Lyα Halos around [O iii]-selected Galaxies in HETDEX
Lyα Halos around [O iii]-selected Galaxies in HETDEX
复制标题
HETDEX 中 [O iii] 选定星系周围的 Lyα 光环
DOI：
--
复制
发表时间：
2022
影响因子：
7.9
通讯作者：
G. Zeimann
中科院分区：
文献类型：
--
作者：
Maja Lujan Niemeyer;William P. Bowman;R. Ciardullo;M. Gronke;E. Komatsu;M. Fabricius;D. Farrow;S. Finkelstein;K. Gebhardt;C. Gronwall;G. Hill;Chenxu Liu;E. Cooper;D. Schneider;S. Tuttle;G. Zeimann
利用Hobby-Eberly望远镜暗能量实验，研究了1034个[O iii]选择星系在红移1.9 < z < 2.35时的Lyα辐射。星系的位置和红移来自3D-HST巡天。在距星系中心r > 40 kpc处，[O iii]选择星系Lyα发射的表面亮度中值叠加轮廓与968个亮Lyα发射星系（LAEs）的一致。然而，[O iii]选择星系周围内部（r < 10 kpc）的表面亮度比LAEs暗10倍。我们的结果与这样的观点一致，即主导Lyα晕外部区域的光子不是在中心星系中产生的，而是起源于它们之外。
We present extended Lyα emission out to 800 kpc of 1034 [O iii]-selected galaxies at redshifts 1.9 < z < 2.35 using the Hobby–Eberly Telescope Dark Energy Experiment. The locations and redshifts of the galaxies are taken from the 3D-HST survey. The median-stacked surface brightness profile of the Lyα emission of the [O iii]-selected galaxies agrees well with that of 968 bright Lyα-emitting galaxies (LAEs) at r > 40 kpc from the galaxy centers. The surface brightness in the inner parts (r < 10 kpc) around the [O iii]-selected galaxies, however, is 10 times fainter than that of the LAEs. Our results are consistent with the notion that photons dominating the outer regions of the Lyα halos are not produced in the central galaxies but originate outside of them.
影响因子：
4.8
作者：
Faucher-Giguere, Claude-Andre
通讯作者：
Faucher-Giguere, Claude-Andre