2 citations · 2 across the 4 of their papers we have counts for
5 papers
Star-Cluster Astrometry with Ground-Based Wide Field Imagers
L. R. Bedin, J. Anderson, G. Piotto +2
We show the astrometric potential of the Wide Field Imager at the focus of the MPI-ESO 2.2m Telescope. Currently, we are able to measure the position of a well-exposed star with a…
The double main sequence of Omega Centauri
L. R. Bedin, G. Piotto, J. Anderson +4
Recent, high precision photometry of Omega Centauri, the biggest Galactic globular cluster, has been obtained with Hubble Space Telescope. The color magnitude diagram reveals an un…
Accurate Internal Proper Motions of Globular Clusters
L. R. Bedin, G. Piotto, J. Anderson +1
We have undertaken a long term program to measure high precision proper motions of nearby Galactic globular cluster (GC) stars using multi-epoch observations with the WFPC2 and the…
HST astrometry: the Galactic constant Theta_0/R_0
L. R. Bedin, G. Piotto, I. R. King +1
From multi-epoch WFPC2/HST observations we present astrometric measurements of the absolute motion of the bulge stars. The presence of an extragalactic point-source candidate allow…
The anomalous Galactic globular cluster NGC 2808
L. R. Bedin, G. Piotto, M. Zoccali +4
We present UBVI photometry for about 60,000 stars in a region of 44'x33' centered on the Galactic globular cluster (GGC) NGC 2808. The central region has been mapped with the HST W…