论文标题
Hetdex中的[O III]选择星系周围的Lyα光晕
Lyα Halos around [O III]-Selected Galaxies in HETDEX
论文作者
论文摘要
我们使用Hobby-eberly-eberly-eberly-eberly-theScope Dark Energy实验（HETDEX）将延伸的Lyman-α（Lyα）发射降至800 kpc，为1034 [O III] [O III]选择的星系。星系的位置和红移来自3D-HST调查。 [O III]选择星系的LYα发射的中值表面亮度曲线与来自星系中心的R> 40 kpc的968亮Lyα发射星系（LAE）非常吻合。然而，在[O III]选择星系周围的内部部分（r <10 kpc）的表面亮度比LAE的表面亮度是十倍。我们的结果与以下观点一致：在中央星系中，占主导地位的光子占主导地位的光子不是产生的。
We present extended Lyman-α (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 (HETDEX). The locations and redshifts of the galaxies are taken from the 3D-HST survey. The median-stacked surface brightness profile of 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 ten 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.
