A COMPLETE SOUTHERN SKY REDSHIFT SURVEY

被引:133
作者
DACOSTA, LN
GELLER, MJ
PELLEGRINI, PS
LATHAM, DW
FAIRALL, AP
MARZKE, RO
WILLMER, CNA
HUCHRA, JP
CALDERON, JH
RAMELLA, M
KURTZ, MJ
机构
[1] HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA
[2] UNIV CAPE TOWN, RONDEBOSCH 7700, SOUTH AFRICA
[3] UNIV CALIF SANTA CRUZ, SANTA CRUZ, CA 95064 USA
[4] OBSERV ASTRON, RA-5000 CORDOBA, ARGENTINA
关键词
COSMOLOGY; OBSERVATIONS; GALAXIES; CLUSTERING; DISTANCES AND REDSHIFTS; LUMINOSITY FUNCTION; MASS FUNCTION; LARGE-SCALE STRUCTURE OF UNIVERSE;
D O I
10.1086/187260
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discuss a magnitude-limited redshift survey covering a region around the south Galactic pole (SSRS2). The survey includes 3592 galaxies and covers a region of 1.13 sr to a limiting m(B(0)) = 15.5, directly comparable to CfA2. Together, CfA2 and SSR2 cover more than a third of the sky. The northern and southern surveys are remarkably similar. Both contain voids with diameters as large as 5000 km s-1. The southern survey contains the Southern Wall, similar to the northern Great Wall. The distributions of velocity dispersions for systems extracted from the SSRS2 and CfA2 surveys are also remarkably similar. For the SSRS2, an inhomogeneity-independent technique yields Schechter luminosity function parameters M* = -19.50 and alpha = -1.20 (H0 = 100 h km s-1 Mpc-1; h = 1 unless otherwise specified). The steep faintend slope is probably attributable to bluer galaxies. By examining the normalized density fluctuations in the SSRS2 and CfA2 surveys, we suggest that the combined sample is not yet large enough to be ''fair.'' There are large fluctuations in shells at 10,000 km s-1.
引用
收藏
页码:L1 / L4
页数:4
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