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The metallicity distribution of F/G dwarfs derived from BATC survey data

Cui-hua Du·Xu Zhou·Jun Ma·Jian-rong Shi·Alfred Bing-Chih Chen·Zhao-ji Jiang·Jian-sheng
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Abstract

Based on synthetic flux spectra calculated from theoretical atmospheric models, a calibration of temperature and metallicity for the dwarfs observed in the Beijing-Arizona-Taiwan-Connecticut (BATC) multicolor photometric system is presented in this paper. According to this calibration, stellar effective temperatures can be obtained from some temperature-sensitive color indices. The sample stars have colors and magnitudes in the ranges 0.1 5 kpc, it could not be interpreted according to the different contributions from the three components because of the large uncertainty. So it is possible that there is little or no gradient for z>5 kpc. The overall distribution shows a metallicity gradient d[Fe/H]/dz=-0.17+-0.04dex/kpc for z<15 kpc.

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Cui-hua Du, Xu Zhou, Jun Ma, Jian-rong Shi, Alfred Bing-Chih Chen, Zhao-ji Jiang, Jian-sheng. 2004-08-30. The metallicity distribution of F/G dwarfs derived from BATC survey data. https://doi.org/10.1086/424858

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