The Stellar Populations of the Bars of Barred Spirals Through Evolutionary Synthesis: First Results |
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| Authors: | S Lourenso A Vazdekis RF Peletier JE Beckman |
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| Institution: | (1) Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain;(2) Institute of Astronomy, University of Tokyo, Tokyo, Japan;(3) Dept. Physics, University of Durham, South Road, Durham, DH1 3LE, UK |
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| Abstract: | As part of an ongoing project aimed at studying the age and metallicity gradients of the stellar populations along the bars
of a sample of barred spirals of different morphological types, we present our first results on NGC 4314 (SBa). We have obtained
optical and NIR colours and spectral indices along the bar and we interpret some of these results here and discuss their uncertainties
on the basis of single stellar population models. In a preliminary analysis, we constrain the limits for the age and metallicity
of the nucleus and two selected regions in the star formation ring of NGC 4314, characterizing both as metal rich (Z<Z
solar) stellar populations, and finding a difference in the mean luminosity-weighted age of at least ∼ 3–4 Gyr.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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