The structure, star formation history, and environments of galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We present results on the relationship between the environments, structure, and star-formation history of galaxies, using data from the Sloan Digital Sky Survey. Measures of the star-formation history, such as color and luminosity, are more closely related to environment than are measures of galaxy structure, such as galaxy concentration and surface brightness. In particular, galaxy concentration does not correlate with environment at fixed color and luminosity. These results suggest that the relationship between density and morphology may be secondary to the relationship between density and star formation history.

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