Summary
We present the calculation of a set of 12 mid-ultraviolet (1900-3200 Å) spectroscopic indices for a sample of 15 galactic globular clusters (GGC) observed with the International Ultraviolet Explorer (IUE). We explore the dependence of the indices on age and metal abundance. We found that five indices (BL 2538, Fe II 2609, Mg II 2800, Mg I 2852 and Mg Wide) display a remarkably good correlation with [Fe/H]. With respect to age, only one index (BL 2740) shows a good correlation. Results from theoretical simple stellar populations well reproduce the global trends of indices vs. [Fe/H].
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© 2009 Springer-Verlag New York
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Morales-Hernández, J., Chávez, M., Bertone, E., Buzzoni, A., Bressan, A. (2009). UV Spectroscopic Indices of Galactic Globular Clusters. In: New Quests in Stellar Astrophysics II. Astrophysics and Space Science Proceedings. Springer, New York, NY. https://doi.org/10.1007/978-0-387-87621-4_25
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DOI: https://doi.org/10.1007/978-0-387-87621-4_25
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