Open Clusters and the Galactic Metallicity Distribution

Details Open Clusters and the Galactic Metallicity Distribution Open Clusters and the Galactic Metallicity Distribution

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..159c&link_type=abstract

"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me

Computer Science

1

Galaxy Evolution, Galaxy Formation, Open Clusters General

Scientific paper

We compiled an open cluster catalogue, having 119 objects with ages, distances and metallicities available. From this sample a Galactic disc iron radial gradient of about -0.063±0.008 dex kpc-1 was derived, which is quite consistent with the most recent determination of oxygen gradient from nebulae and young stars. By dividing clusters into age groups, we show that iron gradient was steeper in the past, which is consistent with the recent result from Galactic planetary nebulae data, and also consistent with inside-out galactic disc formation scenarios. Based on our clusters sample, no significant evidence was found for the existence of AMR in the Galactic disc.

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