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arXiv 0804.0773astro-ph
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盘星系旋臂形态与超大质量黑洞质量关系的发现

Discovery of a relationship between spiral arm morphology and supermassive black hole mass in disk galaxies

Marc S. Seigar, Daniel Kennefick, Julia Kennefick, Claud H. S. Lacy

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Accepted for publication in ApJ Letters
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摘要：

本文给出了盘状星系核中超大质量黑洞的旋臂螺距角（螺旋结构紧密性的度量）与质量之间的关系。我们认为，这种关系是通过其他关系的组合，其存在已经被证明。最近在无球盘星系中发现的活动星系核表明，晕浓度或维里质量可能是决定BH质量的因素之一。两者结合的结果，质量浓度似乎决定旋臂俯仰角，人们会期望存在的关系，在盘星系的旋臂俯仰角和超大质量BH质量，我们发现，这确实是这样的。我们的结论是，这种关系可能是重要的估计在BH质量的演化盘星系的中间红移，因为规则的螺旋臂结构可以看到在星系的z~1。

英文摘要：

We present a relationship between spiral arm pitch angle (a measure of the tightness of spiral structure) and the mass of supermassive black holes (BHs) in the nuclei of disk galaxies. We argue that this relationship is expected through a combination of other relationships, whose existence has already been demonstrated. The recent discovery of AGN in bulgeless disk galaxies suggests that halo concentration or virial mass may be one of the determining factors in BH mass. Taken together with the result that mass concentration seems to determine spiral arm pitch angle, one would expect a relation to exist between spiral arm pitch angle and supermassive BH mass in disk galaxies, and we find that this is indeed the case. We conclude that this relationship may be important for estimating evolution in BH masses in disk galaxies out to intermediate redshifts, since regular spiral arm structure can be seen in galaxies out to z~1.

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