The Rotation of the Globular Cluster 47 Tucanae in the Plane of the Sky

Details The Rotation of the Globular Cluster 47 Tucanae in the Plane of the Sky The Rotation of the Globular Cluster 47 Tucanae in the Plane of the Sky

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aj....126..772a&link_type=abstract

The Astronomical Journal, Volume 126, Issue 2, pp. 772-777.

Astronomy and Astrophysics

Astronomy

29

Astrometry, Galaxy: Globular Clusters: Individual: Ngc Number: Ngc 104, Galaxy: Globular Clusters: Individual: Name: 47 Tucanae-

Scientific paper

We have used the Hubble Space Telescope (HST) to measure the component of rotation of 47 Tuc in the plane of the sky, using background stars of the SMC as a reference. The rotation is comparable to that in the line of sight, showing that the axis of rotation of the cluster is considerably inclined. We also give an improved value of the absolute proper motion of 47 Tuc.
Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.

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