Stellar Populations in Spiral Galaxies
LA MacArthur, JJ Gonz�lez…�- Proceedings of the�…, 2006 - cambridge.org
LA MacArthur, JJ Gonz�lez, S Courteau
Proceedings of the International Astronomical Union, 2006•cambridge.orgWe 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/�> 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
& flux calibration), we are able constrain real signatures of age and metallicity gradients in�…
populations for 8 nearby spiral galaxies using Gemini/GMOS. The long-slit spectra extend
out to 1–2 disk scale lengths with S/N/�> 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
& flux calibration), we are able constrain real signatures of age and metallicity gradients in�…
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/�>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 & flux calibration), we are able constrain real signatures of age and metallicity gradients in star-forming galaxies.
Cambridge University Press