The recent JWST observation of the Firefly Sparkle at $z=8.3$ offers a unique opportunity to link the high- and the low-$z$ Universe. Indeed, the claim of it being a Milky Way (MW) type of assembly at the cosmic dawn opens the possibility of interpreting the observation with locally calibrated galaxy-formation models. Here, we use the MW-evolution model NEFERTITI to perform forward modeling of our Galaxy's progenitors at high-$z$. We build a set of mock spectra for the MW building blocks to make predictions for JWST and to interpret the Firefly Sparkle observation. First, we find that the most massive MW progenitor becomes detectable in a deep survey like JADES from $z\approx 8.2$, meaning that we could have already observed MW-analogs that still need interpretation. Second, we provide predictions for the number of detectable MW progenitors in lensed surveys like CANUCS, and interpret the Firefly Sparkle as a group of MW building blocks. Both the number of detections and the observed NIRCam photometry are consistent with our predictions. By identifying the MW progenitors whose mock photometry best fits the data, we find bursty and extended star-formation histories, lasting $> 150-300$~Myr, and estimate their properties: $M_h \approx 10^{8-9} \, M_{\odot}$, $ M_\star \approx 10^{6.2-7.5}\, M_{\odot}$, $ SFR \approx 0.04-0.20 \, M_{\odot} yr^{-1}$ and $ Z_{gas} \approx 0.04 - 0.24 \, Z_{\odot}$. Uncovering the properties of MW-analogs at cosmic dawn by combining JWST observations and locally-constrained models, will allow us to understand our Galaxy's formation, linking the high- and low-$z$ perspectives.
Beyond the stars: Linking H$α$ sizes, kinematics, and star formation in galaxies at $z\approx 4-6$ with JWST grism surveys and $\texttt{geko}$
Kavli Institute for Cosmology, University of Cambridge(剑桥大学卡弗里宇宙学研究所);Cavendish Laboratory, University of Cambridge(剑桥大学卡文迪许实验室);Department of Astronomy and Astrophysics, University of California, Santa Cruz(加州大学圣克鲁斯分校天文学与天体物理学系);Scuola Normale Superiore(比萨高等师范学院);Steward Observatory, University of Arizona(亚利桑那大学斯蒂沃德天文台);Department of Physics, University of Oxford(牛津大学物理系)
The descendants of $z \gtrsim 10$ JWST galaxies in the COLIBRE simulations
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);Durham University(杜伦大学);Leiden University(莱顿大学);Leibniz-Institut für Astrophysik Potsdam (AIP)(波茨坦阿斯特罗物理研究所)
Dust in the very metal-poor galaxy Sextans A with JWST. I: Characterizing the evolved stellar population of Sextans A based on JWST observations and stellar evolution models
Università degli Studi Roma Tre(罗马第三大学);INAF - Osservatorio Astronomico di Roma(罗马天文台(意大利国家天体物理研究所));Space Telescope Science Institute(太空望远镜科学研究所);Open University(开放大学);Keele University(基尔大学);Instituto de Astrofísica de Canarias(加那利天体物理学研究所);Universidad de La Laguna(拉古纳大学);Koninklijke Sterrenwacht van België(比利时皇家天文台);National Centre for Nuclear Research(国家核研究中心)
JWST reveals a highly ionized nebula powered by an ultraluminous X-ray source with a massive black hole in the metal-poor galaxy Holmberg II
Space Telescope Science Institute(太空望远镜科学研究所);AURA for ESA, Space Telescope Science Institute(欧洲航天局天文研究联盟,太空望远镜科学研究所);Institut für Physik und Astronomie, Universität Potsdam(波茨坦大学物理与天文学研究所);Sterrenkundig Observatorium, Universiteit Gent(根特大学天文台);Institute of Space Sciences (ICE, CSIC)(空间科学研究所(地球物理与化学研究所,西班牙国家研究委员会));Centro de Astrobiología – Departamento de Astrofísica (CSIC-INTA)(天体生物学中心 - 天体物理学系(西班牙国家研究委员会-国家航空航天技术研究所))
本研究通过JWST光谱观测,首次在ULX Ho II X-1周围探测到[Ne V]和[Ne VI],直接证实该ULX关联低金属丰度星系中的高度电离星云,其电离由吸积黑洞驱动,电离条件呈各向异性。
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)
Little Red Dots and their Progenitors from Direct Collapse Black Holes
University of Texas, Austin(德克萨斯大学奥斯汀分校);Universität Heidelberg(海德堡大学);Weinberg Institute for Theoretical Physics(温伯格理论物理研究所);University of Toronto(多伦多大学);Dunlap Institute for Astronomy and Astrophysics(邓普勒天文与天体物理研究所);Space Telescope Science Institute(太空望远镜科学研究所);Colby College(科尔比学院)
The evolution of high-z proto-star clusters into local globular clusters
Indiana University(印第安纳大学);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);Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences(波兰科学院尼古拉·哥白尼天文学中心)
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)
Probing the earliest phases in the formation of massive galaxies with simulated HST+JWST imaging data from Illustris
