THE EXTERNAL ORIGIN OF THE GAS IN S0 GALAXIES

被引：119

作者：

BERTOLA, F

BUSON, LM

ZEILINGER, WW

机构：

[1] OSSERV ASTRON PADOVA,I-35122 PADUA,ITALY

[2] EUROPEAN SO OBSERV,W-8046 GARCHING,GERMANY

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 401卷 / 02期

关键词：

GALAXIES; ELLIPTICALS AND LENTICULAR; CD; INTERACTIONS; KINEMATICS AND DYNAMICS; STRUCTURE;

D O I：

10.1086/186675

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this Letter we present three new cases of S0 galaxies, namely NGC 2768, NGC 4379, and IC 4889, out of a sample of 15, in which the gas is counterrotating or strongly kinematically decoupled with respect to the stellar body of the galaxy. Assuming gas infall with randomly oriented angular momentum, this result implies that in 40% of the galaxies in our sample, the ionized gas is of external origin. However, several pieces of evidence suggest that the acquisition of external gas in S0 galaxies can be even more general.

引用

页码：L79 / L81

页数：3

共 34 条

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