Properties of Galactic Outflows Driven by Starburst at Cosmic Noon: Insights from Hydrodynamical Simulations
School of Physics and Astronomy, Sun Yat-Sen University(中山大学物理与天文学院);CSST Science Center for the Guangdong-Hong Kong-Macau Greater Bay Area(粤港澳大湾区空间科学中心)
We investigate starburst-driven galactic outflows in low-mass galaxies ($9.0 < \log(M_*/M_\odot) < 10.0$) at cosmic noon using high-resolution 3D hydrodynamical simulations based on a framework that can reproduce the multiphase outflows in M82. The simulations produce starbursts lasting 20-30 Myr, with peak star formation rates of 2-68 M$_\odot \,\rm{yr}^{-1}$. Outflow properties vary strongly with time, radial distance to galaxy center, stellar mass, and gas fraction, exhibiting velocities of 50-1000 $\,\rm{km\,s}^{-1}$, mass outflow rates of 0.3-20 M$_\odot \,\rm{yr}^{-1}$, and mass loading factors, $η_\mathrm{M}$, of 0.24-6.26. The cool phase ($8000 < T \le 2 \times 10^4$ K) dominates the outflow, and properties of the cool and warm phases are broadly consistent with observations. At $M_*= 10^{9.5}\,M_\odot$, average $η_\mathrm{M}$ for the total, cool, and warm phases are $\sim$1.2, 0.75, and 0.25, respectively. The mass loading factor decreases with increasing galaxy stellar mass, but increases with star formation rate. Given strong temporal and spatial evolution, scaling slopes from limited samples should be treated with caution. Our total $η_\mathrm{M}$ values are higher than FIRE-2 by 0.06 dex but lower than EAGLE and TNG50 by 0.50 and 0.84 dex. Accounting for methodological differences in outflow measurement reduces these gaps to 0.2-0.4 dex, suggesting that part of the discrepancy between observations and simulations reported in the literature may arise from inconsistent definitions and measurement methods, though differences in individual phases persist. Larger observational and simulation samples, together with consistent methods for measuring outflow properties, are required to draw robust conclusions about the scaling relations of galactic outflows.
Tracing Radio AGN-Driven Quenching in Post-Starburst Galaxies at Cosmic Noon
Johns Hopkins University(约翰斯·霍普金斯大学);Space Telescope Science Institute(太空望远镜科学研究所);AURA for ESA, Space Telescope Science Institute(欧洲空间局阿雷西博大学协会太空望远镜科学研究所);University of Nottingham(诺丁汉大学);University of St Andrews(圣安德鲁斯大学);University of Edinburgh(爱丁堡大学);European Southern Observatory (ESO)(欧洲南方天文台)
The JWST EXCELS survey: Insights into the nature of quenching at cosmic noon
Johns Hopkins University(约翰斯·霍普金斯大学);Space Telescope Science Institute(太空望远镜科学研究所);University of St Andrews(圣安德鲁斯大学);University of Edinburgh(爱丁堡大学);University of Nottingham(诺丁汉大学)
Reconstructing the Assembly of Massive Galaxies. II. Galaxies Develop Massive and Dense Stellar Cores as They Evolve and Head Toward Quiescence at Cosmic Noon
Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 1097
NGC 1097是附近的一个棒旋星系,据信正在与位于其西北部的椭圆星系NGC 1097 A相互作用。它拥有一个塞弗特1核,周围环绕着一个星暴环。两条笔直的尘埃带连接到环上,几乎连续不断地延伸到酒吧。尘埃带的另一端连接到两个主旋臂上。为了对其结构和运动学特性提供物理理解,进行了二维流体动力学模拟。数值计算表明,气体的形态和运动学的许多功能可以重现提供的气体流量是由一个缓慢旋转的强酒吧相关的重力势。在计算中考虑了气体盘的自引力,我们发现星暴环是引力不稳定的,这与\citet{hsieh11}的观测结果是一致的。我们的模拟表明,气体流入率为0.17 M $_\sun$年$^{-1}$到该地区内的星暴环,即使在其形成后,导致核环和环核盘的共存。
The first detection of dense gas in a massive main-sequence galaxy at cosmic noon
Universidad de Concepción(康塞普西翁大学);Millenium Nucleus for Galaxies (MINGAL)(星系千年核心(MINGAL));Cosmic Dawn Center (DAWN)(宇宙黎明中心(DAWN));DTU-Space, Technical University of Denmark(丹麦技术大学空间研究所);Purple Mountain Observatory, Chinese Academy of Sciences(中国科学院紫金山天文台);Max-Planck-Institut für Radioastronomie(马克斯·普朗克射电天文研究所);Technical University of Munich(慕尼黑工业大学);University of California, Berkeley(加州大学伯克利分校);Max-Planck-Institut für Astrophysik (MPA)(马克斯·普朗克天体物理研究所);INAF - Osservatorio Astronomico di Padova(意大利国家天体物理研究所帕多瓦天文台);Max-Planck-Institut für extraterrestrische Physik (MPE)(马克斯·普朗克地外物理研究所)
