English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Although the globular clusters in the Milky Way have been studied for a longtime, a significant fraction of them lack homogeneous metallicity and radialvelocity measurements. In an earlier paper we presented the first part of aproject to obtain metallicities and radial velocities of Galactic globularclusters from multiobject spectroscopy of their member stars using the ESO VeryLarge Telescope. In this paper we add metallicities and radial velocities for anew sample of 28 globular clusters, including in particular globular clustersin the MW halo and the Galactic bulge. Together with our previous results, thisstudy brings the number of globular clusters with homogeneous measurements to$\sim 69$ \% of those listed in the W. Harris' catalogue. As in our previouswork, we have used the CaII triplet lines to derive metallicities and radialvelocities. For most of the clusters in this study, this is the first analysisbased on spectroscopy of individual member stars. The metallicities derivedfrom the CaII triplet are then compared to the results of our parallel studybased on spectral fitting in the optical region and the implications fordifferent calibrations of the CaII triplet line strengths are discussed. Wealso comment on some interesting clusters and investigate the presence of anabundance spread in the globular clusters here. A hint of a possible intrinsicspread is found for NGC 6256, which therefore appears to be a good candidatefor further study.

astronomy and astrophysics

Homogeneous metallicities and radial velocities for Galactic globular  clusters. II. New CaT metallicities for 28 distant and reddened globular  clusters