Modelling type 1 quasar colours in the era of Rubin and Euclid
Modelling type 1 quasar colours in the era of Rubin and Euclid
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鲁宾和欧几里得时代的 1 类类星体颜色建模
DOI：
10.1093/mnras/stab2586
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发表时间：
2021
影响因子：
4.8
通讯作者：
Temple M
中科院分区：
文献类型：
--
作者：
Temple M
我们构建了一个参数化的SED模型，它能够在很宽的红移范围（0 <z< 5）和光度范围（−22 >Mi> −29）内再现观测到的SDSS-UKIDSS-WISEquasar平均颜色，其幅度在十分之一以内。这个模型被证明是提供准确的预测的颜色的已知的类星体是不太明亮的比那些用来校准模型参数，也是那些在较高的红移z> 5。使用一个单一的参数，该模型封装了一个最新的理解内的种群方差的休息帧紫外线和光发射线的发光类星体。在固定的红移，有系统的变化，类星体的平均颜色与视带的幅度，我们发现这是很好地解释了从宿主星系的贡献和我们的参数化的发射线属性。通过将红移作为一个额外的自由参数，该模型可以用来提供单个物体的光度红移。对于总体来说，我们发现平均发射线和主星系的贡献可以很好地用简单的光度函数来描述，这可以解释在18.1 <iAB< 21.5范围内观察到的平均类星体颜色的变化。我们使用这些趋势提供预测类星体的颜色在光度和红移，这将是由鲁宾天文台LSST和欧空局-欧几里德调查探测。模型代码适用于范围广泛的即将到来的光度和光谱调查，并公开提供。
We construct a parametric SED model which is able to reproduce the average observed SDSS–UKIDSS–WISEquasar colours to within one-tenth of a magnitude across a wide range of redshift (0 <z< 5) and luminosity (−22 >Mi> −29). This model is shown to provide accurate predictions for the colours of known quasars which are less luminous than those used to calibrate the model parameters, and also those at higher redshiftsz> 5. Using a single parameter, the model encapsulates an up-to-date understanding of the intra-population variance in the rest-frame ultraviolet and optical emission lines of luminous quasars. At fixed redshift, there are systematic changes in the average quasar colours with apparenti-band magnitude, which we find to be well explained by the contribution from the host galaxy and our parametrization of the emission-line properties. By including redshift as an additional free parameter, the model could be used to provide photometric redshifts for individual objects. For the population as a whole we find that the average emission line and host-galaxy contributions can be well described by simple functions of luminosity which account for the observed changes in the average quasar colours across 18.1 <iAB< 21.5. We use these trends to provide predictions for quasar colours at the luminosities and redshifts which will be probed by the Rubin Observatory LSST and ESA-Euclidwide survey. The model code is applicable to a wide range of upcoming photometric and spectroscopic surveys, and is made publicly available.
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发表时间：
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影响因子：
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发表时间：
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10.1111/j.1365-2966.2012.21427.x
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DOI：
--
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