Star Formation and the Growth of Stellar Mass
Star Formation and the Growth of Stellar Mass
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DOI：
10.1086/518594
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发表时间：
2007-04
期刊：
影响因子：
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通讯作者：
Eric F. Bell;Xianzhong Zheng;C. Papovich;A. Borch;Christian Wolf;K. Meisenheimer
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文献类型：
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作者：
Eric F. Bell;Xianzhong Zheng;C. Papovich;A. Borch;Christian Wolf;K. Meisenheimer
最近的观测显示，自从z = 1以来，红色序列的整体恒星质量显著增长，主要是恒星质量为M* 3 × 1010 M☉的星系数量稳步增加，蓝色星系也会过度生产；也就是说，大多数在蓝云星系中形成的新恒星都在大质量星系中。我们探索了一个简单的截断场景，在这个场景中，这些“额外的”蓝色星系的恒星形成受到一个或多个未指明的机制的抑制；在这些额外的蓝色星系中，恒星形成的简单停止大约足以建立M* > 1011 M☉的红色序列。
Recent observations have demonstrated a significant growth in the integrated stellar mass of the red sequence since z = 1, dominated by a steadily increasing number of galaxies with stellar masses M* 3 × 1010 M☉ blue galaxies would also be overproduced; i.e., most of the new stars formed in blue cloud galaxies are in the massive galaxies. We explore a simple truncation scenario in which these "extra" blue galaxies have their star formation suppressed by an unspecified mechanism or mechanisms; simple cessation of star formation in these extra blue galaxies is approximately sufficient to build up the red sequence at M* ≲ 1011 M☉.