The ionised interstellar medium of DSFGs revealed by JWST/NIRSpec and ALMA: Super-solar metallicity, low ionisation parameters and, typical electron densities
Cosmic Dawn Center (DAWN)（黎明中心）；DTU-Space（丹麦技术大学空间科学部）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Astronomy Centre, University of Sussex（萨塞克斯大学天文学中心）
Steven Gillman, Kei Ito, Francesco Valentino, Gabe Brammer, Pablo Araya Araya, Georgios Magdis, Ugnė Dudzevičiūtė, Aswin P. Vijayan, Minju Lee, Bitten Gullberg,… 展开作者
Steven Gillman, Kei Ito, Francesco Valentino, Gabe Brammer, Pablo Araya Araya, Georgios Magdis, Ugnė Dudzevičiūtė, Aswin P. Vijayan, Minju Lee, Bitten Gullberg, Daniel Ceverino, Andreas L. Faisst, Seiji Fujimoto, Thomas R. Greve, Rashmi Gottumukkala, Chandana Chandrashekhar, Michaela Hirschmann, Shuowen Jin, Christian Kragh Jespersen, Takumi Kakimoto, Mariko Kubo, Peter Laursen, Masato Onodera, Antonio Pensabene, Francesca Rizzo, John R. Weaver, Po-Feng Wu
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19 pages (excluding appendices), 9 figures, Accepted for publication in A&A
We present a detailed study of near-infrared (2-4$\rm μ$m) JWST/NIRSpec spectra of 48 high-redshift ($z=2.53^{+1.32}_{-0.70}$) galaxies detected with ALMA at $>3σ$. From a multi-wavelength SED analysis we establish the sample has a a median stellar mass of $\rm\log_{10}(M_\ast/M_\odot)=10.8\pm0.1$ and dust mass of $\rm\log_{10}(M_{\rm d}/M_\odot)=8.7\pm0.1$, covering a broad range of far-infrared luminosity $\rm (\log_{10}(L_{FIR}/L_\odot)=10.9-12.7)$. The majority of sources show no signs of AGN activity, with 40% having either X-ray counterparts $(\rm L_{Xc}>10^{42}erg/s)$, elevated optical line ratios, or broad (FWHM>800 km/s) H$α$ profiles, although we note this is a lower limit due to the stochastic placement of NIRSpec slits. We establish the sample has a median gas-phase metallicity of $12+\log({\rm O/H})=8.71\pm0.02$, as derived from the [NII]/H$α$ ratio, with the most FIR-luminous galaxies ($\rm\log_{10}(L_{\rm FIR}/L_\odot)>12$) falling $0.15\pm0.03$dex above the fundamental metallicity relation. From the [SII] emission-line doublet ratio, we measure a median electron density of $\log_{10}(n_{\rm e}/{\rm cm}^{-3})=2.53\pm0.07$ consistent with less-massive, star-forming, galaxies at the same epoch. For nine galaxies with [OII] and H$β$ detections (median $\rm\log_{10}(L_{\rm FIR}/L_\odot)=11.81\pm0.15$), we derive a median observed (dust-uncorrected) ionisation parameter of $\rm\log_{10}(U)=-2.84\pm0.06$. Our results indicate that luminous far-infrared galaxies are massive, chemically evolved systems that appear to deviate from the standard dust and metal production equilibrium observed in less obscured galaxies. This study demonstrates the synergy of JWST and ALMA in unveiling the nature of DSFGs, and highlights the need for a NIRSpec survey of uniformly selected, massive, dust-obscured, galaxies to fully characterise their interstellar medium.
A Deep ALMA Survey of the Redshift Distribution of Dusty Star-forming Galaxies
University of Wisconsin–Madison（威斯康星大学麦迪逊分校）；University of Hawaii（夏威夷大学）；Institute for Astronomy, University of Hawaii（夏威夷大学天体物理研究所）；Universidad de Tarapacá（塔拉帕卡大学）
Testing the inference of kinematics from mock JWST NIRSpec/MSA observations of TNG50 galaxies at $z\sim2-6$
Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；Fakultät für Physik und Astronomie, Universität Heidelberg（海德堡大学物理与天文学院）；Space Telescope Science Institute（太空望远镜科学研究所）
Life After the Quasar: Overmassive Black Holes and Remnant Ionised Bubbles in and Around Two z~6.6 Galaxies
University of Geneva（日内瓦大学）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；University College London（伦敦大学学院）；Heidelberg University（海德堡大学）；Max Planck Institut für Astronomie（马克斯·普朗克天文学研究所）；University of Hertfordshire（赫特福德大学）；Aix Marseille Université（艾克斯-马赛大学）；Institute of Science and Technology Austria (ISTA)（奥地利科学和技术研究所）
Predicting ionised gas emission in 3D with SKIRT. I. Framework and validation
Department of Physics and Astronomy, Proeftuinstraat 86 N3, B-9000 Ghent, Belgium（根特大学物理与天文学系）；Department of Physics, The University of Texas at Dallas, Richardson, Texas 75080, USA（德克萨斯大学达拉斯分校物理系）；Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK（剑桥大学卡弗里宇宙学研究所）；Cavendish Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 0HE, UK（剑桥大学卡文迪许实验室）
Decoupling the AGN outflow and star-forming disk kinematics in the nuclear region of NGC 7582 with JWST NIRSpec and MIRI/MRS
University of Oxford（牛津大学）；European University Cyprus（塞浦路斯欧洲大学）；Centro de Astrobiología (CAB), CSIC-INTA（西班牙国家科学技术研究委员会-国家航空航天技术研究所天体生物学中心）；Instituto de Física Fundamental, CSIC（西班牙国家科学研究委员会基础物理研究所）；Instituto de Astrofísica de Canarias（加那利群岛天体物理学研究所）；Universidad de La Laguna（拉帕鲁纳大学）；Universidad Complutense de Madrid（马德里康普顿斯大学）
MSA-3D: Rotation Curves and Dark Matter Fractions at z~0.5-1.7 with JWST/NIRSpec
Max-Planck-Institut für extraterrestrische Physik (MPE)（马克斯·普朗克地外物理学研究所）；International Centre for Radio Astronomy Research, University of Western Australia（西澳大学国际射电天文研究中心）；Centre for Astrophysics & Supercomputing, Swinburne University of Technology（斯威本科技大学天体物理与超级计算中心）；Department of Physics and Astronomy, University of California, Davis（加州大学戴维斯分校物理与天文学系）；Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo（东京大学宇宙学前沿研究 Kavli 研究所）；School of Astronomy and Space Science, University of Chinese Academy of Sciences (UCAS)（中国科学院大学天文与空间科学学院）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University（北京师范大学天文与前沿科学研究院）
