Metallicity distribution on the galactic disk

Details Metallicity distribution on the galactic disk Metallicity distribution on the galactic disk

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newa....8..737t&link_type=abstract

New Astronomy, Volume 8, Issue 8, p. 737-744.

Astronomy and Astrophysics

Astronomy

13

Open Clusters And Associations, Galaxy: Structure, Galaxy: Disk, Stars: Abundances, Hertzsprung-Russell Diagram, Stars: Evolution

Scientific paper

Depending mainly on UBVCCD data, the metallicities of 91 open star clusters nearby the galactic disk have been estimated using Cameron's [A&A 147 (1985b) 39] method. The metallicity radial gradient along the galactic plane is found to be -0.09 dex/kpc; which is in a very good agreement with Panagia and Tosi [A&A 96 (1981) 306] and Carraro et al. [MNRAS 296 (1998) 1045]. Vertically on the galactic disk, within about 800 pc, the metallicity gradient is found to be so trivial. An average age-metallicity relation has been examined, which confirms the previous suggestion that the metallicity of a cluster depending mainly on its position on the galactic disk more than its age.

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