Color Gradients of External Galaxies

Details Color Gradients of External Galaxies Color Gradients of External Galaxies

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jkas...23...43k&link_type=abstract

The Journal of the Korean Astronomical Society, vol. 23, no. 1, p. 43-62

Astronomy and Astrophysics

Astronomy

6

Scientific paper

We present (U-B) and (U-V) radial color distributions of 103 galaxies based on the UBV multiaperture photometry compiled by Longo, de Vaucouleurs, and Corwin(1983). About half of the galaxies show radial negative color gradients (i. e., bluer at the outer parts of the galaxies). E and S0 galaxies have similar color gradients, and there appears to be no correlation between the size of color gradients in these galaxies and their luminosity, but the luminous spiral galaxies tend to have steeper color gradients. The metallicity gradients of elliptical galaxies derived from the (U-V) color gradients agree with those from the magnesium gradients within the errors

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