Stellar Populations in Spiral Galaxies
Astrophysics
2009-11-13 v1
Abstract
We report preliminary results of the characterization of bulge and inner disk stellar populations for 8 nearby spiral galaxies using Gemini/GMOS. The long-slit spectra extend out to 1-2 disk scale lengths with S/N/Ang > 50. Two different model fitting techniques, absorption-line indices and full spectral synthesis, are found to weigh age, metallicity, and abundance ratios differently, but with careful attention to the data/model matching (resolution and flux calibration), we are able constrain real signatures of age and metallicity gradients in star-forming galaxies.
Cite
@article{arxiv.astro-ph/0701881,
title = {Stellar Populations in Spiral Galaxies},
author = {Lauren A. MacArthur and Jesus Gonzalez and Stephane Courteau},
journal= {arXiv preprint arXiv:astro-ph/0701881},
year = {2009}
}
Comments
4 pages, 3 figures. To appear in the proceedings for IAUS 241 "Stellar Populations as Building Blocks of Galaxies", Eds. R.F. Peletier and A. Vazdekis