The imprint of AGN-driven outflows on the CGM: the case of Lyα nebulae around high-z quasars
European Southern Observatory(欧洲南方天文台);Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理研究所);Centre for Astrophysics Research, University of Hertfordshire(赫特福德大学天体物理学研究中心);Max-Planck-Institut für Astrophysik(马克斯·普朗克天体物理研究所);Newcastle University(纽卡斯尔大学);International Gemini Observatory/NSF NOIRLab(国际双子座天文台/美国国家光学红外天文实验室);INAF – Osservatorio di Astrofisica e Scienza dello Spazio di Bologna(意大利国家天体物理研究所博洛尼亚天文与空间科学观测站)
Silvia C. Rueda-Vargas, Vincenzo Mainieri, Giulia Tozzi, Darshan Kakkad, Fabrizio Arrigoni-Battaia, Tiago Costa, Emanuele Paolo Farina, Chris M. Harrison
备注:
17 pages, 10 figures, 5 tables (+1 page, 2 figures in Appendix). Accepted for publication in A&A
Some cosmological hydrodynamical simulations predict that outflows driven by active galactic nuclei (AGN) play a key role in powering the Ly$α$ nebulae observed around high-redshift quasars. In such simulations, AGN feedback seeded as powerful outflows leads to extended and luminous nebulae whose morphology and surface-brightness profiles accurately reproduce the observations, while suppressing AGN feedback leads to compact and faint nebulae. This link might arise from outflows opening up a channel for Ly$α$ photons to escape from the galactic nucleus to the circumgalactic medium (CGM). The main aim of this paper is to test this theoretical prediction using observations, by comparing the physical properties of outflows and Ly$α$ nebulae. We analyze integral-field unit data obtained with VLT/ERIS and GEMINI/GNIRS to trace the ionized gas in the interstellar medium (ISM) of a sample of six quasars at $z\sim2-3$, using the [O III] emission line. We detect powerful outflows in all the quasars of our sample, with velocities $>1500~\mathrm{km~s^{-1}}$ and kinetic energies $ \gtrsim 2\times10^{43}~\mathrm{erg~s^{-1}}$. Four of our quasars are spatially resolved and show signs of extended [O III] emission out to distances $>2$ kpc from the central supermassive black hole. When excluding one outlier, we find a positive monotonic correlation between the outflow power and the Ly$α$ nebulae size ($ρ=0.89$, $p=0.03$) and luminosity ($ρ=0.6$, $p=0.28$). Additionally, we find evidence of spatial alignment between the ionization cone and the inner and brightest regions of the Ly$α$ nebula. Our results provide tentative evidence in support of the theoretical prediction that AGN-driven outflows at ISM scales open a low-optical-depth path for central Ly$α$ photons to reach the CGM and create extended nebulae.
Resolving the physics of Quasar Ly$α$ Nebulae (RePhyNe): II. The dense and clumpy CGM of Quasars at $z \sim$ 3.5
Università degli Studi di Milano-Bicocca(米兰比可卡大学);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);Leiden University(莱顿大学);University of Groningen(格罗宁根大学);New York University Abu Dhabi(纽约大学阿布扎比分校);Università degli Studi dell’Insubria(因斯布鲁克大学);INFN, Sezione di Milano-Bicocca(意大利国家核物理研究所米兰比可卡分部)
The FLASHES Survey I: Integral Field Spectroscopy of the CGM around 48 $z=2.3-3.1$ QSOs
我们提出的试点研究组成部分的荧光莱曼-阿尔法结构在高z环境(FLASHES)调查,最大的积分场光谱调查迄今为止的环银河系介质在$z=2.3-3.1$。我们在2015年至2018年期间使用Palomar Cosmic Web Imager(Matuszewski et al. 2010)观察了48个类星体场。在观测到的类星体中,有42/48的类星体周围发现了扩展的HI莱曼- $\mathrmα$辐射,投影的通量加权半径从21-71千秒差距(pkpc)不等,有26个星云的有效直径超过$100\mathrm{~pkpc}$。圆形平均表面亮度径向轮廓的峰值最大为$\mathrm{1\times 10^{-17}~erg~s^{-1}~cm^{-2}~arcsec^{-2}}$($2\times10^{-15}~\mathrm{erg~s^{-1}~cm^{-2}~arcsec^{-2}}$调整宇宙学调光),光度范围从$1.9\times10^{43}~\mathrm{erg~s^{-1}}$到$-14.1\times10^{43}~\mathrm{erg~s^{-1}}$。发射似乎有一个高度偏心的形态和最大的覆盖因子$50\%$($60\%$为巨大星云)。平均而言,星云光谱相对于类星体光谱的系统红移和Ly $α$峰都发生了红移。星云的积分光谱大多具有单峰或双峰的线形,其整体色散范围从$16…
