Galactic metallicity distribution from open clusters

Details Galactic metallicity distribution from open clusters Galactic metallicity distribution from open clusters

2003-10-15

arxiv.org/abs/astro-ph/0310395v1

Astron. J. 2003, 125, 1397

Astronomy and Astrophysics

Astrophysics

2 pages, conference proceeding IAU General Assembly 2003, Sydney, Symposium 217: Recycling Intergalactic and Interstellar Matt

Scientific paper

We have compiled two new Galactic open cluster catalogues. The first one has 119 objects with age, distance and metallicity data, while the second one has 144 objects with both absolute proper motion and radial velocity data, of which 45 clusters also with metallicity data available. An iron radial gradient of about $-0.063\pm$0.008 \dexkpc is obtained from our sample. By dividing clusters into age groups, we show that iron gradient was steeper in the past. A disk age-metallicity relation could very probably exist based on the current sample.

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