论文标题
扩散离子气体对解释星系光谱的重要性
The importance of the diffuse ionized gas for interpreting galaxy spectra
论文作者
论文摘要
在星系中，星系中的膨胀离子气体（DIG）可以在星系中的晚期星系中，星系盘的组中以及此类磁盘平面外发现。挖掘的发射线光谱可以与弱活性银核的发射光谱混淆。它还可以使恒星形成星系中化学丰度和恒星形成速率的推论偏差。我们讨论如何检测和可行地纠正星系光谱中的挖掘贡献。
Diffuse ionized gas (DIG) in galaxies can be found in early-type galaxies, in bulges of late-type galaxies, in the interarm regions of galaxy disks, and outside the plane of such disks. The emission-line spectrum of the DIG can be confused with that of a weakly active galactic nucleus. It can also bias the inference of chemical abundances and star formation rates in star forming galaxies. We discuss how one can detect and feasibly correct for the DIG contribution in galaxy spectra.
