THE LUMINOSITY FUNCTION OF GALAXIES IN COMPACT-GROUPS

被引：21

作者：

RIBEIRO, ALB

DECARVALHO, RR

ZEPF, SE

机构：

[1] USP,INST ASTRONOMICO & GEOFIS,BR-04301904 SAO PAULO,BRAZIL

[2] UNIV DURHAM,DEPT PHYS,DURHAM DH1 3LE,ENGLAND

[3] UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1994年 / 267卷 / 02期

关键词：

GALAXIES; CLUSTERING; LUMINOSITY FUNCTION; MASS FUNCTION;

D O I：

10.1093/mnras/267.1.L13

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use counts of faint galaxies in the regions of compact groups to extend the study of the luminosity function of galaxies in compact groups to absolute magnitudes as faint as M(B) = - 14.5 + 5 log h. We find a slope of the faint end of the luminosity function of approximately alpha = - 0.8, with a formal uncertainty of 0.15. This slope is not significantly different from that found for galaxies in other environments. Our results do not support previous suggestions of a dramatic underabundance of intrinsically faint galaxies in compact groups, which were based on extrapolations from fits at brighter magnitudes. The normal faint-end slope of the luminosity function in compact groups is in agreement with previous evidence that most galaxies in compact groups have not been dramatically affected by recent merging.

引用

页码：L13 / L16

页数：4

共 12 条

[1]

BINGGELI B, 1988, ANNU REV ASTRON ASTR, V26, P509

[2]

DECARVALHO RR, 1994, IN PRESS APJS

[3]

DEOLIVEIRA CM, 1991, ASTROPHYS J, V380, P30, DOI 10.1086/170559

[4] POPULATION STUDIES IN GROUPS AND CLUSTERS OF GALAXIES .4. COMPARISON OF THE LUMINOSITY FUNCTIONS AND MORPHOLOGICAL-TYPE DISTRIBUTIONS IN 7 NEARBY GROUPS [J].