D. Son, J. Woo, Da-in Eun, Hojin Cho, M. Karouzos, S. Park
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引用次数: 0
摘要
为了研究中心源的真实性质及其与宿主星系恒星速度色散的比例关系,我们给出了10个隐藏型agn样本的空间分辨气体和恒星运动学。样本选择从大量的隐藏的1型AGN,确定基于广泛的存在组件\ ha \线配置文件(例如,半宽度> \ \ sim 1000美元美元公里),尽管他们常常mis-classified 2型AGN因为AGN连续和广泛的发射谱线都很弱或模糊光学光谱范围。我们使用6.5 m多镜望远镜(MMT)上的蓝色通道光谱仪获得长缝数据。我们只检测到两个目标的宽\hb\,然而,强宽\ha\的存在表明这些agn是低亮度的1型agn。我们测量了恒星连续体和气体发射线(即\hb\和\oiii)的速度、速度色散和通量与中心距离的函数关系,空间尺度为0.3弧秒像素$^{-1}$。由\hb\或\oiii\跟踪的空间分辨气体运动学通常与恒星运动学相似,除了非常中心,在那里可以检测到气体流出的特征。我们将亮度加权的有效恒星速度色散与黑洞质量进行了比较,发现这些隐藏的1型AGN具有相对较低的后孔质量,遵循了混响映射的1型AGN和更大质量的非活动星系的比例关系。}
Spatially Resolved Kinematics of gas and stars in hidden type 1 AGNs
We present the spatially resolved gas and stellar kinematics of a sample of ten hidden type 1 AGNs in order to investigate the true nature of the central source and the scaling relation with host galaxy stellar velocity dispersion. The sample is selected from a large number of hidden type 1 AGN, which are identified based on the presence of a broad component in the \ha\ line profile (i.e., full-width-at-half-maximum $>$ $\sim$1000 \kms), while they are often mis-classified as type 2 AGN because AGN continuum and broad emission lines are weak or obscured in the optical spectral range. We used the Blue Channel Spectrograph at the 6.5-m MMT (Multiple Mirror Telescope) to obtain long-slit data. We detected a broad \hb\ for only two targets, however, the presence of a strong broad \ha\ indicates that these AGNs are low-luminosity type 1 AGNs. We measured the velocity, velocity dispersion and flux of stellar continuum and gas emission lines (i.e., \hb\ and \oiii) as a function of distance from the center with a spatial scale of 0.3 arcsec pixel$^{-1}$. Spatially resolved gas kinematics traced by \hb\ or \oiii\ are generally similar to stellar kinematics except for the very center, where signatures of gas outflows are detected. We compare the luminosity-weighted effective stellar velocity dispersion with black hole mass, finding that these hidden type 1 AGN with relatively low back hole mass follow the scaling relation of the reverberation-mapped type 1 AGN and more massive inactive galaxies. }