Unveiling the Nature of Infrared Bright, Optically Dark Galaxies with Early JWST Data
L. Barrufet, P. A. Oesch, A. Weibel, G. Brammer, R. Bezanson, R. Bouwens, Y. Fudamoto, V. Gonzalez, R. Gottumukkala, G. Illingworth, K. E. Heintz, B. Holden, I.… 展开作者
L. Barrufet, P. A. Oesch, A. Weibel, G. Brammer, R. Bezanson, R. Bouwens, Y. Fudamoto, V. Gonzalez, R. Gottumukkala, G. Illingworth, K. E. Heintz, B. Holden, I. Labbe, D. Magee, R. P. Naidu, E. Nelson, M. Stefanon, R. Smit, P. van Dokkum, J. Weaver, C. Williams
Over the last few years, both ALMA and Spitzer/IRAC observations have revealed a population of likely massive galaxies at $z>3$ that was too faint to be detected in HST rest-frame ultraviolet imaging. However, due to the very limited photometry for individual galaxies, the true nature of these so-called HST-dark galaxies has remained elusive. Here, we present the first sample of such galaxies observed with very deep, high-resolution NIRCam imaging from the Early Release Science Program CEERS. 30 HST-dark sources are selected based on their red colours across 1.6 $μ$m to 4.4 $μ$m. Their physical properties are derived from 12-band multi-wavelength photometry, including ancillary HST imaging. We find that these galaxies are generally heavily dust-obscured ($A_{V}\sim2$ mag), massive ($\log (M/M_{\odot}) \sim10$), star-forming sources at $z\sim2-8$ with an observed surface density of $\sim0.8$ arcmin$^{-2}$. This suggests that an important fraction of massive galaxies may have been missing from our cosmic census at $z>3$ all the way into the Reionization epoch. The HST-dark sources lie on the main sequence of galaxies and add an obscured star formation rate density (SFRD) of $\mathrm{3.2^{+1.8}_{-1.3} \times 10^{-3} M_{\odot}/yr/Mpc^{3}}$ at $z\sim7$ showing likely presence of dust in the Epoch of Reionization. Our analysis shows the unique power of JWST to reveal this previously missing galaxy population and to provide a more complete census of galaxies at $z=2-8$ based on rest-frame optical imaging.
Unveiling the Cosmic Chemistry II: "Direct" $T_e$-based metallicity of galaxies at 3 $< z <$ 10 with JWST/NIRSpec
Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology(麻省理工学院卡弗里天体物理学与空间研究研究所);University of Kentucky(肯塔基大学);University of Virginia(弗吉尼亚大学)
A JWST, ALMA and VLA survey of the Ophiuchus-A star-forming region: Unveiling hidden dust mass and connecting infrared outflows to their radio origins
University of Leeds(利兹大学);Universitat de Barcelona(巴塞罗那大学);Institut d’Estudis Espacials de Catalunya(加泰罗尼亚空间研究所);National Sun Yat-Sen University(国立中山大学);National Taiwan Normal University(国立台湾师范大学);Jet Propulsion Laboratory, California Institute of Technology(加州理工学院喷气推进实验室)
Unveiling Stellar Feedback and Cloud Structure in the $ρ$ Ophiuchi A Region with ALMA and JWST: Discovery of Substellar Cores, C$^{18}$O Striations, and Protostellar Outflows
Stellar Morphology of Optically Dark or Faint Galaxies at $z>3$ with JWST
