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arXiv 2212.07366astro-ph.GA
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韦布首个深场 SMACS J0723.3$-$7327 的首个大样本光谱红移星表

The first large catalogue of spectroscopic redshifts in Webb's First Deep Field, SMACS J0723.3$-$7327

Gaël Noirot, Guillaume Desprez, Yoshihisa Asada, Marcin Sawicki, Vicente Estrada-Carpenter, Nicholas Martis, Ghassan Sarrouh, Victoria Strait, Roberto Abraham, … 展开作者

Gaël Noirot, Guillaume Desprez, Yoshihisa Asada, Marcin Sawicki, Vicente Estrada-Carpenter, Nicholas Martis, Ghassan Sarrouh, Victoria Strait, Roberto Abraham, Maruša Bradač, Gabriel Brammer, Kartheik Iyer, Shannon MacFarland, Jasleen Matharu, Lamiya Mowla, Adam Muzzin, Camilla Pacifici, Swara Ravindranath, Chris J. Willott, Loïc Albert, René Doyon, John B. Hutchings, Neil Rowlands

AI总结:

本文基于 JWST/NIRISS 无缝光谱并结合 NIRSpec 和 MUSE 数据,构建了韦布首个深场 SMACS J0723.3-7327 的首个大样本光谱红移星表,包含 190 个可靠红移,并新发现 z=1.1、1.4、2.0 处的星系密度超。

摘要:

我们给出了 SMACS J0723.3$-$7327 天区(“韦布首个深场”)的光谱红移星表,该星表由 JWST/NIRISS 无缝光谱观测获得,并补充了 JWST/NIRSpec 和 VLT/MUSE 红移。该星表共包含 190 个具有可靠光谱红移的源,其中包括 156 个 NIRISS 无缝光谱红移,其中 123 个源的红移此前未知。这些新的无缝光谱红移通过两条或更多光谱特征(64 个源)得到确认,或通过单一光谱特征(其证认由该天体的九波段测光红移确定)得到确认(59 个源)。此外还补充了 17 个 NIRSpec 红移和 48 个 MUSE 红移,其中包括本工作中新证认的 6 个 NIRSpec 红移。除了 $z_{\ m cl}=0.39$ 的星系团星系红移(我们为此提供了约 40 个新的 NIRISS 吸收线红移)之外,我们还在更高红移处发现了三个显著的星系密度超,分别位于 $z=1.1$、$z=1.4$ 和 $z=2.0$,这些结构在此前的 JWST/NIRSpec 和 VLT/MUSE 数据中均未被发现。本文描述了我们光谱红移样本的特征以及为获得该样本所采用的方法。我们的红移星表已在 https://niriss.github.io/smacs0723 向社区公开。

英文摘要:

We present a spectroscopic redshift catalogue of the SMACS J0723.3$-$7327 field ("Webb's First Deep Field") obtained from JWST/NIRISS grism spectroscopy and supplemented with JWST/NIRSpec and VLT/MUSE redshifts. The catalogue contains a total of 190 sources with secure spectroscopic redshifts, including 156 NIRISS grism redshifts, 123 of which are for sources whose redshifts were previously unknown. These new grism redshifts are secured with two or more spectroscopic features (64 sources), or with a single spectral feature whose identity is secured from the object's nine-band photometric redshift (59 sources). These are complemented with 17 NIRSpec and 48 MUSE redshifts, including six new NIRSpec redshifts identified in this work. In addition to the $z_{\rm cl}=0.39$ cluster galaxy redshifts (for which we provide $\sim$40 new NIRISS absorption-line redshifts), we also find three prominent galaxy overdensities at higher redshifts - at $z=1.1$, $z=1.4$, and $z=2.0$ - that were until now not seen in the JWST/NIRSpec and VLT/MUSE data. The paper describes the characteristics of our spectroscopic redshift sample and the methodology we have employed to obtain it. Our redshift catalogue is made available to the community at https://niriss.github.io/smacs0723.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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