Stellar populations in spiral galaxies

Lauren A. MacArthur, Jesús J. González, Stéphane Courteau

Research output: Contribution to journalArticlepeer-review


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 12 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.

Original languageEnglish (US)
Pages (from-to)480-484
Number of pages5
JournalProceedings of the International Astronomical Union
Issue numberS241
StatePublished - Dec 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Galaxies: abundances
  • Galaxies: formation
  • Galaxies: spiral


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