C-12(CO)(J=1-0) EMISSION FROM CIRCUMNUCLEAR REGIONS OF NORMAL S0 GALAXIES

被引：21

作者：

TANIGUCHI, Y

MURAYAMA, T

NAKAI, N

SUZUKI, M

KAMEYA, O

机构：

[1] NATL ASTRON OBSERV JAPAN,NOBEYAMA RADIO OBSERV,MINAMISA,NAGANO 38413,JAPAN

[2] NATL ASTRON OBSERV JAPAN,MIZUSAWA ASTROGEODYNAM OBSERV,MIZUSAWA 023,JAPAN

来源：

ASTRONOMICAL JOURNAL | 1994年 / 108卷 / 02期

关键词：

D O I：

10.1086/117084

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results of (CO)-C-12(J=1-0) emission-line measurements of 10 optically selected normal S0 galaxies which show little or no optical emission lines in their nuclear regions. The observations include the central 1 kpc diameter. We detected CO emission from six galaxies out of ten. The CO emission was newly detected from one galaxy NGC 7457. The molecular gas mass of the central 1 kpc region of the CO-detected SO galaxies ranges from 10(7) to 10(8). M.. The average surface density of molecular gas is 10(6-7) M. kpc-2. Comparing our results with those in literature, we discuss the spatial distribution of the molecular gas and the relationship between the molecular gas content and nuclear activity.

引用

页码：468 / 475

页数：8

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