RV and EWCAII of Galactic globular clusters (Saviane+, 2012)

Details RV and EWCAII of Galactic globular clusters (Saviane+, 2012) RV and EWCAII of Galactic globular clusters (Saviane+, 2012)

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012ycat..35409027s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/540/A27. Originally published in: 2012A&A...540A..27S

Physics

Clusters: Globular, Stars: Giant, Equivalent Widths, Radial Velocities

Scientific paper

Well determined radial velocities and abundances are essential for analyzing the properties of the Globular Cluster system of the Milky Way. However more than 50% of these clusters have no spectroscopic measure of their metallicity. In this context, this work provides new radial velocities and abundances for twenty Milky Way globular clusters which lack or have poorly known values for these quantities. The radial velocities and abundances are derived from spectra obtained at the CaII triplet using the FORS2 imager and spectrograph at the VLT, calibrated with spectra of red giants in a number of clusters with well determined abundances. For about half of the clusters in our sample we present signifiant revisions of the existing velocities or abundances, or both.
(3 data files).

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