Hostname: page-component-848d4c4894-x5gtn Total loading time: 0 Render date: 2024-06-08T15:12:12.868Z Has data issue: false hasContentIssue false

Spectrum Scans of Globular Clusters in M87

Published online by Cambridge University Press:  14 August 2015

David A. Hanes
Affiliation:
Institute of Astronomy, University of Cambridge, Cambridge, U.K.
Jean F. Brodie
Affiliation:
Institute of Astronomy, University of Cambridge, Cambridge, U.K.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Spectrum scans at 10 A resolution have been obtained for four likely clusters in the field of the giant elliptical galaxy NGC 4486 (M87), using the IPCS at the 4-metre Anglo-Australian Telescope. A wavelength range of 3500–7000 A was covered, with the objects having brightnesses from V=19.5 to V=19.8 mag. Preliminary analysis suggests that one of these objects is comparable to the metal-richest known Galactic globular clusters, while the other three seem to be even more metal-rich. Alternative explanations, such as gross differences in the stellar mix within the M87 clusters compared to those in our own Galaxy, may account for the observed spectroscopic differences; quantitative analysis is just beginning.

Type
August 30 Globular Clusters
Copyright
Copyright © Reidel 1980