MICROLENSING CONSTRAINTS ON BROAD ABSORPTION AND EMISSION LINE FLOWS IN THE QUASAR H1413+117
MICROLENSING CONSTRAINTS ON BROAD ABSORPTION AND EMISSION LINE FLOWS IN THE QUASAR H1413+117
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DOI：
10.1088/0004-637x/813/1/62
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发表时间：
2015-04
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影响因子：
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通讯作者：
M. O’Dowd;N. Bate;R. Webster;K. Labrie;J. Rogers
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作者：
M. O’Dowd;N. Bate;R. Webster;K. Labrie;J. Rogers
我们提出了新的引力透镜宽吸收线（BAL）类星体H1413+117的积分场光谱，覆盖紫外剩余框架光谱范围。我们在透镜图像D中观察到强烈的微透镜特征，并且我们使用这种微透镜来同时约束宽发射线和宽吸收线气体。跨宽发射线（BELs）的图像D放大率的波长无关性指示宽发射线区域（BELR）大小的下限等于系统的爱因斯坦半径（ER）：透镜的红移为1.4和1.15（1.1M/ M）0.5？对于zL = 0.94，lt-day。透镜模拟验证，所观察到的波长的独立性是非常不可能的BELR与显着的速度分层的大小尺度低于ER。我们进行光谱分解，以获得本征BEL和连续光谱，受到BAL吸收。我们重建的内在BAL吸收剖面，其功能使我们能够约束外流运动学的背景下，盘风模型。我们在C iv和N v中都发现了一个非常尖锐的蓝移吸收起始点，为1500 km s−1，这可能对应于盘风径向流出的内边缘。较低的电离硅IV和铝III有较高的速度吸收开始，一致的半径在加速流出的电离参数减少。有证据表明，在BEL组件中的强吸收，这表明了一个高的覆盖系数的吸收超过两个数量级的流出半径。
We present new integral field spectroscopy of the gravitationally lensed broad absorption line (BAL) quasar H1413+117, covering the ultraviolet restframe spectral range. We observe strong microlensing signatures in lensed image D, and we use this microlensing to simultaneously constrain both the broad emission and broad absorption line gas. The wavelength independence of image D magnifications across the broad emission lines (BELs) indicates a lower limit on the broad emission line region (BELR) size equal to the Einstein radius (ER) of the system: ≳11 ( ⟨ M ⟩ / M ⊙ ) 0.5 ?> lt-day for a lens redshift of 1.4 and ≳15 ( ⟨ M ⟩ / M ⊙ ) 0.5 ?> lt-day for zL = 0.94. Lensing simulations verify that the observed wavelength independence is very unlikely for BELRs with significant velocity stratification at size scales below an ER. We perform spectral decomposition to derive the intrinsic BEL and continuum spectrum, subject to BAL absorption. We reconstruct the intrinsic BAL absorption profile, whose features allow us to constrain outflow kinematics in the context of a disk-wind model. We find a very sharp, blueshifted onset of absorption of 1500 km s−1 in both C iv and N v, which may correspond to an inner edge of a disk-wind’s radial outflow. The lower ionization Si iv and Al iii have higher-velocity absorption onsets, consistent with a decreasing ionization parameter with radius in an accelerating outflow. There is evidence of strong absorption in the BEL component, which indicates a high covering factor for absorption over two orders of magnitude in outflow radius.