Imaging of the shell galaxies NGC 474 and 7600, and implications for their formation

被引：43

作者：

Turnbull, AJ

Bridges, TJ

Carter, D

机构：

[1] Univ Hertfordshire, Dept Phys Sci, Hatfield AL10 9AB, Herts, England

[2] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[3] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead L41 1LD, Merseyside, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 307卷 / 04期

关键词：

galaxies : evolution; galaxies : individual : NGC 474; galaxies : individual : NGC 7600; galaxies : interactions; galaxies : photometry;

D O I：

10.1046/j.1365-8711.1999.02724.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present photometric observations of two shell galaxies, NGC 474 and 7600. We examine the photometric colours and surface brightnesses of the shells and their host galaxies, and the isophotal parameters of each galaxy. In the case of NGC 474, we find that the shell formation is consistent with a merger origin, although it is possible that the close companion NGC 470 is contributing to the shell system via mass transfer. NGC 7600 exhibits shell geometry and colours which also favour a merger origin.

引用

页码：967 / 976

页数：10

共 51 条

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