我们使用的Illustris-1模拟探索的$\textit{Hubble}$和$\textit{James Webb Space Telescope}$数据的能力,分析在高红移星系的恒星种群,利用相结合的深度,空间分辨率和波长覆盖范围。为此,我们使用模拟的宽带ACS,WFC 3和NIRCam数据和2维恒星布居合成(2D-SPS)导出的综合恒星形成历史(SFH)的大质量(M $_{\ast}>10^{10}\,$ M $_{\odot}$)模拟星系在$1<z<4$演变成一个本地M $_{\ast}>10^{11}\,$ M $_{\odot}$星系。特别是,我们探索的潜力HST和JWST数据集达到的深度类似的CANDELS和正在进行的CEERS观测,分别,并集中在确定该数据集的能力,为本地M $_{\ast}>10^{11}\,$ M $_{\odot}$星系的SFH的第一集通过研究他们的祖先在$z>1$。本文提出的2D-SPS方法已经过校准,可以稳健地恢复大质量星系中第一次恒星形成事件发生的宇宙时间,即,他们的综合SFH的第一阶段。特别是,我们讨论的时间时,第一个1%至50%的总恒星质量形成的模拟。我们证明,我们可以恢复这些年龄与典型的中位数系统偏移小于5%,分散在20%-30%。根据我们对Illustris数据的测量,我们能够恢复本地M $_{\ast}>10^{11}\,$ M…
Aether-SHELLQs: JWST integral-field spectroscopy of candidate obscured quasars at z ~ 6
Ehime University(爱媛大学);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);Gemini Observatory, NSF’s NOIRLab(吉米尼天文台,美国国家光学红外天文研究实验室);Max Planck Institut für Astronomie(马克斯·普朗克天文学研究所);Max-Planck-Institut für Astrophysik(马克斯·普朗克天体物理学研究所);Massachusetts Institute of Technology(麻省理工学院);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);Instituto de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales(迭戈·波特莱斯大学工程与科学学院天体物理研究所);Princeton University(普林斯顿大学);Observatoire de Paris, PSL University, 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)
JOYS: Linking the molecular ice and gas-phase composition towards the high-mass hot core IRAS 18089-1732
Max Planck Institute for Astronomy(马克斯·普朗克天文学研究所);Leiden University(莱顿大学);Laboratory for Astrophysics, Leiden Observatory, Leiden University(莱顿大学莱登天文台天体物理实验室);Max Planck Institut für Extraterrestrische Physik (MPE)(马克斯·普朗克地外物理学研究所);European Southern Observatory(欧洲南方天文台);INAF – Osservatorio Astronomico di Capodimonte(意大利国家天体物理研究所卡波迪蒙特天文台)
A Bending in the Size-mass Relation of Star-forming Galaxies across $0.5 < z < 6.0$ at a Critical Stellar Mass of $10^{10}M_\odot$ Revealed by JWST
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, Ministry of Education(南京大学现代天文与天体物理教育部重点实验室)
BlackTHUNDER: Shedding light on a dormant and extreme little red dot at z=8.50
University of Cambridge(剑桥大学);Kavli Institute for Cosmology, University of Cambridge(剑桥大学卡弗里宇宙学研究所);Cavendish Laboratory, University of Cambridge(剑桥大学卡文迪许实验室);Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理学研究所);Department of Physics and Astronomy, University College London(伦敦大学学院物理与天文系);Università degli Studi di Firenze(佛罗伦萨大学);Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze(佛罗伦萨大学物理与天文系);INAF - Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所阿切尔蒂天文台)
Two Exciting High-redshift Galaxy Candidates Turn Out to Be Two Exciting Ultra-cool Brown Dwarfs
University of Ljubljana(卢布尔雅那大学);University of California Davis(加州大学戴维斯分校);NRC Herzberg(赫茨堡国家研究委员会);Dunlap Institute for Astronomy and Astrophysics(邓普天文学与天体物理研究所);Institut Trottier de recherche sur les exoplanètes and Département de Physique, Université de Montréal(蒙特利尔大学特鲁瓦耶系外行星研究所及物理系);Scuola Normale Superiore(比萨高等师范学院);University of Arizona(亚利桑那大学)
Search for High-Ionization Nebular Emission (SHINE). I. A Systematically Selected [Ne V] Sample at z > 3 with JWST/NIRSpec PRISM
George Mason University(乔治梅森大学);Observatoire de Genève, Université de Genève(日内瓦天文台,日内瓦大学);CNRS, IRAP(法国国家科学研究中心,天体物理研究所);Department of Astronomy, University of Geneva(日内瓦大学天文学系)
Too many protoclusters? Reconciling the overabundance of cluster progenitors within the first billion years of the Universe
University of Geneva(日内瓦大学);University of Nottingham(诺丁汉大学);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);Kavli Institute for Cosmology, University of Cambridge(剑桥大学卡弗里宇宙学研究所);Cavendish Laboratory, University of Cambridge(剑桥大学卡文迪许实验室);The Pennsylvania State University(宾夕法尼亚州立大学);DTU Space, Technical University of Denmark(丹麦技术大学空间研究所)
Testing the near-far connection with FIRE simulations: inferring the stellar mass function of the proto-Local Group at z > 6 using the fossil record of present-day galaxies
Fading into darkness: A weak mass ejection and low-efficiency fallback accompanying black hole formation in M31-2014-DS1
Columbia University(哥伦比亚大学);Flatiron Institute(平顿研究所);Center for Astrophysics — Harvard & Smithsonian(哈佛-史密森尼天体物理中心);California Institute of Technology(加州理工学院);University of Michigan(密歇根大学);Massachusetts Institute of Technology(麻省理工学院)
Stardust Galaxies at z>9: A Dust-Origin Transition Behind the Excess of UV-Bright Galaxies
Aix Marseille Université(艾克斯-马赛大学);Waseda University(早稻田大学);Nagoya University(名古屋大学);the Institute of Statistical Mathematics(统计数学研究所);David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto(多伦多大学戴维·A·邓普尔天文与天体物理系);National Optical-Infrared Astronomy Research Laboratory(国家光学红外天文研究实验室);University of Hertfordshire(赫特福德大学);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);Center for Computational Astrophysics, Flatiron Institute(平顿研究所计算天体物理学中心)