Bibcode
Carrera, R.; Gallart, C.; Zinn, R.; Pancino, E.; Hardy, E.
Bibliographical reference
"Origin and Evolution of the Elements, from the Carnegie Observatories Centennial Symposia. Carnegie Observatories Astrophysics Series. Edited by A. McWilliam and M. Rauch, 2004. Pasadena: Carnegie Observatories, http://www.ociw.edu/ociw/symposia/series/symposium4/proceedings.html&qu…;
Advertised on:
2004
Citations
0
Refereed citations
0
Description
The Ca II triplet is one of the most frequently measured features for
deriving stellar metallicities from moderate resolution spectroscopy of
red giants in old and metal poor systems. With the advent of 8m class
telescopes, this indicator becomes of invaluable help in deriving
metallicities for large samples of faint stars in the Local Group, and
beyond. Its application to intermediate-age or young and/or metal rich
stellar populations, however, is still uncertain, due to the lack of
metal rich and intermediate-age calibrators and to the (still
unexplored) behavior of this indicator in conditions of varying [Ca/Fe]
ratios. In this poster we discuss the extension of the calibration of
the Ca II triplet to intermediate-age and young stellar populations and
to higher metallicity and present the preliminary results of observing
11 open clusters in December 2002. We also discuss the main objective of
this project: to use this revised calibration to estimate the chemical
enrichment of the Large Magellanic Cloud and its variation with position
in the Cloud.