ALFALFA半导体的分布
The Distribution of ALFALFA Galaxies
摘要：
ALCARFA盲HI调查将能够对本地宇宙中富含气体的星系的分布进行普查。在距离室女星系团10**7太阳质量的HI质量敏感，ALOFA将探测当地最小的物体，并提供近场宇宙学的新考虑。此外，由于具有更大的宇宙学意义的样本量和比以前的盲测更宽的带宽，每个质量箱中的检测数量可能要大得多，并且具有足够的角分辨率，从而消除了对大量后续观测的需要。这种增加的灵敏度将大大提高HI中宇宙学问题的实用性。ALCARFA最终将在一个大的局部体积中测量HI选定星系的关联函数。较大的样本量和体积大小的ALTAFA数据集也将稳健地测量HI质量函数（HIMF）。在这里，我们提出了初步的结果分布的本地富含气体的星系从第一个ALCARFA目录覆盖540度 **2。
英文摘要：
The ALFALFA blind HI survey will enable a census of the distribution of gas-rich galaxies in the local Universe. Sensitive to an HI mass of 10**7 solar masses at the distance of the Virgo cluster, ALFALFA will probe the smallest objects locally and provide a new consideration of near-field cosmology. Additionally, with a larger, cosmologically significant sample volume and wider bandwidth than previous blind surveys, a much larger number of detections in each mass bin is possible, with adequate angular resolution to eliminate the need for extensive follow-up observations. This increased sensitivity will greatly enhance the utility of cosmological probles in HI. ALFALFA will eventually measure the correlation function of HI selected galaxies in a large local volume. The larger sample and volume size of the ALFALFA dataset will also robustly measure the HI mass function (HIMF). Here, we present the preliminary results on the distribution of local gas-rich galaxies from a first ALFALFA catalog covering 540 deg**2.
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