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Title:
Keck spectroscopy of globular clusters in the spiral galaxy NGC 2683
Authors:
Proctor, Robert N.; Forbes, Duncan A.; Brodie, Jean P.; Strader, Jay
Affiliation:
AA(Centre for Astrophysics & Supercomputing, Swinburne University, Hawthorn, VIC 3122, Australia), AB(Centre for Astrophysics & Supercomputing, Swinburne University, Hawthorn, VIC 3122, Australia), AC(Lick Observatory, University of California, Santa Cruz, CA 95064, USA), AD(Lick Observatory, University of California, Santa Cruz, CA 95064, USA)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 385, Issue 4, pp. 1709-1717. (MNRAS Homepage)
Publication Date:
04/2008
Origin:
MNRAS
Astronomy Keywords:
globular clusters: general , galaxies: individual: NGC 2683 , galaxies: star clusters
DOI:
10.1111/j.1365-2966.2008.12867.x
Bibliographic Code:
2008MNRAS.385.1709P

Abstract

We analyse Keck spectra of 24 candidate globular clusters (GCs) associated with the spiral galaxy NGC 2683. We identify 19 bona fide GCs based on their recession velocities, of which 15 were suitable for stellar population analysis. Age and metallicity determinations reveal old ages in 14 out of 15 GCs. These old GCs exhibit age and metallicity distributions similar to that of the Milky Way GC system. One GC in NGC 2683 was found to exhibit an age of ~3 Gyr. The age, metallicity and alpha-element abundance of this centrally located GC are remarkably similar to the values found for the Galactic Centre itself, providing further evidence for a recent star formation event in NGC 2683.

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