Measurements of element abundances in galaxies from astrophysical spectroscopy depend sensitively on the atomic data used. With the goal of making the latest atomic data accessible to the community, we present a compilation of selected atomic data for resonant absorption lines at wavelengths longward of 911.753 Å (the \ion{H}{1} Lyman limit), for key heavy elements (heavier than atomic number 5) of astrophysical interest. In particular, we focus on the transitions of those ions that have been observed in the Milky Way interstellar medium (ISM), the circumgalactic medium (CGM) of the Milky Way and/or other galaxies, and the intergalactic medium (IGM).
We provide wavelengths, oscillator strengths, associated accuracy grades, and references to the oscillator strength determinations. We also attempt to compare and assess the recent oscillator strength determinations. For about 22\% of the lines that have updated oscillator strength values, the differences between the former values and the updated ones are $\gtrsim$~0.1 dex.
Our compilation will be a useful resource for absorption line studies of the ISM, as well as studies of the CGM and IGM traced by sight lines to quasars and gamma-ray bursts. Studies (including those enabled by future generations of extremely large telescopes) of absorption by galaxies against the light of background galaxies will also benefit from our compilation.
Connection Between Galaxies and HI in the Circumgalactic and Intergalactic Media: Variation According to Galaxy Stellar Mass and Star-formation Activity
Discovery of a multiphase OVI and OVII absorber in the circumgalactic/intergalactic transition region
WHIM的重子含量的观测约束几乎完全依赖于FUV测量。然而,宇宙学,流体动力学模拟预测FUV和X射线吸收WHIM的空间分布之间的强相关性。在这项工作中,我们调查这一预测通过分析XMM-牛顿X射线对应的FUV检测星系际OVI吸收剂已知的FUSE和HST/STIS数据,并比较这些信息的预测模拟。我们研究了在$z=0.04579\pm0.00001$发现的TonS180视线FUV光谱中唯一显著检测到的OVI吸收体的红移处的X射线吸收。我们表征的OVI-OVIII吸收剂的光谱特性,并探讨背后的测量吸收电离过程。将观测结果与EAGLE模拟中预测的温热气体性质进行比较,以推断吸收器的物理条件。我们在$5σ$置信水平下检测到OVI和OVII吸收,而未检测到OVIII吸收。CIE建模将X射线吸收气体温度约束为$\,T_{CIE}$(K)$=6.22\pm0.05$与总氢柱密度$N_H=5.8_{-2.2}^{+3.0}\times Z_{sun}/Z_{abs}\times10^{19}$ cm $^{-2}$的对数。该模型预测的OVI柱密度与FUV中测量的一致,但我们对OVI线宽的限制表明> 90%的可能性FUV检测到的OVI来自不同的较冷的相。我们发现,所观察到的吸收体在于约两个因素进一步远离检测到的星系比在鹰类似的系统的情况下。了解类似于这项工作中考虑的系统的丰度有助于定义未来X射线望远镜W…
Magnetogenesis by galactic processes: impact on circumgalactic and intergalactic fields
Kavli IPMU (WPI), UTIAS, The University of Tokyo(东京大学 Kavli 宇宙物理数学研究所);Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo(东京大学 数据驱动发现中心);Kavli Institute for Particle Astrophysics & Cosmology (KIPAC), Stanford University(斯坦福大学 Kavli 粒子天体物理与宇宙学研究所)
The Cosmic Ultraviolet Baryon Survey (CUBS) IX: The enriched circumgalactic and intergalactic medium around star-forming field dwarf galaxies traced by O VI absorption
本文基于 CUBS 数据通过 O VI 吸收线研究恒星形成矮星系周围的 CGM/IGM,发现低质量系统在 z≲1 时能有效将大量金属保留在附近的星系周与星系际介质中。
The Keck Baryonic Structure Survey: Using foreground/background galaxy pairs to trace the structure and kinematics of circumgalactic neutral hydrogen at $z \sim 2$
A Detection of Circumgalactic Dust at Megaparsec Scales with Maximum Likelihood Estimation
Northeastern University(东北大学);Jet Propulsion Laboratory, California Institute of Technology(加州理工学院喷气推进实验室);Université Paris Cité, CNRS, Astroparticule et Cosmologie(巴黎西大,法国国家科学研究中心,粒子与宇宙学)
