Hubble Space Telescope detection of spiral structure in two coma cluster dwarf galaxies

被引：68

作者：

Graham, AW

Jerjen, H

Guzmán, R

机构：

[1] Univ Florida, Dept Astron, Gainesville, FL 32611 USA

[2] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia

来源：

ASTRONOMICAL JOURNAL | 2003年 / 126卷 / 04期

关键词：

galaxies : dwarf; galaxies : elliptical and lenticular; cD; galaxies : formation; galaxies : individual (GMP 3292; GMP 3629); galaxies : spiral; galaxies : structure;

D O I：

10.1086/378166

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of spiral-like structure in Hubble Space Telescope images of two dwarf galaxies (GMP 3292 and GMP 3629) belonging to the Coma Cluster. GMP 3629 is the faintest such galaxy detected in a cluster environment, and it is the first such galaxy observed in the dense Coma Cluster. The large bulge and the faintness of the broad spiral-like pattern in GMP 3629 suggest that its disk may have been largely depleted. We may therefore have found an example of the "missing link" in theories of galaxy evolution that have predicted that dwarf spiral galaxies, particularly in clusters, evolve into dwarf elliptical galaxies.

引用

页码：1787 / 1793

页数：7

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