MAPPING THE REAL-SPACE DISTRIBUTIONS OF GALAXIES IN SDSS DR7. I. TWO-POINT CORRELATION FUNCTIONS
MAPPING THE REAL-SPACE DISTRIBUTIONS OF GALAXIES IN SDSS DR7. I. TWO-POINT CORRELATION FUNCTIONS
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绘制 sdss dr7 中星系的真实空间分布图。
DOI:
10.3847/1538-4357/833/2/241
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发表时间:
2016-08
影响因子:
4.9
通讯作者:
Yang Lei
中科院分区:
文献类型:
--
作者:
Shi Feng;Yang Xiaohu;Wang Huiyuan;Zhang Youcai;Mo H. J.;Van den Bosch Frank C.;Li Shijie;Liu Chengze;Liu Yi;Tweed Dylan;Yang Lei
Using a method to correct redshift-space distortion (RSD) for individual galaxies, we mapped the real-space distributions of galaxies in the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7). We use an ensemble of mock catalogs to demonstrate the reliability of our method. Here, in the first paper in a series, we focus mainly on the two-point correlation function (2PCF) of galaxies. Overall the 2PCF measured in the reconstructed real space for galaxies brighter than agrees with the direct measurement to an accuracy better than the measurement error due to cosmic variance, if the reconstruction uses the correct cosmology. Applying the method to the SDSS DR7, we construct a real-space version of the main galaxy catalog, which contains 396,068 galaxies in the North Galactic Cap with redshifts in the range 0.01 ≤ z ≤ 0.12. The Sloan Great Wall, the largest known structure in the nearby universe, is not as dominant an overdense structure as it appears to be in redshift space. We measure the 2PCFs in reconstructed real space for galaxies of different luminosities and colors. All of them show clear deviations from single power-law forms, and reveal clear transitions from one-halo to two-halo terms. A comparison with the corresponding 2PCFs in redshift space nicely demonstrates how RSDs boost the clustering power on large scales (by about 40%–50% at scales ) and suppress it on small scales (by about 70%–80% on a scale of ).
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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
DOI:
10.1088/0004-637x/804/1/55
发表时间:
2015-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Yi Lu;Xiaohu Yang;S. Shen
通讯作者:
Yi Lu;Xiaohu Yang;S. Shen
DOI:
10.1086/305209
发表时间:
1997-07
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Y. Jing;Y. Jing;H. Mo;G. Börner
通讯作者:
Y. Jing;Y. Jing;H. Mo;G. Börner
DOI:
10.1086/591439
发表时间:
2008-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
J. Tinker;A. Kravtsov;A. Klypin;K. Abazajian;Michael S. Warren;G. Yepes;S. Gottlober;D. Holz
通讯作者:
J. Tinker;A. Kravtsov;A. Klypin;K. Abazajian;Michael S. Warren;G. Yepes;S. Gottlober;D. Holz