On the detectability of strong lensing in near-infrared surveys
On the detectability of strong lensing in near-infrared surveys
复制标题
近红外巡天中强透镜效应的可探测性
DOI：
10.1093/mnras/stad2371
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发表时间：
2023
影响因子：
4.8
通讯作者：
Holloway P
中科院分区：
文献类型：
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作者：
Holloway P
我们提出了现有和即将进行的深近红外探测的新的透镜频率估计，包括JWST和Vista的探测。这些估计是基于JADES河外超深人工现实(Jaguar)星系目录，其中包括每个星系的完整光度和形态。由于捷豹模拟的范围有限，它们不太适合进行大范围的调查；然而，我们也对欧几里德和南希·格蕾丝·罗马太空望远镜进行的调查进行了外推。该方法不对镜片本身的性质做出假设，并探测广泛的镜片质量。镜片和光源选自同一目录，并将分析从可见光波段扩展到近红外。在生成逼真的模拟透镜光源并选择SNR>；20可检测的透镜后，我们验证了透镜频率预期与在可见光中选择的公布透镜样本的一致性，发现它们大体上是一致的。我们发现JWST可以在宇宙网络中产生∼65个透镜系统，其中∼25%的 %具有源红移。更深、更窄的计划(例如JADES-Medium)将探测更典型的源星系(在通量和质量上)，但将发现更少的系统(∼25)。在我们调查的调查中，我们发现55%-80%的 有可检测到的多次成像。即将到来的近红外探测可能会揭示新的和多样化的强透镜系统，包括比相应可见光探测中通常探测到的更高红移(JWST)、更尘埃、更大质量和更古老(EuclidNisp)的透镜源。
We present new lensing frequency estimates for existing and forthcoming deep near-infrared surveys, including those fromJWSTand VISTA. The estimates are based on the JAdes extragalactic Ultradeep Artificial Realisations (JAGUAR) galaxy catalogue accounting for the full photometry and morphologies for each galaxy. Due to the limited area of the JAGUAR simulations, they are less suited to wide-area surveys; however, we also present extrapolations to the surveys carried out byEuclidand theNancy Grace Roman Space Telescope. The methodology does not make assumptions about the nature of the lens itself and probes a wide range of lens masses. The lenses and sources are selected from the same catalogue and extend the analysis from the visible bands into the near-infrared. After generating realistic simulated lensed sources and selecting those that are detectable with SNR > 20, we verify the lensing frequency expectations against published lens samples selected in the visible, finding them to be broadly consistent. We find thatJWSTcould yield ∼65 lensed systems in COSMOS-Web, of which ∼25 per cent have source redshifts >4. Deeper, narrower programs (e.g. JADES-Medium) will probe more typical source galaxies (in flux and mass) but will find fewer systems (∼25). Of the surveys we investigate, we find 55–80 per cent have detectable multiple imaging. Forthcoming NIR surveys will likely reveal new and diverse strong lens systems including lensed sources that are at higher redshift (JWST) and dustier, more massive and older (EuclidNISP) than those typically detected in the corresponding visible surveys.