Morphology of galaxies in compact groups
Morphology of galaxies in compact groups
复制标题
致密群星系的形态
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
J. Huchra
中科院分区：
文献类型：
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作者：
P. Hickson;E. Kindl;J. Huchra
报告了对 98 个致密星系群的均匀样本进行星系形态研究的结果。在所有星系中，49% 属于晚期形态类型（S + Irr），略低于场星系的相应比例。同样，仅对于排名第一的星系来说，48% 是晚型星系。在星系类型和星系环境之间发现了一些很强的相关性。同一组内的星系之间存在形态一致性。星系形态类型与群光学光度相关，星系形态与速度色散相关。发现后一种相关性是两者中更为基本的相关性。在这些致密星团中，形态类型与星系空间密度之间没有发现很强的相关性，这与丰富星团和松散星团的情况相反。这些结果表明，致密群中星系的形态类型受环境的影响很大，而且这种影响大多发生在星系形成时。 22 参考文献。
Results of a study of galaxy morphology in a homogeneous sample of 98 compact groups of galaxies are reported. Of all the galaxies, 49 percent are of late morphological type (S + Irr), somewhat less than the corresponding fraction for field galaxies. Similarly, for first-ranked galaxies only, 48 percent are late type. Several strong correlations are found between galaxy type and the galaxy environment. Morphological concordance occurs between galaxies within a group. Galaxy morphological type correlates with group optical luminosity, and galaxy morphology correlates with velocity dispersion. The latter correlation is found to be the more fundamental of the two. No strong correlation between morphological type and galaxy space density is found in these compact groups, contrary to the situation in rich clusters and loose groups. These results indicate that the morphological types of galaxies in compact groups are strongly influenced by the environment, and that this influence occurs mostly at the time of galaxy formation. 22 references.