The scale of homogeneity in the Las Campanas Redshift Survey

Citation
L. Amendola et E. Palladino, The scale of homogeneity in the Las Campanas Redshift Survey, ASTROPHYS J, 514(1), 1999, pp. L1-L4
Citations number
20
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
514
Issue
1
Year of publication
1999
Part
2
Pages
L1 - L4
Database
ISI
SICI code
0004-637X(19990320)514:1<L1:TSOHIT>2.0.ZU;2-T
Abstract
We analyze the Las Campanas Redshift Survey using the integrated conditiona l density (or density of neighbors) in volume-limited subsamples up to unpr ecedented scales (200 Mpc h(-1)) in order to determine without ambiguity th e behavior of the density field. We find that the survey is well described by a fractal up to 20-30 Mpc h(-1) but flattens toward homogeneity at large r scales. Although the data are still insufficient to establish with high s ignificance the expected homogeneous behavior, and therefore to rule out a fractal trend to larger scales, a fit with a cold dark matter-like spectrum with high normalization well represents the data.