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Stellar Populations in Spiral Galaxies

Lauren A. MacArthur·Jesus Gonzalez·Stephane Courteau
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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.

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Lauren A. MacArthur, Jesus Gonzalez, Stephane Courteau. 2007-01-30. Stellar Populations in Spiral Galaxies. https://doi.org/10.1017/s1743921307008824

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