The metallicity gradient of the M 31 globular cluster system

Astronomy and Astrophysics – Astronomy

Scientific paper

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Andromeda Galaxy, Astronomical Spectroscopy, Globular Clusters, Metallicity, Red Giant Stars, Chemical Evolution, Luminosity, Milky Way Galaxy, Spectral Energy Distribution

Scientific paper

The question of the correlation between metallicity and positions of globular clusters in M31 is studied. The distribution of line-strength indices L by van den Bergh and colors (V-K)0, as metallicity indicators, as a function of projected galactocentric distances confirms the existence of the radial metallicity gradient in the M31 globular cluster system and indicates to a similarity of chemical evolution in M31 and our Galaxy.

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