论文标题
Z = 6.803时双峰lyman-$α$排放：Reionisation-eragation-e时代自发其本地HII泡沫
Double-peaked Lyman-$α$ emission at z=6.803: a reionisation-era galaxy self-ionising its local HII bubble
论文作者
论文摘要
我们报告了在银河系中发现双峰的Lyman-Alpha概况的$ z = 6.803 $，A370p \ _Z1，在Abell 370的平行边界领域。 （\ pm48）\，\ text {km s}^{ - 1} $）表明，电离光子的逃逸分数极高，$> 59（51）\％（2σ）$。频谱能分布表示年轻（$ 50 $ MYR），星形（$ 12 \ pm 6 \，\ rm {m} _ \ odot \ rm {yr}^{ - 1} $）银河系，伊拉克（Irac根据测量的高逃逸分数，我们证明A370P \ _Z1完全能够创建一个足够大的离子气泡，以说明其Lyman-Alpha曲线的蓝色成分。我们讨论A370P \ _Z1是否可以代表更大的发光$ z \ simeq7 $双峰lyman-alpha发射源，并具有高逃逸部分，而没有相关的UV-Flainter来源的贡献。
We report the discovery of a double-peaked Lyman-alpha profile in a galaxy at $z=6.803$, A370p\_z1, in the parallel Frontier Field of Abell 370. The velocity separation between the blue and red peaks of the Lyman-$α$ profile ($Δv=101_{-19}^{+38} (\pm48)\,\text{km s}^{-1}$) suggests an extremely high escape fraction of ionising photons $> 59(51)\% (2σ)$. The spectral energy distribution indicates a young ($50$ Myr), star-forming ($12\pm 6 \, \rm{M}_\odot \rm{yr}^{-1}$) galaxy with an IRAC excess implying strong [OIII]+H$β$ emission. On the basis of the high escape fraction measured, we demonstrate that A370p\_z1 was solely capable of creating an ionised bubble sufficiently large to account for the blue component of its Lyman-alpha profile. We discuss whether A370p\_z1 may be representative of a larger population of luminous $z\simeq7$ double-peaked Lyman-alpha emitting sources with high escape fractions that self-ionised their surroundings without contributions from associated UV-fainter sources.
