Variations of the initial mass function in semi-analytical models: implications for the mass assembly and the chemical enrichment of galaxies in the GAEA model
In this work, we investigate the implications of the Integrated Galaxy-wide stellar Initial Mass Function (IGIMF) approach in the framework of the semi-analytic model GAEA (GAlaxy Evolution and Assembly), which features a detailed treatment of chemical enrichment and stellar feedback. The IGIMF provides an analytic description of the dependence of the stellar IMF shape on the rate of star formation in galaxies. We find that our model with a universal IMF predicts a rather flat [$α$/Fe]-stellar mass relation. The model assuming the IGIMF, instead, is able to reproduce the observed increase of $α$-enhancement with stellar mass, in agreement with previous studies. This is mainly due to the fact that massive galaxies are characterized by larger star formation rates at high-redshift, leading to stronger $α$-enhancement with respect to low-mass galaxies. At the same time, the IGIMF hypothesis does not affect significantly the trend for shorter star formation timescales for more massive galaxies. We argue that in the IGIMF scenario the [$α$/Fe] ratios are good tracers of the highest star formation events. The final stellar masses and mass-to-light-ratio of our model massive galaxies are larger than those estimated from the synthetic photometry assuming a universal IMF, providing a self-consistent interpretation of similar recent results, based on dynamical analysis of local early type galaxies.
Probing the dawn of galaxies: star formation and feedback in the JWST era through the GAEA model
University of Trieste(的里雅斯特大学);INAF – Astronomical Observatory of Trieste(意大利国家天体物理研究所-的里雅斯特天文台);IFPU – Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);Institute of Physics, GalSpec Laboratory, EPFL(洛桑联邦理工学院物理系星系光谱实验室);Tianjin Normal University(天津师范大学);Université Paris-Saclay(巴黎萨克雷大学);Université Paris Cité(巴黎西岱大学);CEA(法国原子能和替代能源委员会);CNRS(法国国家科学研究中心);AIM(天体物理学与分子研究国际实验室)
Mass Assembly and Chemical Complexity in the Milky Way
UK Astronomy Technology Centre(英国天文技术中心);University of Bath(巴斯大学);INAF-IAPS(意大利国家天体物理研究所-行星科学研究所);Max Planck Institute for Astronomy(马克斯·普朗克天文学研究所);INAF–Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所-阿切特里天文台);Observatoire Astronomique de Strasbourg(斯特拉斯堡天文台);University of Hertfordshire(赫特福德大学);Centro de Astrobiología, CSIC–INTA(西班牙国家航空航天技术研究院-西班牙国家科学研究委员会天体生物学中心);Max Planck Institute for Radio Astronomy(马克斯·普朗克射电天文研究所);NRC Herzberg Astronomy & Astrophysics(加拿大国家研究委员会赫茨伯格天文学与天体物理学研究所);Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯·玻尔研究所);Academia Sinica Institute of Astronomy & Astrophysics(中央研究院天文及天文物理研究所);European Southern Observatory(欧洲南方天文台);Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理研究所)
When dust growth takes over: the origin of dust in post-reionization galaxies
INAF – Astronomical Observatory of Trieste(意大利国家天体物理研究所的里雅斯特天文台);University of Khartoum – Department of Physics(喀土穆大学);IFPU – Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);Caltech/IPAC(加州理工学院/IPAC);Tianjin Astrophysics Center, Tianjin Normal University(天津师范大学天津天体物理中心);Institute for Physics, Laboratory for Galaxy Evolution, EPFL(洛桑联邦理工学院)
INAF - Astronomical Observatory of Trieste(意大利国家天体物理研究所的里雅斯特天文台);IFPU - Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);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体物理学与空间科学观测站);Tianjin Astrophysics Center, Tianjin Normal University(天津师范大学天津天体物理中心);EPFL - Institute for Physics, Laboratory for Galaxy Evolution(洛桑联邦理工学院物理学院星系演化实验室)
Environmental history of filament galaxies: stellar mass assembly and star-formation of filament galaxies
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);IFPU - Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);INAF – Osservatorio astronomico di Padova(意大利国家天体物理研究所帕多瓦天文台);Tianjin Normal University(天津师范大学)