A Comprehensive Study of Morphology and Kinematics in Extended Nebulae Around UV Luminous Quasars at $z\approx1$
University of Michigan(密歇根大学);The University of Chicago(芝加哥大学);Aix-Marseille Univ.(艾克斯-马赛大学);CNRS(法国国家科学研究中心);French-Chilean Laboratory for Astronomy, IRL 3386, CNRS and Universidad de Concepción(中智天文学联合实验室,IRL 3386,法国国家科学研究中心与康塞普西翁大学);Universidad de Concepción(康塞普西翁大学);Space Telescope Science Institute(太空望远镜科学研究所);Johns Hopkins University(约翰斯·霍普金斯大学);National Center for Supercomputing Applications, University of Illinois Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校超级计算应用国家中心);Michigan Institute for Data Science, University of Michigan(密歇根大学数据科学研究所)
Evolution of the Cool Gas in the Circumgalactic Medium (CGM) of Massive Halos -- A Keck Cosmic Web Imager (KCWI) Survey of Ly$α$ Emission around QSOs at $z\approx2$
最近发现$z \gtrsim 3$类星体周围的Ly $α$辐射几乎无处不在,我们利用Keck宇宙网成像仪(KCWI)--一种新的宽视场、蓝敏积分场摄谱仪(IFU)--的独特能力,在$z\approx2$对类星体环星系Ly $α$辐射进行了系统的研究。本文介绍了在$z=2.1-2.3$上对16个超亮I型类星体进行的KCWI观测,电离光度为$L_{\rm{ν_{\rm{LL}}}}=10^{31.1-32.3}$ erg s $^{-1}$ Hz $^{-1}$。我们发现,16个类星体中有14个与Ly $α$星云有关,其投影线性尺寸大于50物理千秒差距(pkpc)。其中,有四个星云具有巨大的Ly $α$辐射,其表面亮度为$SB_{\rm{Lyα}} >10^{-17}$ erg s $^{-1}$ cm $^{-2}$ arcsec $^{-2}$($>100$ kpc尺度),超出了KCWI的视野范围。我们的KCWI观测显示,大多数$z\approx2$类星体星云的形态比$z\gtrsim3$的更不规则。反过来,我们测量到$z\approx2$处的圆平均表面亮度(SB)比$z\gtrsim 3$处的红移校正中值SB暗0.4 dex。类星体在$z\approx 2$的Ly $α$ SB廓线(SB $_{\rm{Lyα}}$)可用SB $_{\rm{Lyα},z\approx2.3}= 3…
Unveiling the Cosmic Dawn with SHARP: Probing extended Lyman-$α$ nebulae in a Universe less than 600 Myr old
INAF-IASF Milano(意大利国家天体物理研究所米兰天文物理研究所);INAF – Osservatorio Astronomico di Roma(意大利国家天体物理研究所罗马天文台);Department of Mathematics and Physics, Roma Tre University(罗马三大大学数学与物理系);INAF–OAT, Osservatorio Astronomico di Trieste(意大利国家天体物理研究所的里雅斯特天文台)
Environmental Imprints on the Assembly of the Cool Gas around Bright Cluster Galaxies
Xiamen University(厦门大学);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);University of Chinese Academy of Sciences(中国科学院大学);University of Science and Technology of China(中国科学技术大学)
Revealing the Gas Recycling in the Circumgalactic Medium (CGM) Utilizing a Luminous Ly$α$ Nebula Around a Type-II Quasar at z=2.6 with the Keck Cosmic Web Imager (KCWI)
Formation and Evolution of [Wolf-Rayet] Planetary Nebulae through a Late Thermal Pulse
Universidad Nacional Autónoma de México(墨西哥国立自治大学);Instituto de Astrofísica de Andalucía, IAA-CSIC(安达卢西亚天体物理学研究所);Facultad de Ciencias de la Tierra y el Espacio, Universidad Autónoma de Sinaloa(西马劳亚大学地球与空间科学学院);Instituto de Astrofísica de La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas(拉普拉塔天体物理学研究所);Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata(拉普拉塔国立大学天文与地物科学学院);Institut für Physik und Astronomie, Universität Potsdam(波茨坦大学物理与天文学研究所);Fakultät für Physik, Universität Duisburg-Essen(杜伊斯堡-埃森大学物理学院)
J-PAS: Discovery of RaJav, a bright spatially extended Ly$α$ Nebula at z=2.25
Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, CAS(中国科学院上海天文台星系与宇宙学重点实验室);Instituto de Física de Cantabria(坎塔布里亚物理研究所);Donostia International Physics Centre(圣塞巴斯蒂安国际物理中心);Ikerbasque, Basque Foundation for Science(伊克拉巴斯科,巴斯克科学基金会);Instruments4(Instruments4公司)