University of Geneva(日内瓦大学);Heidelberg University(海德堡大学);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);University of Sussex(萨塞克斯大学);Max-Planck-Institut für Astronomie(马克斯·普朗克天文学研究所)
The Galaxy Activity, Torus, and Outflow Survey (GATOS): N. Unveiling physical processes in local active galaxies. Unsupervised hierarchical clustering of JWST MIRI/MRS observations
Centro de Astrobiología (CAB) CSIC-INTA(天体生物学中心);Universidad Internacional de la Rioja (UNIR)(里奥哈国际大学);Instituto de Radioastrononomía y Astrofísica (IRyA), Universidad Nacional Autónoma de México(墨西哥国立自治大学射电天文与天体物理研究所);Instituto de Física Fundamental, CSIC(基础物理研究所);Kavli Institute for Particle Astrophysics & Cosmology (KIPAC), Stanford University(斯坦福大学卡弗里粒子天体物理学与宇宙学研究所);Instituto de Astrofísica de Canarias(加那利群岛天体物理研究所);Departamento de Astrofísica, Universidad de La Laguna(拉古纳大学天体物理学系);Observatorio Astronómico Nacional (OAN-IGN) - Observatorio de Madrid(国家天文台马德里天文台);Department of Physics and Astronomy, The University of Texas at San Antonio(德克萨斯大学圣安东尼奥分校物理与天文学系);Departmento de Física de la Tierra y Astrofísica, Fac. de CC Físicas, Universidad Complutense de Madrid(马德里康普顿斯大学物理科学学院地球与天体物理学系);Instituto de Física de Partículas y del Cosmos IPARCOS, Fac. de CC Físicas, Universidad Complutense de Madrid(马德里康普顿斯大学物理科学学院粒子与宇宙物理IPARCOS研究所);Observatoire de Paris, LUX, PSL University, Sorbonne Université, CNRS(巴黎天文台);Collège de France(法兰西公学院)
Small hosts, big appetites: unveiling rapid and early low-mass black hole growth in cosmological zoom-in simulations of dwarf galaxies
Institute of Astronomy, University of Cambridge(剑桥大学天文学研究所);Kavli Institute for Cosmology, Cambridge, University of Cambridge(剑桥大学卡弗里宇宙学研究所);Centre for Astrophysics Research, Department of Physics, Astronomy and Mathematics, University of Hertfordshire(赫特福德大学物理、天文与数学系天体物理研究中心);Cavendish Laboratory, University of Cambridge(剑桥大学卡文迪许实验室)
MIDIS: Unveiling the Star Formation History in massive galaxies at $1<z<4.5$ with spectro-photometric analysis
Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心 (CAB),西班牙高等科学研究委员会-国家航空航天技术研究所);Kapteyn Astronomical Institute, University of Groningen(卡佩因天文研究所,格罗宁根大学);European Space Agency (ESA), European Space Astronomy Centre (ESAC)(欧洲空间局 (ESA),欧洲空间天文中心 (ESAC));Steward Observatory, University of Arizona(斯图尔德天文台,亚利桑那大学);Max Planck Institut für Astronomie(马克斯·普朗克天文学研究所);Department of Astronomy, University of Geneva(日内瓦大学天文学系);Department of Astronomy, Oskar Klein Centre, Stockholm University(奥斯卡·克莱因中心天文学系,斯德哥尔摩大学);DTU Space, Technical University of Denmark(丹麦技术大学空间研究所);Cosmic Dawn Center (DAWN)(宇宙黎明中心 (DAWN));DARK, Niels Bohr Institute, University of Copenhagen(DARK研究中心,尼尔斯·玻尔研究所,哥本哈根大学);I.Physikalisches Institut der Universität zu Köln(科隆大学第一物理研究所);Leiden Observatory, Leiden University(莱顿天文台,莱顿大学);European Space Agency, Space Telescope Science Institute(欧洲空间局,太空望远镜科学研究所);UK Astronomy Technology Centre, Royal Observatory Edinburgh(英国天文学技术中心,爱丁堡皇家天文台);Dept. of Physics and Astronomy, University College London(伦敦大学学院物理与天文学系)
