**title** Asp Conference Series, Vol. **volume**, **publication Year** **editors** the Contribution of Hi-rich Galaxies to the Damped Absorber Population at Z = 0
**title** Asp Conference Series, Vol. **volume**, **publication Year** **editors** the Contribution of Hi-rich Galaxies to the Damped Absorber Population at Z = 0
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**标题** Asp 会议系列，卷。
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
S. Schneider
中科院分区：
文献类型：
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作者：
J. Rosenberg;S. Schneider
我们提出了从盲发射在线调查中选择的局部宇宙中富含hi的星系的研究。这些星系代表了局部阻尼莱曼-α系统的发射线对应体。我们发现星系的HI横截面来自于M HI *以下的大范围星系质量，66%的面积来自于8.5 < Log M HI * < 9.7的星系。由于低质量星系的贡献，以及在任何给定的HI质量下星系类型和光度的范围，对HI横截面做出贡献的星系并不像通常所期望的那样完全是L *螺旋。这些星系的光学和近红外对应体涵盖了一系列类型（从螺旋星系到不规则星系）、光度（从L *到<0.01 L *）和表面亮度。该群体的光学和近红外性质范围以及运动学与低z阻尼Ly-α吸收体的性质一致。我们还表明，局部宇宙中富含hi的星系的数量并不排除低z阻尼吸收体种群的演化，但这与没有演化是一致的。
We present a study of HI-rich galaxies in the local universe selected from blind emission-line surveys. These galaxies represent the emission-line counterparts of local damped Lyman-α systems. We find that the HI cross-section of galaxies is drawn from a large range of galaxy masses below M HI * , 66% of the area comes from galaxies in the range 8.5 < Log M HI * < 9.7. Both because of the low mass galaxy contribution, and because of the range of galaxy types and luminosities at any given HI mass, the galaxies contributing to the HI cross-section are not exclusively L * spirals, as is often expected. The optical and near infrared counterparts of these galaxies cover a range of types (from spirals to irregulars), luminosities (from L * to <0.01 L *), and surface brightnesses. The range of optical and near infrared properties as well as the kinematics for this population are consistent with the properties for the low-z damped Ly-α absorbers. We also show that the number of HI-rich galaxies in the local universe does not preclude evolution of the low-z damped absorber population, but it is consistent with no evolution.