescope Imaging 2007 to 2014
• Anchors for the Cosmic Distance Scale: the Cepheid QZ Normae in the Open Cluster NGC 6067
• Revisiting the fundamental properties of Cepheid Polaris using detailed stellar evolution models
• The Pulsation Mode and Distance of the Cepheid FF Aquilae
• Precise Fourier parameters of Cepheid Radial Velocity Curves
• On the Crucial Cluster Andrews-Lindsay 1 and a 4% Distance Solution for its PN