The evolution of the size–mass relation at z = 1–3 derived from the complete Hubble Frontier Fields data set

The evolution of the size–mass relation at z = 1–3 derived from the complete Hubble Frontier Fields data set
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从完整的哈勃前沿场数据集导出的 z = 1−3 处的尺寸与质量关系的演变

DOI:
10.1093/mnras/staa3713
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发表时间:
2020
影响因子:
4.8
通讯作者:
Bradač, Maruša
Bradač, Maruša
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Yang, Lilan;Roberts-Borsani, Guido;Treu, Tommaso;Birrer, Simon;Morishita, Takahiro;Bradač, Maruša

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我们测量的大小质量关系和红移1 <z< 3之间的演变,使用六个前景哈勃前沿场星系团透镜星系。强引力透镜提供的能量使我们能够以比现有设施更高的角分辨率观察星系。我们选择一个恒星质量有限的样本,并将它们分为恒星形成或静态类的基础上,他们的休息帧UVJ的颜色从ASTRODEEP目录。源重建是用最近发布的透镜结构软件进行的,该软件是建立在多用途引力透镜软件透镜结构上的。我们导出了1 <z< 2.5和2.5 <z< 3的晚型星系的大小与质量的经验关系式,并发现在恒星质量一定的情况下,星系的大小演化为。内禀散射在< 1.5时<0.1 dex,但在更高的红移处增加到<0.3 dex。计算结果与空白区的计算结果吻合较好。我们评估的不确定性与选择的透镜模型通过比较使用五种不同的和公开可用的模型的尺寸测量,发现选择的透镜模型导致3.7%的不确定性的中值,和25%的分散为个别星系。我们的工作表明,使用强大的透镜放大率,以提高分辨率不会引入显着的不确定性,在这种工作,并铺平了道路,批发应用的复杂透镜重建技术,以更高的红移和更大的样本。
We measure the size–mass relation and its evolution between redshifts 1 <z< 3, using galaxies lensed by six foreground Hubble Frontier Fields clusters. The power afforded by strong gravitation lensing allows us to observe galaxies with higher angular resolution beyond current facilities. We select a stellar mass limited sample and divide them into star-forming or quiescent classes based on their rest-frame UVJ colours from the ASTRODEEP catalogues. Source reconstruction is carried out with the recently releasedlenstructionsoftware, which is built on the multipurpose gravitational lensing softwarelenstronomy. We derive the empirical relation between size and mass for the late-type galaxies withat 1 <z< 2.5 andat 2.5 <z< 3, and at a fixed stellar mass, we find galaxy sizes evolve as. The intrinsic scatter is <0.1 dex atz< 1.5 but increases to ∼0.3 dex at higher redshift. The results are in good agreement with those obtained in blank fields. We evaluate the uncertainties associated with the choice of lens model by comparing size measurements using five different and publicly available models, finding the choice of lens model leads to a 3.7 per cent uncertainty of the median value, and ∼25  per cent scatter for individual galaxies. Our work demonstrates the use of strong lensing magnification to boost resolution does not introduce significant uncertainties in this kind of work, and paves the way for wholesale applications of the sophisticated lens reconstruction technique to higher redshifts and larger samples.
哈勃太空望远镜结合强弱透镜分析碰撞样本:质量和放大率模型以及系统不确定性
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