COSMOGRAPHY OF THE LOCAL UNIVERSE

被引:103
作者
Courtois, Helene M. [1 ,2 ]
Pomarede, Daniel [3 ]
Tully, R. Brent [2 ]
Hoffman, Yehuda [4 ]
Courtois, Denis [5 ]
机构
[1] Univ Lyon, UCB Lyon 1, CNRS, IN2P3,IPN Lyon, Lyon, France
[2] Univ Hawaii, Inst Astron IFA, Honolulu, HI 96822 USA
[3] CEA IRFU, F-91191 Gif Sur Yvette, France
[4] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
[5] Lycee Int, F-38300 Nivolas Vermelle, France
基金
美国国家航空航天局; 以色列科学基金会; 美国国家科学基金会;
关键词
atlases; galaxies: distances and redshifts; large-scale structure of universe; WIENER RECONSTRUCTION; REDSHIFT SURVEY; DWARF GALAXIES; SCALE; VELOCITY; CALIBRATION; DISTANCES; CATALOG; CLUSTER; MOTION;
D O I
10.1088/0004-6256/146/3/69
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The large-scale structure of the universe is a complex web of clusters, filaments, and voids. Its properties are informed by galaxy redshift surveys and measurements of peculiar velocities. Wiener filter reconstructions recover three-dimensional velocity and total density fields. The richness of the elements of our neighborhood is revealed with sophisticated visualization tools. A key component of this paper is an accompanying movie which can be viewed and downloaded at http://vimeo.com/pomarede/cosmography. The ability to translate and zoom helps the viewer follow structures in three dimensions and grasp the relationships between features on different scales while retaining a sense of orientation. The ability to dissolve between scenes provides a technique for comparing different information such as the observed distribution of galaxies, smoothed representations of the distribution accounting for selection effects, observed peculiar velocities, smoothed and modeled representations of those velocities, and inferred underlying density fields. The agreement between the large-scale structure seen in redshift surveys and that inferred from reconstructions based on the radial peculiar velocities of galaxies strongly supports the standard model of cosmology where structure forms from gravitational instabilities and galaxies form at the bottom of potential wells.
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页数:14
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