JWST/MIRI unveils the stellar component of the GN20 dusty galaxy overdensity at $z$=4.05
A. Crespo Gómez, L. Colina, J. Álvarez-Márquez, A. Bik, L. Boogaard, G. Östlin, F. Peißker, F. Walter, A. Labiano, P. G. Pérez-González, T. R. Greve, G. Wright,… 展开作者
A. Crespo Gómez, L. Colina, J. Álvarez-Márquez, A. Bik, L. Boogaard, G. Östlin, F. Peißker, F. Walter, A. Labiano, P. G. Pérez-González, T. R. Greve, G. Wright, A. Alonso-Herrero, K. I. Caputi, L. Costantin, A. Eckart, M. García-Marín, S. Gillman, J. Hjorth, E. Iani, D. Langeroodi, J. P. Pye, P. Rinaldi, T. Tikkanen, P. van der Werf, P. O. Lagage, E. F. van Dishoeck
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13 pages, 6 figures, 3 tables. Accepted for publication in A&A
Despite the importance of the dusty star-forming galaxies (DSFGs) at $z$>2 for understanding the galaxy evolution in the early Universe, their stellar distributions traced by the near-IR emission were spatially unresolved until the arrival of the JWST. In this work we present, for the first time, a spatially-resolved morphological analysis of the rest-frame near-IR (~1.1-3.5$μ$m) emission in DSFGs traced with the JWST/MIRI. In particular, we study the mature stellar component for the three DSFGs and a Lyman-break galaxy (LBG) present in an overdensity at $z$=4.05. Moreover, we use MIRI images along with UV to (sub)-mm ancillary photometric data to model their SEDs and extract their main physical properties. The sub-arcsec resolution MIRI images have revealed that the stellar component present a wide range of morphologies, from disc-like to compact and clump-dominated structures. These near-IR structures contrast with their UV emission, which is usually diffuse and off-centered. The SED fitting analysis shows that GN20 dominates the total SFR with a value ~2500 $M_\odot$yr$^{-1}$ while GN20.2b has the highest stellar mass in the sample ($M_*$~2$\times$10$^{11}$ $M_\odot$). The two DSFGs classified as LTGs (GN20 and GN20.2a) show high specific SFR (sSFR>30 Gyr$^{-1}$) placing them above the star-forming main sequence (SFMS) at z~4 by >0.5 dex while the ETG (i.e.,GN20.2b) is compatible with the high-mass end of the main sequence. When comparing with other DSFGs in overdensities at $z$~2-7 we observe that our objects present similar SFRs, depletion times and projected separations. Nevertheless, the effective radii computed for GN20 and GN20.2a are up to two times larger than those of isolated galaxies observed in CEERS and ALMA-HUDF at similar redshifts. We interpret this difference in size as an effect of rapid growth induced by the dense environment.
MIDIS: Strong (Hb + [OIII]) and Ha emitters at redshift $z \simeq 7-8$ unveiled with JWST/NIRCam and MIRI imaging in the Hubble eXtreme Deep Field (XDF)
Insights into Galaxy Morphology and Star Formation: Unveiling Filamentary Structures around an Extreme Overdensity at $z \sim 1.5$ Traced by [OII] Emitters
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）
MIRACLE III. JWST/MIRI expose the hidden role of the AGN outflow in NGC 1068
Università degli Studi di Firenze（佛罗伦萨大学）；INAF - Osservatorio Astrofisico di Arcetri（意大利国家天体物理研究所阿切特里天文台）；Center for Physical Sciences and Technology（物理与技术中心）；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 Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México（墨西哥国立自治大学无线电天文学与天体物理学研究所）；European Southern Observatory（欧洲南方天文台）；Universidad de La Laguna（拉帕鲁纳大学）；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空间天体物理学与科学观测站）；Space Telescope Science Institute（太空望远镜科学研究所）；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）；Observatorio Astronómico Nacional（国家天文台）；Scuola Normale Superiore（比萨高等师范学院）
Star-forming blue ETGs in two newly discovered galaxy overdensities in the HUDF at z=1.84 and 1.9: unveiling the progenitors of passive ETGs in cluster cores
COSMOS-3D: Diverse Environments and Hot-dust Signatures among Dusty Star-forming Galaxies at $z$ = 4.9-7.2
Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS（中国科学院南美天文中心，国家天文台）；Departamento de Astronomía, Universidad de Chile（智利大学天文学系）；Instituto de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales（迭戈帕托利亚斯大学工程与科学学院天体物理研究所）；Millennium Nucleus for Galaxies (MINGAL)（星系千年核心计划（MINGAL））；School of Astronomy and Space Sciences, University of Chinese Academy of Sciences（中国科学院大学天文与空间科学学院）；Department of Astronomy, University of Geneva（日内瓦大学天文学系）；Steward Observatory, University of Arizona（亚利桑那大学斯图德天文台）；Space Telescope Science Institute（太空望远镜科学研究所）；Harvard-Smithsonian Center for Astrophysics（哈佛-史密森尼天体物理中心）；IPAC, California Institute of Technology（加州理工学院IPAC）
