Lost but not forgotten: Intracluster light in galaxy groups and clusters
Lost but not forgotten: Intracluster light in galaxy groups and clusters
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DOI：
10.1093/mnras/stx2946
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发表时间：
2017-10
影响因子：
4.8
通讯作者：
T. DeMaio;Anthony H. Gonzalez;A. Zabludoff;D. Zaritsky;T. Connor;M. Donahue;J. Mulchaey
中科院分区：
文献类型：
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作者：
T. DeMaio;Anthony H. Gonzalez;A. Zabludoff;D. Zaritsky;T. Connor;M. Donahue;J. Mulchaey
利用哈勃太空望远镜成像，我们研究了23个星系团和星系团的星系团内光（ICL）的祖族和形成机制，范围从3$\times10^{13} 10^{11.6}$ M$_\odot$，而这种颜色在100 kpc上相当于10$^{10}$ M$_\odot$星系。此外，我们发现BCG+ICL总光度的75%与L$>$0.2 L$_*$ （log(M$_\bigstar$[M$_\odot$])$>$10.4）的星系颜色一致，保守地假设这些星系完全被破坏了。我们得出结论，大质量星系的潮汐剥离可能是星系团和星系团10-100 kpc （0.008-0.23 r$_{500,c}$）内光的来源。
With Hubble Space Telescope imaging, we investigate the progenitor population and formation mechanisms of the intracluster light (ICL) for 23 galaxy groups and clusters ranging from 3$\times10^{13} 10^{11.6}$ M$_\odot$), while by 100 kpc this colour is equivalent to that of a 10$^{10}$ M$_\odot$ galaxy. Additionally, we find 75% of the total BCG+ICL luminosity is consistent in color of galaxies with L$>$0.2 L$_*$ (log(M$_\bigstar$[M$_\odot$])$>$10.4), assuming conservatively that these galaxies are completely disrupted. We conclude that tidal stripping of massive galaxies is the likely source of the intracluster light from 10-100 kpc (0.008-0.23 r$_{500,c}$) for galaxy groups and clusters.