GLIMPSE-DDT spectroscopic properties of faint-end galaxies at $z\sim6$: Towards first metal enrichment, dust production, and ionizing photon production
The University of Texas at Austin(德克萨斯大学奥斯汀分校);MIT Kavli Institute for Astrophysics and Space Research(麻省理工学院卡弗里天体物理学与空间研究研究所);Cosmic Dawn Center (DAWN), Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯玻尔研究所黎明宇宙中心);Tufts University(塔夫茨大学);Univ Lyon, Univ Lyon1, Ens de Lyon(里昂大学,里昂第一大学,里昂高等师范学校);University of Geneva(日内瓦大学);Institute of Astronomy, University of Cambridge(剑桥大学天文学研究所);Rutgers University(罗格斯大学);Space Telescope Science Institute(太空望远镜科学研究所)
EDGE-INFERNO: The chemical signatures of assembly history in reionization fossils
American Museum of Natural History(美国自然历史博物馆);University of Bath(巴斯大学);University of Chicago(芝加哥大学);Kavli Institute for Cosmological Physics, University of Chicago(芝加哥大学卡弗里宇宙学物理研究所);NSF-Simons AI Institute for the Sky (SkAI)(NSF-Simons 天空人工智能研究所 (SkAI));University of Surrey(萨里大学);Lund University(隆德大学);Carnegie Observatories(卡内基观测站);Carnegie Theoretical Astrophysics Center, Carnegie Observatories(卡内基观测站卡内基理论天体物理学中心);Columbia University(哥伦比亚大学);Center for Astrophysics | Harvard & Smithsonian(哈佛-史密森尼天体物理中心)
Variation of the stellar initial mass function in semi-analytical models III: testing the cosmic ray regulated integrated galaxy-wide initial mass function
The E-MOSAICS project: tracing galaxy formation and assembly with the age-metallicity distribution of globular clusters
我们提出了25个宇宙学放大模拟银河系质量的星系在“建模星团人口大会在宇宙学模拟内鹰”(E-MOSAICS)项目。E-MOSAICS将星团形成、演化和分裂的详细物理模型与EAGLE星系形成模拟相结合。这使得以下的共同形成和共同进化的星系和他们的星团人口,从而实现了长期的承诺,使用球状星团(GC)作为示踪剂的星系形成和组装。模拟结果表明,年龄金属丰度分布的GC人口表现出强烈的星系到星系的变化,导致其演化历史的差异。我们开发了一种形式主义,系统地限制使用GC年龄金属丰度分布星系的组装历史。这些分布的特点是通过13个指标,我们相关的30个数量描述星系形成和组装(如晕属性,形成/组装红移,恒星质量组装时间尺度,星系合并统计),导致20个统计(高度)显着的相关性。GC年龄-金属丰度分布是研究主星系质量增长、金属富集和次合并历史的灵敏探针。没有这样的关系被发现之间的GC和主要的合并,发挥了次主导作用的银河系质量的星系GC的形成。最后,我们展示了GC年龄金属丰度分布如何使宿主星系的合并树的重建,使我们能够确定所有的祖先与质量$M_*\gtrsim10^8$ M $_\odot$的红移$1\leq z\leq2.5$。这些结果表明,宇宙学模拟的共同形成和共同演化的GC和他们的宿主星系成功地解锁的潜力GC作为定量示踪剂的星系形成和组装。
Reconstructing chemical enrichment pathways in disc galaxies: A phylogenetic approach
Pontificia Universidad Católica de Chile(智利天主教 Pontificia 大学);Instituto de Astrofísica, Pontificia Universidad Católica de Chile(智利天主教 Pontificia 大学天体物理研究所);Centro de Astro-ingeniería, Pontificia Universidad Católica de Chile(智利天主教 Pontificia 大学天文工程中心);Millenium Nucleus ERIS(ERIS 千年核);Instituto de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Univesidad Diego Portales(迭戈·波特莱斯大学理工与科学学院天体物理研究所);Research School of Biology, Australian National University(澳大利亚国立大学生物研究学院);Mathematical Sciences Institute, Australian National University(澳大利亚国立大学数学科学研究所);Centre for Astrophysics Research, University of Hertfordshire(赫特福德大学天体物理研究中心)
CROCODILE-DWARF: Assembly and Kinematics of Field Dwarf Galaxies with GADGET4-OSAKA
The University of Osaka(大阪大学);Zhejiang University(浙江大学);Kavli IPMU (WPI), UTIAS, The University of Tokyo(东京大学);University of Nevada, Las Vegas(内华达大学拉斯维加斯分校)
A semi-analytical mock galaxy catalog for the CSST extragalactic surveys from the Jiutian simulations
Shanghai Jiao Tong University(上海交通大学);Tianjin Normal University(天津师范大学);Zhejiang Laboratory(浙江实验室);IFPU - Institute for Fundamental Physics of the Universe(宇宙基础物理研究所(IFPU));National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);University of Chinese Academy of Sciences (UCAS)(中国科学院大学);Beijing Normal University(北京师范大学);Peng Cheng Laboratory(鹏城实验室);Sun Yat-Sen University(中山大学);CSST Science Center for the Guangdong–Hong Kong–Macau Greater Bay Area, SYSU(粤港澳大湾区CSST科学中心(中山大学));Shanghai Normal University(上海师范大学)
Where Giants Dwell: Probing the Environments of Early Massive Quiescent Galaxies
