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Astrophysics > Astrophysics of Galaxies

arXiv:2504.00823 (astro-ph)
[Submitted on 1 Apr 2025 (v1) , last revised 18 Jun 2025 (this version, v2)]

Title: The GLASS-JWST Early Release Science Programme: The NIRISS Spectroscopic Catalogue

Title: GLASS-JWST早期释放科学计划:NIRISS光谱目录

Authors:Peter J. Watson, Benedetta Vulcani, Tommaso Treu, Guido Roberts-Borsani, Nicolò Dalmasso, Xianlong He, Matthew A. Malkan, Takahiro Morishita, Sofía Rojas Ruiz, Yechi Zhang, Ayan Acharyya, Pietro Bergamini, Maruša Bradač, Adriano Fontana, Claudio Grillo, Tucker Jones, Danilo Marchesini, Themiya Nanayakkara, Laura Pentericci, Chanita Tubthong, Xin Wang
Abstract: We present a spectroscopic redshift catalogue of sources in the Abell 2744 cluster field, derived from JWST/NIRISS observations taken as part of the GLASS-JWST Early Release Science programme. We describe the data reduction, contamination modelling and source detection, as well as the data quality assessment, redshift determination and validation. The catalogue consists of 354 secure and 134 tentative redshifts, of which 245 are new spectroscopic redshifts, spanning a range $0.1 \leq z \leq 8.2$. These include 17 galaxies at the cluster redshift, one galaxy at $z \approx 8$, and a triply-imaged galaxy at $z = 2.653 \pm 0.002$. Comparing against galaxies with existing spectroscopic redshifts $z_{\rm{spec}}$, we find a small offset of $\Delta z = (z_{\rm{spec}} - z_{\rm{NIRISS}} )/(1 + z_{\rm{spec}} ) = (1.3 \pm 1.6) \times 10^{-3}$. We also present a forced extraction tool (pygrife) and a visualisation tool (pygcg) to the community, to aid with the reduction and classification of grism data. This catalogue will enable future studies of the spatially-resolved properties of galaxies throughout cosmic noon, including dust attenuation and star formation. As a first application of the catalogue, we discuss the spectroscopic confirmation of multiple image systems, and the identification of multiple overdensities at $1 < z < 2.7$.
Abstract: 我们给出了阿贝尔 2744 星团区域源的光谱红移星表,该星表源自作为 GLASS-JWST 拜耳早起科学计划一部分的 JWST/NIRISS 观测数据。 我们描述了数据处理、污染建模和源检测,以及数据质量评估、红移确定和验证。 星表包括 354 个安全红移和 134 个暂定红移,其中 245 个是新的光谱红移,范围为 $0.1 \leq z \leq 8.2$。 其中包括 17 个位于星团红移处的星系、1 个位于 $z \approx 8$ 处的星系,以及 1 个位于 $z = 2.653 \pm 0.002$ 处的三重成像星系。 与已有光谱红移的星系 $z_{\rm{spec}}$ 进行比较,我们发现了一个小偏移 $\Delta z = (z_{\rm{spec}} - z_{\rm{NIRISS}} )/(1 + z_{\rm{spec}} ) = (1.3 \pm 1.6) \times 10^{-3}$。 我们还向社区提供了强制提取工具(pygrife)和可视化工具(pygcg),以帮助处理和分类光栅数据。 该星表将使未来对宇宙正午时期星系的空间分辨属性的研究成为可能,包括尘埃消光和恒星形成。 作为该星表的第一个应用,我们讨论了多图像系统的光谱确认以及在 $1 < z < 2.7$ 处多个过密区域的识别。
Comments: 17 pages, 14 figures (including appendices). Accepted for publication in A&A. The catalogue is included in the source files
Subjects: Astrophysics of Galaxies (astro-ph.GA)
Cite as: arXiv:2504.00823 [astro-ph.GA]
  (or arXiv:2504.00823v2 [astro-ph.GA] for this version)
  https://doi.org/10.48550/arXiv.2504.00823
arXiv-issued DOI via DataCite
Journal reference: A&A 699, A225 (2025)
Related DOI: https://doi.org/10.1051/0004-6361/202554954
DOI(s) linking to related resources

Submission history

From: Peter Watson [view email]
[v1] Tue, 1 Apr 2025 14:09:56 UTC (6,922 KB)
[v2] Wed, 18 Jun 2025 10:54:20 UTC (10,943 KB)
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