Metallicity profile of M31 HII regions and PNe
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The oxygen abundance gradients among nebular emission line regions in spiral galaxies have been used as important constraints for models of chemical evolution. We present the...
旋涡星系(spiral galaxies)内星云发射线区域(nebular emission line regions)间的氧丰度梯度(oxygen abundance gradients),已被用作化学演化(chemical evolution)模型的重要约束条件。我们将呈现……