Tracing the earliest stages of star and cluster formation in 19 nearby galaxies with PHANGS-JWST and HST: compact 3.3 $μ$m PAH emitters and their relation to the optical census of star clusters
Unveiling hidden active nuclei in MaNGA star-forming galaxies with HeII$λ$4686 line emission
星云HeII $λ$ 4686 γ ~谱线发射对于揭示活跃星系核(AGN)是有用的,这些活动星系核位于恒星形成活跃的(SF)星系中,通常被标准的BPT分类所遗漏。在这里,我们采用HeII诊断,以确定隐藏的活动星系核在本地宇宙中使用的第一次空间分辨的数据,从数据发布15映射附近的Galerkin在APO调查(MANGA DR 15)。通过结合HeII和BPT诊断的结果,我们总共选择了459个活动星系核候选者($\sim$ 10%在MaNGA DR 15),其中27个仅由HeII图确定为活动星系核。只有HeII的活动星系核由大质量(M $_*\gtrsim10^{10}$ M $_{\odot}$)SF主序星星系组成,平均亮度低于BPT选择的活动星系核。由于HeII线模糊,我们重新审视我们的人口普查会计不完整的影响,由于HeII的灵敏度限制的MANGA。因此,我们得到的MANGA中活动星系核的比例(11%)比仅BPT普查(9%)增加了,对于质量比$10^{10}$ M $_{\odot}$更大的星系,这一比例进一步增加到14%;有趣的是,在SF主序星上,这一比例增加了约2倍。大量的活动星系核在SF星系点显着的,同时代的恒星形成和黑洞吸积,一致的流体动力学模拟的结果和淬火方案的重要影响。鉴于探索前所未有的高红移与JWST和新的地面设施,通过新的发射线诊断重新审视标准的BPT分类是发现活动…
Unveiling the weak radio quasar population at z $\geq$ 4
我们对以$z\geq4$光学识别的高红移类星体为中心的20厘米射电天空空场微弱图像(FIRST)巡天图进行了图像叠加,以揭示这些活动星系核(AGN)中隐藏的$μ$ Jy射电辐射。$2229$光学鉴定活动星系核全样本的中值叠加程序揭示了一个积分通量密度为52 $~μ$ Jy的未分辨点源,信噪比为$\sim10$。我们共同添加的个人图像中心像素,以估计在$1.4~$ GHz的特征单色无线电功率考虑各种值的无线电频谱指数,揭示了无线电人口与$P_\mathrm{1.4GHz}\sim10^{24}~$ W Hz $^{-1}$。假设所有的射电辐射都来自于宿主星系核区的恒星形成(SF)活动,我们得到了特征恒星形成速率的上限,即$\sim4200~$ M $_\odot~$ yr $^{-1}$。FIRST图像的角分辨率不足以区分SF和AGN在这些红移处的射电辐射起源。然而,从文献中的个别来源的属性的比较表明,一个混合的性质是可能的。未来的甚长基线射电干涉测量观测和超深平方公里阵列巡天可望具有足够的灵敏度来探测和分辨宿主星系的中心$1-10~$ kpc区域,从而区分SF和AGN相关的辐射。
Insights into Galaxy Morphology and Star Formation: Unveiling Filamentary Structures around an Extreme Overdensity at $z \sim 1.5$ Traced by [OII] Emitters
Cloud-Cloud Collisions Induce Filament-Mediated Super Star Cluster Formation in the Antennae Overlap Region: Evidence from ALMA and JWST
Shunan University(周南大学);Shizuoka University(静冈大学);National Astronomical Observatory of Japan, National Institutes of Natural Sciences(日本国立天文台,国立自然科学研究院);The Graduate University for Advanced Studies, SOKENDAI(综合研究大学院大学);Kagawa University(香川大学);Gifu University(岐阜大学)
Unveiling the (in)consistencies among the galaxy stellar mass function, star formation histories, satellite abundances and intracluster light from a semi-empirical perspective
Optically thick winds of very massive stars suppress intermediate-mass black hole formation
Max-Planck-Institut für Astronomie(马克斯·普朗克天文学研究所);Universität Heidelberg, Zentrum für Astronomie (ZAH), Institut für Theoretische Astrophysik(海德堡大学天体物理中心(ZAH)理论天体物理研究所);Universität Heidelberg, Interdiszipliäres Zentrum für Wissenschaftliches Rechnen(海德堡大学跨学科科学计算中心);Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova(帕多瓦大学伽利略·伽利莱物理与天文学系);INFN, Sezione di Padova(意大利国家核物理研究所帕多瓦分部);Gran Sasso Science Institute (GSSI)(格兰萨索科学研究所);INFN, Laboratori Nazionali del Gran Sasso(意大利国家核物理研究所格兰萨索国家实验室);Departament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos, Universitat de Barcelona(巴塞罗那大学量子物理与天体物理学系宇宙科学研究所)
Unveiling the physical properties and kinematics of molecular gas in the Antennae Galaxies (NGC 4038/9) through high resolution CO (J = 3-2) observations