LoCuSS: A Herschel view of obscured star formation in Abell 1835
LoCuSS: A Herschel view of obscured star formation in Abell 1835
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LoCuSS：赫歇尔对阿贝尔 1835 年模糊恒星形成的看法
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Rex
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文献类型：
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作者：
M. Pereira;C. Haines;Graham P. Smith;E. Egami;S. Moran;A. Finoguenov;E. Hardegree;N. Okabe;T. Rawle;M. Rex
我们介绍了Herschel/PACS，MMT/Hectospec和XMM-牛顿对Abell 1835的观测，Abell 1835是天空中最亮的X射线星系团之一，也是强冷核的宿主。尽管Abell 1835具有典型的“松弛”X射线形态，在强透镜和弱透镜质量图中没有正在进行的合并活动的迹象，但它具有复杂的速度分布，这表明它仍然以较小卫星系统的形式积累大量质量。事实上，我们发现恒星形成的尘埃星系与光学选择的星系团群体之间存在着强烈的动力学隔离。大多数赫薛尔源都在星系团的维里半径附近被发现，几乎三分之一似乎嵌入了从西南方向提供给星系团的灯丝中。我们发现，最明亮的红外星系很可能参与了星系-星系的相互作用，这种相互作用可能触发了恒星形成的当前阶段。
We present Herschel/PACS, MMT/Hectospec and XMM-Newton observations of Abell 1835, one of the brightest X-ray clusters on the sky, and the host of a strong cool core. Even though Abell 1835 has a prototypically “relaxed” X-ray morphology and no signs of ongoing merger activity in strong- and weak-lensing mass maps, it has a complex velocity distribution, suggesting that it is still accreting significant amounts of mass in the form of smaller satellite systems. Indeed, we find strong dynamical segregation of starforming dusty galaxies from the optically selected cluster population. Most Herschel sources are found close to the virial radius of the cluster, and almost a third appear to be embedded within a filament feeding the cluster from the SW. We find that the most luminous infrared galaxies are likely involved in galaxy-galaxy interactions that may have triggered the current phase of star formation.