Volume 550, February 2013
|Number of page(s)||3|
|Published online||22 January 2013|
The HIPPARCOS parallax for Polaris
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3OHA,
Received: 7 December 2012
Accepted: 3 January 2013
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.
Key words: astrometry / parallaxes / stars: variables: Cepheids
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.