论文标题
文物：在$ z = 6-10 $的镜头星系中的小型星形星系中
RELICS: Small-scale Star Formation in Lensed Galaxies at $z = 6-10$
论文作者
论文摘要
对高红移的恒星形成星系的详细观察对于了解最早星系的形成和演变至关重要。重力镜头可提供重要的提升，从而可以在未透析星系中无法达到的物理尺度上进行观察。我们在$ z_ {phot} = 6-10 $中介绍了三个镜头的星系，其中包括$ z_ {phot} \ sim 6 $（whl0137-zd1）的最高度放大的星系，称为sunrise arc，是$ z_ phot sim phot sim 6 $（MacS 6 $）（MacS 6 $）（MACD），当前已知的已解决的星系已知$ z_ {phot} \ sim 10 $（SPT0615-JD）。日出弧包含七个恒星的团块，其删节的半径小至3 pc，这是在$ z> 6 $的星系中观察到的最小的空间尺度，而SPT0615-JD包含测量几十parsecs的特征。 MacS0308-ZD1包含一个$ r \ sim 30 $ PC团块，其星形形成率（SFR）为$ \ sim 3 m _ {\ odot} \ textrm {yr}^{ - 1} $ yr}^{ - 1} \ textrm {kpc}^{ - 2} $。这些星系在电离时期为小规模恒星形成提供了独特的窗口。它们将是与JWST进行未来观察的绝佳目标，包括针对日出弧的一项批准的计划。
Detailed observations of star forming galaxies at high redshift are critical to understand the formation and evolution of the earliest galaxies. Gravitational lensing provides an important boost, allowing observations at physical scales unreachable in unlensed galaxies. We present three lensed galaxies from the RELICS survey at $z_{phot} = 6 - 10$, including the most highly magnified galaxy at $z_{phot} \sim 6$ (WHL0137-zD1, dubbed the Sunrise Arc), the brightest known lensed galaxy at $z_{phot} \sim 6$ (MACS0308-zD1), and the only spatially resolved galaxy currently known at $z_{phot} \sim 10$ (SPT0615-JD). The Sunrise Arc contains seven star-forming clumps with delensed radii as small as 3 pc, the smallest spatial scales yet observed in a $z>6$ galaxy, while SPT0615-JD contains features measuring a few tens of parsecs. MACS0308-zD1 contains a $r\sim 30$ pc clump with a star formation rate (SFR) of $\sim 3 M_{\odot} \textrm{ yr}^{-1}$, giving it a SFR surface density of $Σ_{SFR} \sim 10^3 M_{\odot}\textrm{ yr}^{-1}\textrm{ kpc}^{-2}$. These galaxies provide a unique window into small scale star formation during the Epoch of Reionization. They will be excellent targets for future observations with JWST, including one approved program targeting the Sunrise Arc.
