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Table · dataset · 2012

Proper motion study of M55 stars

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We have derived the absolute proper motion (PM) of the globular cluster M55 using a large set of CCD images collected with the du Pont telescope between 1997 and 2008.

Description

We find (pmRAcosDE, pmDE)=(-3.31+/-0.10, -9.14+/-0.15)mas/yr relative to background galaxies. Membership status was determined for 16945 stars with 14<V<21 from the central part of the cluster.

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