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arXiv 0812.4226astro-ph
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从测光红移测量中恢复实空间关联函数

Recovering the real-space correlation function from photometric redshift surveys

Pablo Arnalte-Mur, Alberto Fernández-Soto, Vicent J. Martínez, Enn Saar, Pekka Heinämäki, Ivan Suhhonenko

摘要:

在利用光度红移的大尺度成像巡天中,集群的测量取决于红移测定的不确定性。我们已经使用光锥模拟,以显示如何解投影方法成功地恢复真正的空间关联函数时,适用于模拟测光红移调查。我们研究了红移测量中的误差如何影响恢复的两点关联函数的质量。考虑到与计划的光度红移调查的预期误差,我们得出结论,这种方法提供了有用的宇宙学参数的估计,依赖于大尺度分布的星系的物质的聚类信息。

英文摘要:

Measurements of clustering in large-scale imaging surveys that make use of photometric redshifts depend on the uncertainties in the redshift determination. We have used light-cone simulations to show how the deprojection method successfully recovers the real space correlation function when applied to mock photometric redshift surveys. We study how the errors in the redshift determination affect the quality of the recovered two-point correlation function. Considering the expected errors associated to the planned photometric redshift surveys, we conclude that this method provides information on the clustering of matter useful for the estimation of cosmological parameters that depend on the large scale distribution of galaxies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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