Metal-rich dwarf galaxies from SDSS-DR4

We have identified a sample of 41 low-mass high-oxygen abundance outliers from the mass-metallicity relation of star-forming galaxies measured by Tremonti et al....我们从Tremonti等人所测定的恒星形成星系质量-金属丰度关系（mass-metallicity relation）数据集内，甄别出由41个低质量高氧丰度离群值构成的样本。