BINARY MERGING - THE OTHER MODE OF GALAXY EVOLUTION

被引：16

作者：

CAVALIERE, A

MENCI, N

机构：

[1] Astrofisica, Dipartimento di Fisica II, Università di Roma, I-00133 Roma

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 407卷 / 01期

关键词：

COSMOLOGY; THEORY; GALAXIES; EVOLUTION; FORMATION;

D O I：

10.1086/186793

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the mode of galaxy evolution based on merging after binary encounters, complementary to the mode based on direct hierarchical collapses. We show that the merging-driven mode produces, mainly by dynamical evolution, a local Schechter-like luminosity function starting at z approximately 2 from a steep mass distribution like Press & Schechter's. Such evolution inside galaxy systems provides a quantitative estimate of the Butcher-Oemler effect and yields an excess of faint blue galaxy counts like that observed.

引用

页码：L9 / L12

页数：4

共 33 条

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[2]

BLANCHARD A, 1992, ASTRON ASTROPHYS, V264, P365

[3] THE EVOLUTION OF GROUPS OF GALAXIES IN THE PRESS-SCHECHTER FORMALISM [J].