论文标题
$ m _ {\ rm bh}-σ_ {\ ast} $关系的低质量端
Populating the low-mass end of the $M_{\rm BH}-σ_{\ast}$ relation
论文作者
论文摘要
我们提出了使用Keck Echellete光谱仪和成像仪进行的高分辨率光谱，以测量八个活跃的矮星星系（$ M _ {\ ast} <3 \ 3 \ 3 \ times10^{9} {9} 〜M _ {\ odot} $）的恒星速度分散体（$ M _ {\ ast} <3 \ 3 \ 3 \ times10^{9} {\ odot} $）。我们将这种恒星质量制度的系统数量加倍，并测量黑洞质量（$ M _ {\ rm bh} $）和恒星速度分散（$σ_{\ ast} $），并将它们放在$ M _ {\ rm BH} -RM BH} -t _ _ _ { $ m _ {\ rm bh} $与$σ_{\ ast} $之间的紧密关系对于更高的质量星系是BHS共同发展及其宿主星系的有力证据，但是尚不清楚这种关系在矮人的Galaxy Incime中是否存在。我们的样本与$ M _ {\ rm bh} -temention j {\ ast} $与低BH/Galaxy Masses的关系非常吻合，这表明产生$ M _ {\ rm BH}的过程 - 这些结果为大规模的黑洞形成模型和模型提供了重要的限制，该模型探讨了AGN反馈在矮星系中的影响。
We present high resolution spectroscopy taken with the Keck Echellete Spectrograph and Imager to measure stellar velocity dispersions for eight active dwarf galaxies ($M_{\ast}<3\times10^{9}~M_{\odot}$) with virial black hole masses. We double the number of systems in this stellar mass regime with measurements of both black hole mass ($M_{\rm BH}$) and stellar velocity dispersion ($σ_{\ast}$), and place them on the $M_{\rm BH}-σ_{\ast}$ relation. The tight relation between $M_{\rm BH}$ and $σ_{\ast}$ for higher mass galaxies is a strong piece of evidence for the co-evolution of BHs and their host galaxies, but it has been unclear whether this relation holds in the dwarf galaxy regime. Our sample is in good agreement with the extrapolation of the $M_{\rm BH}-σ_{\ast}$ relation to low BH/galaxy masses, suggesting that the processes which produce $M_{\rm BH}-σ_{\ast}$ can also operate in dwarf galaxies. These results provide important constraints for massive black hole seed formation models and models exploring the impact of AGN feedback in dwarf galaxies.
