AAS 201st Meeting, January, 2003
Session 13. Galaxy - Structure
Poster, Monday, January 6, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[13.16] Thick and thin disk structural parameters in edge-on spiral galaxies

P. Yoachim, J. Dalcanton (University of Washington)

We analyze the global structure of 47 extremely late-type edge-on unwarped, bulgeless disk galaxies spanning a wide range of mass. The radial and vertical scale parameters for both thick and thin disks are obtained by two-dimensional least-squares fitting on our B, R, and Ks-band photometry. We find that the radial scale lengths of the thick disks are uncorrelated with that of the embedded thin disks. The total luminosity of the low-mass galaxies is dominated by the thick disk, while more massive galaxies' luminosities are thin disk dominated.

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Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.