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The Sizes of z ∼ 9−10 Galaxies Identified in the Brightest of Reionizing Galaxies (BoRG) Survey
The Astronomical Journal ( IF 5.1 ) Pub Date : 2020-09-03 , DOI: 10.3847/1538-3881/aba617
Benne W. Holwerda 1 , Joanna S. Bridge 1 , Rebecca L. Steele 1 , Samir Kusmic 1 , Larry Bradley 2 , Rachael Livermore 3 , Stephanie Bernard 4 , Alice Jacques 1
Affiliation  

Redshift z = 9–10 object selection is the effective limit of Hubble Space Telescope (HST) imaging capability, even when confirmed with Spitzer. If only a few photometry data points are available, it becomes attractive to add criteria based on their morphology in these J - and H -band images. One could do so through visual inspection, a size criterion, or alternate morphometrics. We explore a vetted sample of Brightest of Reionizing Galaxies (BoRG) z ∼ 9 and z ∼ 10 candidate galaxies and the object rejected by Morishita+ to explore the utility of a size criterion in z = 9–10 candidate selection. A stringent, point-spread function (PSF)-corrected effective radius criterion ( ##IMG## [http://ej.iop.org/images/1538-3881/160/4/154/ajaba617ieqn1.gif] {${r}_{e}\lt 0\buildrel{\prime\prime}\over{.} 3$} ) would result in the rejection of 65%–70% of the interlopers visually rejected by Morishita et al. It may also remove up to ∼20...

中文翻译:

在最亮的电离星系(BoRG)调查中确定的z〜9-10星系的大小

即使使用Spitzer确认,Redshift z = 9–10的对象选择也是哈勃太空望远镜(HST)成像功能的有效极限。如果只有几个测光数据点可用,则在这些J和H波段图像中基于它们的形态添加标准变得很有吸引力。可以通过外观检查,尺寸标准或其他形态计量学来实现。我们探索了最亮的电离星系(BoRG)z〜9和z〜10候选星系的经过审查的样本,以及Morishita +拒绝的物体,以探索尺寸准则在z = 9–10候选选择中的效用。严格的,点扩展函数(PSF)校正的有效半径标准(## IMG ## [http://ej.iop.org/images/1538-3881/160/4/154/ajaba617ieqn1.gif] {$ {r} _ {e} \ lt 0 \ buildrel {\ prime \ prime} \ over {。} 3 $})将导致Morishita等人视觉上拒绝的闯入者的65%–70%被拒绝。它也可能最多去除约20个...
更新日期:2020-09-05
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