Solar neighbourhood metallicity distribution (Haywood+, 2001)

Details Solar neighbourhood metallicity distribution (Haywood+, 2001) Solar neighbourhood metallicity distribution (Haywood+, 2001)

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..73251365h&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/325/1365. Originally published in: 2001MNRAS.325.1365H

Physics

Stars: Dwarfs, Abundances: [Fe/H], Photometry: Ubv

Scientific paper

We present a revised metallicity distribution of dwarfs in the solar neighbourhood. This distribution is centered on solar metallicity. We show that previous metallicity distributions, selected on the basis of spectral type, are biased against stars with solar metallicity or higher. A selection of G-dwarf stars is inherently biased against metal-rich stars and is not representative of the solar neighbourhood metallicity distribution. Using a sample selected on colour, we obtain a distribution where approximately half the stars in the solar neighbourhood have metallicities higher than [Fe/H]=0. The percentage of mid-metal-poor stars ([Fe/H}<-0.5) is approximately 4 per cent, in agreement with the present estimates of the thick disc. (1 data file).

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