Star Clusters in the Galactic Anticenter Stellar Structure: New Radial Velocities & Metallicities

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

The Galactic Anticenter Stellar Structure (GASS) has been identified with excess surface densities of field stars in several large area sky surveys, and with an unusual, string-like grouping of star clusters. Some members of the cluster grouping have radial velocities (RVs) consistent with the observed GASS velocity-longitude trend. We provide new RV measurements of stars in six clusters that have been suggested to be associated with the GASS. We show that the RVs of at least four clusters are consistent with the previously measured RV trend for GASS. We also derive spectroscopic metallicities for four clusters, and provide an improved age-metallicity relation for the clusters apparently associated with GASS.
To appear in Chemical Abundances and Mixing in Stars in the Milky Way Galaxy and its Satellites, ESO Astrophysics Symposia, ed. L. Pasquini & S. Randich (Springer-Verlag Press), 2 pages, 2 figures

Keywords

Astrophysics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/8492

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0411127
 http://arxiv.org/abs/astro-ph/0411127

Collections

arXiv