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Hi Absorption in GPS/CSS Sources

机译:GPS / CSS源中的高吸收

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摘要

Combining our own observations with data from the literature, we consider the incidence of HI absorption in gigahertz peaked spectrum (GPS) and compact steep spectrum (CSS) sources. Here we present our preliminary results, where we find that the smaller GPS sources (1 kpc). Both a spherical and an axi-symmetric gas distribution, with a radial power law density profile, can be used to explain this anti-correlation between projected linear size and HI column density. Since most detections occur in galaxy classified objects, we argue that if the unified schemes apply to the GPS/CSS sources, a disk distribution for the HI is more likely.
机译:将我们自己的观察结果与文献数据相结合,我们考虑了千兆赫兹峰值频谱(GPS)和紧凑陡峭频谱(CSS)源中的HI吸收率。在这里,我们介绍了我们的初步结果,我们发现较小的GPS源(1 kpc)。具有径向幂律密度分布的球形和轴对称气体分布均可用于解释投影线性尺寸和HI柱密度之间的这种反相关性。由于大多数检测发生在星系分类的物体中,因此我们认为,如果统一的方案适用于GPS / CSS源,则更可能为HI分配磁盘。

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