NOEMA3D: Extended CO, [C I] and dust in massive star-forming main-sequence galaxies at cosmic noon
Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理研究所);University of California, Berkeley(加州大学伯克利分校);Institut de Radioastronomie Millimétrique (IRAM)(毫米波射电天文研究所);Max-Planck-Institut für Astrophysik (MPA)(马克斯·普朗克天体物理研究所);University of Bologna(博洛尼亚大学);INAF - Astrophysics and Space Science Observatory of 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)
PAHSPECS: Polycyclic aromatic hydrocarbon properties at cosmic noon with JWST/MIRI MRS
University of Crete(克里特大学);Foundation for Research and Technology–Hellas (FORTH)(希腊研究与技术基金会);European University Cyprus(塞浦路斯欧洲大学);Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心(CAB),西班牙国家科学研究委员会-国家航空航天技术研究所);Leiden Observatory, Leiden University(莱顿天文台,莱顿大学);University of California San Diego(加州大学圣地亚哥分校);Universidad Diego Portales(迭戈·波特莱斯大学);Millenium Nucleus for Galaxies (MINGAL)(星系千年核心(MINGAL))
Evolution of the cold gas properties of simulated post-starburst galaxies
星暴后的星系通常被认为是一个过渡族群,在最近的一次猝灭事件后,正在前往红色序列。尽管如此,最近的观测表明,这些物体通常具有大量的冷分子气体。在本文中,我们研究了恒星形成气体的性质的一个大样本的后星爆星系的宇宙学,流体动力学EAGLE模拟选择。这些天体在光谱上和空间密度、恒星质量分布和大小方面都类似于观测到的大质量星暴后星系。我们发现,绝大多数的模拟后星爆星系有显着的气体水库,与恒星形成的气体质量的~10 $^9$ M $_{\odot}$,在良好的协议与观测样品中看到的。模拟再现了观测到的恒星暴后星系群气体部分的时间演化,平均星系在6亿年内就失去了90%的恒星形成星际介质。各种各样的气体消耗/损失过程是造成这种快速演化的原因,包括合并和环境影响,而活动星系核只起次要作用。恒星暴后星系气体部分的快速演化伴随着恒星形成效率的明显下降,这是由于致密气体部分的减少。我们预测,即将到来的ALMA观测的气体水库的低红移后星暴星系将表明,分子气体通常是紧凑的,并扰乱了运动学,反映了破坏性的性质的许多进化途径,建立了后星暴星系人口。
The role of mergers and rejuvenation in the buildup of the quiescent population at cosmic noon
School of Physics & Astronomy, University of Nottingham(诺丁汉大学物理与天文学院);Centre for Astrophysics Research, University of Hertfordshire(赫特福德大学天体物理学研究中心);AURA for ESA, Space Telescope Science Institute(欧洲航天局AURA空间望远镜科学研究所);School of Physics and Astronomy, University of St Andrews(圣安德鲁斯大学物理与天文学院)
PASSAGES: The Discovery of a Strongly Lensed Protocluster Core Candidate at Cosmic Noon
School of Earth & Space Exploration, Arizona State University(亚利桑那州立大学地球与空间探索学院);Department of Astronomy/Steward Observatory, University of Arizona(亚利桑那大学天文系/斯图尔德天文台);Joint ALMA Observatory(ALMA联合天文台);National Astronomical Observatory of Japan(日本国立天文台);European Southern Observatory(欧洲南方天文台);Department of Astronomy, University of Massachusetts, Amherst(马萨诸塞大学阿默斯特分校天文系);National Radio Astronomy Observatory(美国国家射电天文台)
PAHSPECS: JWST/MIRI Spectroscopy of PAHs at Cosmic Noon
Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心(CAB),西班牙国家航空航天技术研究所/西班牙国家研究委员会);Institute of Astrophysics, Foundation for Research and Technology–Hellas (FORTH)(希腊研究与技术基金会天体物理研究所);Leiden Observatory, Leiden University(莱顿大学莱顿天文台);Department of Astronomy & Astrophysics, University of California San Diego(加州大学圣地亚哥分校天文与天体物理系);Instituto de Estudios Astrofícos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales(迭戈帕托莱斯大学工程与科学学院天体物理研究所);Millenium Nucleus for Galaxies (MINGAL)(星系千年核心(MINGAL));INAF Osservatorio di Astrofisica e Scienza dello Spazio di Bologna(博洛尼亚空间天体物理学与科学国家研究院)
A z ~ 0.4 Galaxy Reflecting the high-redshift Little Red Dots: An Extended Starburst with an Overmassive Black Hole
Frontier Research Institute for Interdisciplinary Sciences, Tohoku University(东北大学前沿跨学科科学研究院);Waseda Research Institute for Science and Engineering, Waseda University(早稻田大学理工学学术院);Astronomical Institute, Tohoku University(东北大学天文学研究所);Kavli Institute for Astronomy and Astrophysics, Peking University(北京大学科维理天文与天体物理研究所);Faculty of Science and Engineering, Waseda University(早稻田大学理工学园);Waseda Institute for Advanced Study, Waseda University(早稻田大学高等研究院);Kavli Institute for the Physics and Mathematics of the Universe, UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo(东京大学宇宙物质量子研究机构(IPMU)、UTIAS、东京先端研究学院);Department of Physical Sciences, Ritsumeikan University(立命馆大学物理科学系)