SIMBAD references

1995A&AS..112...89P - Astron. Astrophys., Suppl. Ser., 112, 89-93 (1995/July-0)

Astrometry of 19 globular clusters.

PICARD A. and JOHNSTON H.M.

Abstract (from CDS):

We present accurate positions for the center of 19 globular clusters, 8 of which are known to contain X-ray sources and/or pulsars. The positions are based on a new centroiding algorithm applied to CCD images of the clusters. The fundamental astrometry is performed with plates from the ESO Schmidt telescope, using the Hipparcos Input Catalogue as a list of primary astrometric standards.

Abstract Copyright:

Journal keyword(s): globular cluster - astrometry

Simbad objects: 19

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