A MERGER SCENARIO FOR NGC-7252 - A TALE OF 2 TAILS

被引：40

作者：

BORNE, KD ^{[1
]}

RICHSTONE, DO ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT ASTRON,ANN ARBOR,MI 48109

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 369卷 / 01期

关键词：

GALAXIES; INDIVIDUAL; (NGC-7252); INTERACTIONS; INTERNAL MOTIONS; STRUCTURE;

D O I：

10.1086/169742

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Schweizer has proposed that NGC 7252 (Arp 226) recently formed from the merger of two disk galaxies and will ultimately relax into an elliptical galaxy. We have successfully simulated the suspected collision event with a gravitational interaction code, thereby reinforcing the merger hypothesis for the origin of this object. A careful selection of the disk and orbital model parameters lead to a good match to the present appearance and dynamics of this galaxy. Our best simulation relaxes into an object which morphologically and kinematically resembles a normal elliptical galaxy.

引用

页码：111 / 120

页数：10

共 19 条

[1] INTERACTING BINARY GALAXIES .6. THE FAST ENCOUNTER OF NGC-2672 AND NGC-2673 (KARACHENTSEV 175, ARP-167) [J].