Large-scale galaxy distribution in the Las Campanas Redshift Survey
نویسندگان
چکیده
منابع مشابه
The scale of homogeneity in the Las Campanas Redshift Survey
We analyse the Las Campanas Redshift Survey using the integrated conditional density (or density of neighbors) in volume-limited subsamples up to unprecedented scales (200 Mpc/h) in order to determine without ambiguity the behavior of the density field. We find that the survey is well described by a fractal up to 20-30 Mpc/h, but flattens toward homogeneity at larger scales. Although the data a...
متن کاملThe Galaxy-weighted Small-scale Velocity Dispersion of the Las Campanas Redshift Survey
The pair-weighted relative velocity dispersion of galaxies provides a measure of the thermal energy of fluctuations of the observed galaxy distribution, but the measure is difficult to interpret and is very sensitive to the existence of rare, rich clusters of galaxies. Several alternative statistical procedures have recently been suggested to relieve these problems. We apply a variant of the ob...
متن کاملTopology of the Las Campanas Redshift Survey
The topology of the Las Campanas Redshift Survey is analyzed using Minkowski functional statistics, taking into account the selection effects of the survey. The results are compared with the predictions of some toy models of structure formation, including the Standard Cold Dark Matter Model and topological defect-based models. All of the toy models have a scale invariant primordial spectrum of ...
متن کاملLarge Scale Structures in the Las Campanas Redshift Survey and in Simulations
The large supercluster structures obvious in recent galaxy redshift surveys are quantified using an one-dimensional cluster analysis (core sampling) and a three-dimensional cluster analysis based on the minimal spanning tree. The comparison with the LCRS reveals promising stable results. At a mean overdensity of about ten, the supercluster systems form huge wall-like structures comprising about...
متن کاملThe Galaxy-galaxy Autocorrelation Function for the Las Campanas Redshift Survey
The Las Campanas Redshift Survey (LCRS) is a galaxy survey which extends to a red-shift of 0.2 and which is composed of a total of 6 alternating 1:5 80 Slices in the North and South Galactic Caps. Now in its nal stages, the Survey contains approximately 26,400 galaxy redshifts. We present here a deenitive LCRS galaxy-galaxy autocorrela-tion function gg (s), its comparison to the gg (s) from var...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2001
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2001.04121.x