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arXiv 2406.02779astro-ph.GAastro-ph.COastro-ph.HE
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超大质量黑洞的$M_\bullet$-$M_\star$关系内禀弥散无显著红移演化

No Significant Redshift Evolution in the Intrinsic Scatter of the $M_\bullet$-$M_\star$ Relation for Overmassive Black Holes

Carl Audric Guia, Fabio Pacucci

AI总结:

本研究通过分析本地宇宙至$z>4$多个红移区间的观测数据,检验$M_\bullet$-$M_\star$关系的内禀弥散是否随红移演化,发现无统计显著的红移演化证据。

摘要:

在本地宇宙中,中心黑洞质量与其宿主星系恒星质量之比约为$0.1\\%$。近期,JWST发现了大量位于$z>4$的星系,它们似乎偏离了本地关系,其黑洞质量超出预期$10-100$倍。在宇宙正午时期也发现了类似的星系。该关系中的内禀弥散描述了单个星系的演化历史在多大程度上偏离其母数据集的平均演化模式。本研究简报通过评估不同红移范围内数据集的内禀弥散值,考察是否能探测到内禀弥散的宇宙学演化。利用来自本地宇宙($z < 0.055$)、低红移($0.4 \leq z \leq 0.9$)、中红移($0.9 \leq z \leq 4$)和高红移($z > 4$)的数据,我们得出结论:内禀弥散不存在统计上显著的红移演化。

英文摘要:

In the local Universe, the ratio between the mass of a central black hole and the stellar mass of its host galaxy is $\sim 0.1 \%$. Recently, JWST discovered numerous galaxies at $z>4$ that seem to deviate from the local relation, with black holes overmassive by $10-100$ times. Similar galaxies were also discovered at cosmic noon. The intrinsic scatter in the relation describes how much the evolutionary histories of the single galaxies deviate from the mean evolutionary pattern of their parent dataset. This Research Note examines whether a cosmic evolution of the intrinsic scatter can be detected by assessing its value for datasets in various redshift ranges. Using data from the local Universe ($z < 0.055$), low ($ 0.4 \leq z \leq 0.9$), intermediate ($ 0.9 \leq z \leq 4$), and high ($z > 4$) redshift, we conclude that there is no statistically significant redshift evolution of the intrinsic scatter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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