Hubble Frontier Field photometric catalogues of Abell 370 and RXC J2248.7−4431: multiwavelength photometry, photometric redshifts, and stellar properties
Hubble Frontier Field photometric catalogues of Abell 370 and RXC J2248.7−4431: multiwavelength photometry, photometric redshifts, and stellar properties
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Abell 370 和 RXC J2248.7−4431 的哈勃前沿场光度目录：多波长光度测量、光度红移和恒星特性
DOI：
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发表时间：
2019
影响因子：
4.8
通讯作者：
Xin Wang
中科院分区：
文献类型：
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作者：
M. Bradač;Kuang;A. Fontana;M. Castellano;E. Merlin;R. Amorín;A. Hoag;V. Strait;P. Santini;R. Ryan;S. Casertano;B. Lemaux;L. Lubin;K. Schmidt;T. Schrabback;T. Treu;A. von der Linden;C. Mason;Xin Wang
本文介绍了最后两个哈勃前沿场（HFF）的多波长光度星表，即大质量星系团阿贝尔370和RXC J2248.7−4431。测光范围从哈勃太空望远镜到地面甚大望远镜和斯皮策/红外阵列相机，与ASTRODEEP团队合作，并使用ASTRODEEP管道进行成像。虽然本文的主要目的是发布星表，但作为概念证明，我们也对使用dropout方法选择的z > 6天体进行了简要分析，以及光谱确认的来源和两个集群中的多个图像。虽然dropout方法产生了一个高z星系的样本，但添加较长波长的数据显示，正如预期的那样，样本在30%-45%的水平上受到较低红移的尘埃星系的大量污染。此外，我们表明，光谱红移仍然需要明确地确定红移的多重成像系统。最后，现在公开可用的ASTRODEEP星表被合并为所有的HFF，并用于探索在大光度红移范围内的20 000个星系的大样本的恒星性质。HFF星系团提供的强大放大率使得我们可以探索星系的性质，这些星系的内禀恒星质量低至M*<$107 M <$，在z > 6时的内禀星星形成率为0.1-1 M <$yr−1。
This paper presents multiwavelength photometric catalogues of the last two Hubble Frontier Fields (HFFs), the massive galaxy clusters Abell 370 and RXC J2248.7−4431. The photometry ranges from imaging performed on the Hubble Space Telescope to ground-based Very Large Telescope and Spitzer/Infrared Array Camera, in collaboration with the ASTRODEEP team, and using the ASTRODEEP pipeline. While the main purpose of this paper is to release the catalogues, we also perform, as a proof of concept, a brief analysis of z > 6 objects selected using dropout method, as well as spectroscopically confirmed sources and multiple images in both clusters. While dropout methods yield a sample of high-z galaxies, the addition of longer wavelength data reveals that as expected the samples have substantial contamination at the ∼30–45 per cent level by dusty galaxies at lower redshifts. Furthermore, we show that spectroscopic redshifts are still required to unambiguously determine redshifts of multiply imaged systems. Finally, the now publicly available ASTRODEEP catalogues were combined for all HFFs and used to explore stellar properties of a large sample of 20 000 galaxies across a large photometric redshift range. The powerful magnification provided by the HFF clusters allows for an exploration of the properties of galaxies with intrinsic stellar masses as low as M* ≳ 107 M⊙ and intrinsic star formation rates ∼0.1–1 M⊙ yr−1 at z > 6.
DOI：
10.1088/0067-0049/199/2/25
发表时间：
2011-06
期刊：
The Astrophysical Journal Supplement Series
影响因子：
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作者：
M. Postman;D. Coe;N. Benı́tez;L. Bradley;T. Broadhurst;M. Donahue;H. Ford;O. Graur;G. Graves-G.-G
通讯作者：
M. Postman;D. Coe;N. Benı́tez;L. Bradley;T. Broadhurst;M. Donahue;H. Ford;O. Graur;G. Graves-G.-G
影响因子：
8.7
作者：
Komatsu, E.;Smith, K. M.;Wright, E. L.
通讯作者：
Wright, E. L.
Abell 370 的质量和光：强透镜和弱透镜分析
DOI：
10.3847/1538-4357/aae834
发表时间：
2018
期刊：
The Astrophysical Journal
影响因子：
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作者：
Strait, V.;Bradač, M.;Hoag, A.;Huang, K.-H.;Treu, T.;Wang, X.;Amorin, R.;Castellano, M.;Fontana, A.;Lemaux, B.-C.
通讯作者：
Lemaux, B.-C.