Black Hole Growth and Feedback in Isolated ROMULUS25 Dwarf Galaxies
Black Hole Growth and Feedback in Isolated ROMULUS25 Dwarf Galaxies
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DOI：
10.3847/1538-4357/ab960e
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发表时间：
2019-12
期刊：
影响因子：
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通讯作者：
Ray S. Sharma;A. Brooks;R. Somerville;M. Tremmel;J. Bellovary;A. Wright;T. Quinn
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文献类型：
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作者：
Ray S. Sharma;A. Brooks;R. Somerville;M. Tremmel;J. Bellovary;A. Wright;T. Quinn
我们在Romulus 25宇宙流体动力学模拟中研究了大质量黑洞生长对矮星系结构演化的影响。我们研究了205个中心的样本，孤立的矮星系与恒星质量和中央BH。我们发现，本地MBH-M星星的关系表现出高度的散射低于M星星109 M更可能表现出较低的中心恒星质量密度，较低的氢气体含量，和较低的星星的形成率比他们的下质量BH同行。我们的研究结果表明，在M星星> 109 M质量以上的孤立星系中，超大质量黑洞能够驱动反馈，在许多情况下，抑制甚至淬灭星星的形成后期。
We investigate the effects of massive black hole growth on the structural evolution of dwarf galaxies within the Romulus25 cosmological hydrodynamical simulation. We study a sample of 205 central, isolated dwarf galaxies with stellar masses and a central BH. We find that the local MBH–Mstar relation exhibits a high degree of scatter below Mstar 109M⊙ are more likely to exhibit lower central stellar mass density, lower H i gas content, and lower star formation rates than their undermassive BH counterparts. Our results suggest that overmassive BHs in isolated galaxies above Mstar > 109M⊙ are capable of driving feedback, in many cases suppressing and even quenching star formation by late times.