AAS Meeting #193 - Austin, Texas, January 1999
Session 8. Galactic Morphology and Stellar Populations
Display, Wednesday, January 6, 1999, 9:20am-6:30pm, Exhibit Hall 1

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[8.08] Investigating the Stellar Populations of Disk Galaxies with Optical and Near-IR Photometry

S. Bergmann, P. M. Marcum (Texas Christian U.), M. N. Fanelli (U. North Texas)

We investigate the relative stellar populations of ~ 20 nearby field spiral galaxies by use of optical (UBV) and near-infrared (JHK) imaging. Preliminary work using the RC3 and Longo et al (1988) shows a correlation in H-band surface brightness with morphology, which motivates this study. Near-infrared imaging has been taken to confirm this trend. Bulge/disk decompositions are used in order to compare multiwavelength photometry of both bulge and disk components to stellar evolutionary models. This will determine relative ages of these components as a function of morphological type.

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