Constraints on the Hot Circumgalactic Medium around Nearby L* Galaxies from SRG/eROSITA All Sky Survey
School of Astronomy and Space Science, Nanjing University(南京大学天文与空间科学学院);Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University(南京大学现代天文与天体物理重点实验室);Institute of Science and Technology for Deep Space Exploration, Suzhou Campus, Nanjing University(南京大学苏州校区深空探测研究院)
Simba: The average properties of the circumgalactic medium of $2 \leq z \leq 3$ quasars are determined primarily by stellar feedback
利用Simba宇宙流体动力学模拟软件包研究了反馈对$2 \leq z \leq 3$类星体周围环星系介质和星系际介质的影响。我们发现辛巴类星体是吸积速度最快的黑洞,并表明它们在热光度和相关强度上与真正的类星体很好地匹配。我们提取莱曼α(Ly-a)吸收光谱通过在不同的横向距离(10千秒差距$\lesssim b \lesssim$ 10百万秒差距)周围的类星体,并比较观察到的平均Ly-a吸收曲线。观测结果被很好地再现,除了在100 kpc的前景类星体,辛巴过度产生吸收;这可能会通过包括类星体本身的电离来减轻。通过比较不同的反馈模块激活的运行,我们发现,(机械)AGN反馈对周围的CGM几乎没有影响,即使在这些最高亮度的黑洞,而恒星反馈有显着的影响。通过进一步研究CGM气体的热力学和运动学性质,我们发现恒星反馈而不是活动星系核反馈是决定$z\sim 2-3$类星体周围CGM平均性质的主要物理驱动因素。我们还比较了我们的结果与以前的作品,并发现辛巴预测更多的吸收在100千秒差距内比尼克斯和Illustris模拟,表明Ly-a吸收曲线可以是一个强大的约束模拟。VLT-MUSE等工具和即将进行的调查(例如,WEAVE和DESI)承诺进一步改进此类约束。
Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5
Observatori Astronòmic de la Universitat de València(瓦伦西亚大学天文台);Departament d’Astronomia i Astrofísica, Universitat de València(瓦伦西亚大学天文学与天体物理学系);Universität Heidelberg(海德堡大学);Max Planck Institute for Astrophysics(马克斯·普朗克天体物理学研究所);Tsinghua University(清华大学);IFCA-CSIC/Universitat de València(坎塔布里亚物理研究所CSIC-瓦伦西亚大学联合单位);Instituto de Física de Cantabria (CSIC-UC)(坎塔布里亚物理研究所)
Resolving circumgalactic gas flows around a z$\approx$3.6 quasar using MUSE and ALMA
Università degli Studi di Milano-Bicocca(米兰比可卡大学);DTU Space, Technical University of Denmark(丹麦技术大学空间中心);Cosmic Dawn Center (DAWN)(宇宙黎明中心);INAF–Osservatorio Astronomico di Trieste(意大利国家天体物理研究所的里雅斯特天文台);Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);INAF–Osservatorio di Astrofisica e Scienza dello Spazio(意大利国家天体物理研究所天文与空间科学观测站);IUCAA(印度天体物理学与宇宙学大学研究中心);Leiden Observatory, Leiden University(莱顿大学莱顿天文台)
Discovery of Weak O VI Absorption in Underdense Regions of the Low-Redshift Intergalactic Medium
Space Telescope Science Institute(太空望远镜科学研究所);Indian Institute of Technology Tirupati(印度理工学院蒂鲁帕蒂分校);Indian Institute of Science Education and Research (IISER), Mohali(印度科学教育与研究学院(IISER),莫哈利);Indian Institute of Space Science & Technology(印度空间科学与技术学院);AURA for ESA, Space Telescope Science Institute(欧洲航天局AURA联盟,太空望远镜科学研究所)
Resolving the Origins and Pathways of Ionizing Radiation Escape with UV Integral Field Spectroscopy
Center for Cosmology and Computational Astrophysics, Institute for Advanced Study in Physics, Zhejiang University(浙江大学物理高等研究院宇宙学与计算天体物理中心);Laboratory for Atmospheric and Space Physics(大气与空间物理实验室);Institute for Astronomy, University of Edinburgh, Royal Observatory(爱丁堡大学天文研究所皇家天文台);Johns Hopkins University, Department of Physics & Astronomy, Center for Astrophysical Sciences(约翰斯·霍普金斯大学天体物理学科学中心物理与天文学系);Astronomy Department, University of Michigan(密歇根大学天文学系);Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University(西北大学天体物理交叉探索与研究中心);Department of Physics and Astronomy, Northwestern University(西北大学物理与天文学系);Institute of Astronomy, School of Physics, Zhejiang University(浙江大学物理学院天体物理研究所)