High-Precision Radial Velocities for a Large Sample of M31 Globular Clusters

Details High-Precision Radial Velocities for a Large Sample of M31 Globular Clusters High-Precision Radial Velocities for a Large Sample of M31 Globular Clusters

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aspc..182..431p&link_type=abstract

Galaxy Dynamics, proceedings of a conference held at Rutgers University, 8-12 Aug 1998. ASP Conference Series vol. 182 (San Fran

Physics

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Scientific paper

Globular clusters in galaxies provide excellent test particles of the underlying potential out to many effective radii (reff). The kinematics of globular clusters in NGC 1399, the central cD elliptical in Fornax, and M87, the central giant elliptical in Virgo, are presented as two examples. In NGC 1399, globular clusters show signs of orbital anisotropy as well as a transition between the gravitational potentials dominated by the central galaxy and by the galaxy cluster, with most globular clusters being associated with the latter. In M87, we detected significant rotation in the halo at 3 - 4 reff, implying that one major merger probably dominated the past history of the galaxy.

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