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arXiv 0710.5503astro-ph
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作为活动星系核中黑洞质量和热光度指示器的高电离中红外线

High-ionization mid-infrared lines as black hole mass and bolometric luminosity indicators in active galactic nuclei

K. M. Dasyra, L. C. Ho, L. Armus, P. Ogle, G. Helou, B. M. Peterson, D. Lutz, H. Netzer, E. Sturm

摘要:

本文给出了28个反射映射的活动星系核的黑洞质量和光学光度与中红外线[Ne V]和[O IV]高电离线的速度色散和光度的关系。我们使用高分辨率的斯皮策红外光谱仪和红外空间天文台短波长光谱仪的数据来拟合这些MIR发射线的轮廓,这些发射线来自核的窄线区域。我们发现,线往往是解决和[Ne V]和[O IV]的速度色散遵循类似的关系之间的黑洞质量和球恒星的速度色散发现本地星系。在这些源中的[Ne V]和[O IV]线的亮度与光学5100 A连续谱和黑洞质量相关。我们的研究结果提供了一种手段,推导出各种类型的活动星系核,包括高度模糊的系统中的黑洞的属性。

英文摘要:

We present relations of the black hole mass and the optical luminosity with the velocity dispersion and the luminosity of the [Ne V] and the [O IV] high-ionization lines in the mid-infrared (MIR) for 28 reverberation-mapped active galactic nuclei. We used high-resolution Spitzer Infrared Spectrograph and Infrared Space Observatory Short Wavelength Spectrometer data to fit the profiles of these MIR emission lines that originate from the narrow-line region of the nucleus. We find that the lines are often resolved and that the velocity dispersion of [Ne V] and [O IV] follows a relation similar to that between the black hole mass and the bulge stellar velocity dispersion found for local galaxies. The luminosity of the [Ne V] and the [O IV] lines in these sources is correlated with that of the optical 5100A continuum and with the black hole mass. Our results provide a means to derive black hole properties in various types of active galactic nuclei, including highly obscured systems.

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