Using the Modified Nearest Neighbor Method to Correct Fiber-collision Effects on Galaxy Clustering
Using the Modified Nearest Neighbor Method to Correct Fiber-collision Effects on Galaxy Clustering
复制标题
使用改进的最近邻法校正光纤碰撞对星系团簇的影响
DOI：
10.3847/1538-4357/aafc22
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发表时间：
2018-09
影响因子：
4.9
通讯作者：
Han Jiaxin
中科院分区：
文献类型：
--
作者：
Yang Lei;Jing Yipeng;Yang Xiaohu;Han Jiaxin
光纤碰撞是现代光谱星系巡天面临的一个长期问题。在这项工作中，我们提出了一种新方法来校正这种不良影响，重点关注从光纤碰撞尺度向上的聚类。我们假设光纤 - 共（此处“fiber - co”似乎不完整）
Fiber collision is a persistent problem faced by modern spectroscopic galaxy surveys. In this work, we propose a new method to correct for this undesired effect, focusing on the clustering from the fiber-collision scale up to . We assume that the fiber-collided galaxies are in association with their nearest three angular neighbors. Compared with the conventional nearest-neighbor method, we have properly accounted for the foreground (background) galaxies that are associated with the foreground (background) cosmic webs relative to the nearest neighbor. We have tested the new method with mock catalogs of the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7). The test demonstrates that our new method can recover the projected two-point correlation functions at an accuracy better than 1% on small (below the fiber-collision scale) to intermediate (i.e., ) scales, where the fiber collision takes effect and the SDSS main sample can probe. The new method also gives a better recovery of the redshift-space correlation functions almost on all scales that we are interested in.
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影响因子：
4.8
作者：
J. C. Jackson
通讯作者：
J. C. Jackson
DOI：
10.1111/j.1365-2966.2004.07744.x
发表时间：
2003-03
影响因子：
4.8
作者：
Xiaohu Yang;Xiaohu Yang;H. Mo;H. Mo;Y. Jing;F. V. D. Bosch;Y. Chu
通讯作者：
Xiaohu Yang;Xiaohu Yang;H. Mo;H. Mo;Y. Jing;F. V. D. Bosch;Y. Chu
影响因子：
6.4
作者：
L. Pinol;R. Cahn;N. Hand;U. Seljak;M. White
通讯作者：
L. Pinol;R. Cahn;N. Hand;U. Seljak;M. White
DOI：
10.1086/591512
发表时间：
2008-03
期刊：
The Astrophysical Journal
影响因子：
--
作者：
N. Dalal;M. White;J. Bond;A. Shirokov
通讯作者：
N. Dalal;M. White;J. Bond;A. Shirokov
影响因子：
8.7
作者：
Bennett, C. L.;Larson, D.;Wright, E. L.
通讯作者：
Wright, E. L.