共 31 条
[31]
ZUCCA F, 1997, A A, V326, P477
The local space density of dwarf galaxies
被引：51
作者：
Loveday, J
机构：
[1] Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637
关键词：
cosmology;
observations;
galaxies;
distances and redshifts;
evolution;
luminosity function;
mass function;
surveys;
D O I：
10.1086/304778
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We estimate the luminosity function of field galaxies over a range of 10 mag (-22 < M-BJ < -12 for H-0 = 100 km s(-1) Mpc(-1)) by counting the number of faint APM galaxies around Stromlo-APM redshift survey galaxies at known distance. The faint end of the luminosity function rises steeply at M-BJ approximate to -15, implying that the space density of dwarf galaxies is at least 2 times larger than predicted by a Schechter function with flat faint-end slope. Such a high abundance of dwarf galaxies at low redshift can help explain the observed number counts and redshift distributions of faint galaxies without invoking exotic models for galaxy evolution.
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页码：29 / 36
页数：8
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