The kinematics of the planetary nebulae in the outer regions of NGC 4406

被引：130

作者：

Arnaboldi, M

Freeman, KC

Mendez, RH

Capaccioli, M

Ciardullo, R

Ford, H

Gerhard, O

Hui, X

Jacoby, GH

Kudritzki, RP

Quinn, PJ

机构：

[1] MUNICH UNIV OBSERV,D-81679 MUNICH,GERMANY

[2] OSSERV ASTRON CAPODIMONTE,I-80131 NAPLES,ITALY

[3] KITT PEAK NATL OBSERV,NATL OPT ASTRON OBSERV,TUCSON,AZ 85726

[4] JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218

[5] UNIV BASEL,INST ASTRON,CH-4102 BASEL,SWITZERLAND

[6] CALTECH,DEPT ASTRON,PASADENA,CA 91125

[7] EUROPEAN SO OBSERV,D-85748 GARCHING,GERMANY

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 472卷 / 01期

关键词：

galaxies; clusters; individual; (Virgo); (NGC; 4406); kinematics and dynamics; planetary nebulae; general;

D O I：

10.1086/178050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the velocities of 19 planetary nebulae (PNs) in the outer regions of the giant early-type galaxy NGC 4406 in the Virgo cluster. The kinematics of the outermost regions, at a mean radius of 142 '' or 11 kpc, show rapid rotation and a low observed velocity dispersion (similar to 166 and 96 km s(-1) respectively), compared with the central velocity dispersion of about 210 km s(-1). This supports the classification of this galaxy as an SO. Although this galaxy has a systemic velocity of -227 km s(-1), we found three PNs with velocities close to the mean velocity of the Virgo cluster (about 1400 km s(-1)). We argue that these three PNs may be members of an intracluster stellar population in the Virgo cluster.

引用

页码：145 / &

页数：9

共 36 条

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ARNABOLDI M, 1994, ESO MESSENGER, V76, P40

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