INAF - Astronomical Observatory of Trieste(意大利国家天体物理研究所的里雅斯特天文台);IFPU - Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);Tianjin Normal University(天津师范大学);Institute for Physics, Laboratory for Galaxy Evolution, EPFL(洛桑联邦理工学院星系演化实验室)
Investigating the Spectral Properties of Dual Nuclei in Galaxy Mergers from the GOTHIC survey: Supermassive Black Hole Growth, metal enrichment and Dual AGN
Indian Institute of Astrophysics(印度天体物理研究所);Observatoire de Paris, LERMA, College ’ de France, PSL University, Sorbonne University, CNRS(巴黎天文台,LERMA,法兰西学院,PSL大学,索邦大学,法国国家科学研究中心);Siebel School of Computing and Data Science, University of Illinois at Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校赛贝尔计算与数据科学学院);APPCAIR, Department of CSIS, Birla Institute of Technology & Science(Birla理工学院CSIS系APPCAIR);HappyMonk AI(HappyMonk人工智能);Department of Physics, Indian Institute of Science Education and Research, Bhopal(博帕尔印度科学教育研究系物理系)
Cluster Ages to Reconstruct the Milky Way Assembly (CARMA). V. The chronological merger tree of the Milky Way
Universidade de Vigo(维戈大学);Universidad de La Laguna(拉古纳大学);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);Università degli Studi di Bologna(博洛尼亚大学);INAF – Osservatorio Astronomico di Abruzzo(意大利国家天体物理研究所阿布鲁佐天文台);INFN - Sezione di Pisa, Universitá di Pisa(意大利国家核物理研究所比萨分部,比萨大学);Instituto de Astrofísica de Canarias(加那利天体物理学研究所)
NEFERTITI: Linking early galaxy formation to the assembly of the Milky Way
INAF/Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所阿切特里天文台);Cosmic Dawn Center (DAWN)(宇宙黎明中心);Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯玻尔研究所);Instituto de Astrofísica de Canarias(加那利群岛天体物理研究所);Universidad de La Laguna(拉古纳大学)
RIOJA. A Clumpy Galaxy Assembly at Redshift 6.81 Revealed by JWST
Waseda University(早稻田大学);University of Tsukuba(筑波大学);Flatiron Institute(平顿研究所);The University of Tokyo(东京大学);Nagoya University(名古屋大学);Kyoto University(京都大学);Kavli Institute for the Physics and Mathematics of the Universe (WPI), UT Institute for Advanced Study, The University of Tokyo(东京大学宇宙起源研究核心(WPI)/ 基础宇宙物理学宇宙论前沿中心);Chalmers University of Technology(查尔姆斯理工大学);National Astronomical Observatory of Japan(日本国立天文台);Chiba University(千叶大学);Space Telescope Science Institute (STScI)(太空望远镜科学研究所);Graduate University for Advanced Studies (SOKENDAI)(综合研究大学院大学)
Insights on Metal Enrichment and Environmental Effect at $z\approx5-7$ with JWST ASPIRE/EIGER and Chemical Evolution Model
Cosmic Dawn Center (DAWN)(黎明中心);Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯·玻尔研究所);Tsinghua University(清华大学);The Hebrew University(希伯来大学);University of California, Santa Cruz(加州大学圣克鲁兹分校);University of Arizona(亚利桑那大学);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);Northwestern College(西北学院);Observatoire de Paris, Université PSL, Sorbonne Université, CNRS(巴黎天文台,巴黎文理研究大学,索邦大学,法国国家科学研究中心);University of Michigan(密歇根大学);Huazhong University of Science and Technology(华中科技大学);Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS(中国科学院南京天文光学技术研究所(南美天文中心));Universidad de Chile(智利大学)
The assembly history of NGC 1365 through chemical archaeology
Institute for Theory & Computation, Center for Astrophysics — Harvard & Smithsonian(哈佛-史密森尼天体物理中心理论计算研究所);Research School for Astronomy & Astrophysics, Australian National University(澳大利亚国立大学天文与天体物理研究学院);ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australian National University(澳大利亚国立大学三维全天空天体物理学卓越研究中心);Department of Astronomy, University of Florida(佛罗里达大学天文学系);Department of Astronomy, University of Virginia(弗吉尼亚大学天文学系);Virginia Institute for Theoretical Astronomy, University of Virginia(弗吉尼亚大学理论天文学研究所);The Observatories, Carnegie Institution for Science(卡内基科学机构天文台);Department of Astrophysical Sciences, Princeton University(普林斯顿大学天体物理科学系)
通过分析 NGC 1365 的高分辨率氧丰度并结合 IllustrisTNG 模拟,揭示星系盘、棒和气体盘分别由不同时期合并事件组装的历史,证明化学考古学可追踪星系动力学演化。