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- Title
- Spectroscopy of globular clusters in the Fornax dwarf galaxy
- Author(s)
- Strader, Jay; Brodie, Jean P.; Forbes, Duncan A.; Beasley, Michael A.; Huchra, John P.
- Abstract
- We present low-resolution, integrated Keck spectra of the five globular clusters (GCs) of the Fornax dwarf spheroidal galaxy. We find a tentative age spread among the clusters, with the GC H5 younger by 2-3 Gyr than the others. The clusters generally appear to be very metal-poor ([Fe/H]~-1.8), with the cluster H4 slightly more metal-rich at [Fe/H]=-1.5. We speculate that cluster H4 is similar to the Galactic GC Ruprecht 106, which lacks the [α/Fe] enhancement typical among metal-poor GCs in the Milky Way. High-resolution spectroscopy of individual cluster and field stars will be needed to sort out the surprisingly complex history of GC formation and evolution in this galaxy.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. School of Biophysical Science and Electrical Engineering. Centre for Astrophysics and Supercomputing
- Source
- Astronomical journal, Vol. 125, no. 3 (Mar. 2003), pp. 1291-1297
- Publication year
- 2003
- Publisher
- University of Chicago Press
- Format
- pp. 1291-1297
- ISSN
- 0004-6256
- Publisher URL
- Astronomical journal
- Publisher URL
- http://dx.doi.org/10.1086/367599
- Copyright
- © 2003 The American Astronomical Society. Reproduced in accordance with the copyright policy of the publisher.
- Full text
- Peer reviewed
