We present measurements of the spectral properties for a total of 526,265 quasars, out of which 63% have a continuum signal-to-noise ratio > 3 pixel −1 , selected from the fourteenth data release of the Sloan Digital Sky Survey (SDSS-DR14) quasar catalog. We performed a careful and homogeneous analysis of the SDSS spectra of these sources to estimate the continuum and line properties of several emission lines such as H α , H β , H γ , Mg ii , C iii] , C iv , and Ly α . From the derived emission line parameters, we estimated single-epoch virial black hole masses ( M BH ) for the sample using H β , Mg ii , and C iv emission lines. The sample covers a wide range in bolometric luminosity ( ##IMG## [http://ej.iop.org/images/0067-0049/249/1/17/apjsab99c5ieqn1....] {$\mathrm{log}{L}_{\mathrm{bol}};$}

中文翻译：

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Sloan Digital Sky Survey Data Release 14中的类星体的光谱特性：目录

我们提供了总共526,265个类星体的光谱特性测量结果，其中63％的类星体的连续信噪比> 3像素-1，选自斯隆数字天空调查（SDSS-DR14） ）类星体目录。我们对这些来源的SDSS光谱进行了仔细而均匀的分析，以估算几种发射线（例如Hα，Hβ，Hγ，Mg ii，C iii]，C iv和Lyα）的连续谱和谱线特性。根据导出的发射谱线参数，我们使用Hβ，Mg ii和C iv发射谱线估计样品的单时期病毒性黑洞质量（M BH）。该示例涵盖了广泛的辐射热亮度（## IMG ## [http：//ej.iop.org/images/0067-0049/249/1/17/apjsab99c5ieqn1 ....] {$ \ mathrm {log } {L} _ {\ mathrm {bol}}; $}