发表机构
INAF-Osservatorio Astronomico di Capodimonte; INAF-Osservatorio Astronomico di Trieste; INAF-Osservatorio Astrofisico di Arcetri; Dipartimento di Fisica e Astronomia, Università di Firenze; University of Trento; Department of Physics, Centre for Extragalactic Astronomy, Durham University; Department of Mathematics and Physics, Roma Tre University; INAF-Osservatorio Astronomico di Roma; Leiden Observatory, Leiden University; Kapteyn Astronomical Institute, University of Groningen; INAF-Istituto di Astrofisica e Planetologia Spaziali; School of Physics & Astronomy, University of Southampton（意大利国家天体物理研究所卡波迪蒙特天文台; 意大利国家天体物理研究所的里雅斯特天文台; 意大利国家天体物理研究所阿切特里天文台; 佛罗伦萨大学物理与天文系; 特伦托大学; 达勒姆大学河外天文中心物理系; 罗马第三大学数学与物理系; 意大利国家天体物理研究所罗马天文台; 莱顿大学莱顿天文台; 格罗宁根大学卡普坦天文研究所; 意大利国家天体物理研究所空间天体物理学和行星科学研究所; 南安普顿大学物理与天文学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
基于 Euclid Q1 光谱数据，对 5489 个类星体进行拟合分析，测量发射线性质并估算黑洞质量，提供物理性质星表。
AI 中文摘要
随着 Euclid 数据发布 (Q1) 的到来，大量光谱数据变得可用，这为研究 Euclid 深场中的类星体 (QSOs)、提供光谱测量及其物理性质估计提供了独特的机会。我们展示了使用 Q1 对 HE <= 22.5 的类星体进行光谱分析的结果。我们使用来自暗能量光谱仪器 (DESI)、Gaia、广域红外巡天探测器 (WISE) 以及南半球宇宙学明亮信标类星体 (QUBRICS) 等巡天的外部星表进行类星体选择和红移确定，共计 5489 个类星体。我们基于统计拟合和信噪比 (S/N)，提供了 Euclid 光谱发射线的线通量、半高全宽及其相应不确定性的测量值。在总共 5489 个类星体中，有 5387 个成功完成拟合。我们发现，成功拟合光谱总数的 45% 没有有问题的伪影，从而允许进行可信的测量。我们最终的 Euclid 类星体样本覆盖红移范围 0.01 <= z <= 4.8，并显示出中值光谱指数 {\alpha}{\lambda} = -1.17。最后，我们使用单历元方法，利用 He I {\lambda}10830、Pa {\beta}、H {\alpha}、H {\beta} 和 Mg II 发射线估算了 1213 个源的黑洞质量，获得平均对数质量 log10 (MBH / Msolar) = 8.7 和平均爱丁顿比率 {\lambda}Edd = 0.34。包含该样本物理性质的星表以及为分析开发的软件可在网上获取，以供科学利用。
英文摘要
A substantial volume of spectroscopic data has become available with the Euclid Data Release (Q1), which represents a unique opportunity to study quasars (QSOs) in the Euclid Deep Fields, provide spectroscopic measurements, and estimates of their physical properties. We present results from a spectroscopic analysis of QSOs with HE < = 22.5 using Q1. We use external catalogues from surveys such as the Dark Energy Spectroscopic Instrument (DESI), Gaia, Wide-field Infrared Survey Explorer (WISE), and the QUasars as BRIght beacons for Cosmology in the Southern hemisphere (QUBRICS) for the QSO selection and redshift determination, totaling 5489 QSOs. We provide measurements of the line fluxes, full widths at half-maximum, and respective uncertainties for the emission lines of Euclid spectra based on fitting statistica and signal-to-noise ratio (S/N). Of the total 5489 QSOs, 5387 are successfully fitted. We find that 45% of the total number of successfully fitted spectra are free of problematic artefacts allowing for trustworthy measurements. Our final Euclid QSO sample spans a redshift range of 0.01 < = z < = 4.8 and shows a median spectral index of αλ = - 1.17. Finally, we estimate black hole masses with single epoch methods for 1213 sources, using the He I λ10830, Pa β, H α, H β, and Mg II emission lines, obtainning a mean logarithmc mass of log10 (MBH / Msolar) = 8.7 and mean Edigton ratio of λEdd = 0.34. The catalogue with the physical properties of this sample together with the software developed for the analysis is available online for scientific exploitation.
Comments24 pages, 17 figures, 4 tables, online data available at https://github.com/astrocalhau/LinesInTheSky . Submitted to A&A
