CEERS: MIRI deciphers the spatial distribution of dust-obscured star formation in galaxies at $0.1<z<2.5$
Benjamin Magnelli, Carlos Gómez-Guijarro, David Elbaz, Emanuele Daddi, Casey Papovich, Lu Shen, Pablo Arrabal Haro, Micaela B. Bagley, Eric F. Bell, Véronique B… 展开作者
Benjamin Magnelli, Carlos Gómez-Guijarro, David Elbaz, Emanuele Daddi, Casey Papovich, Lu Shen, Pablo Arrabal Haro, Micaela B. Bagley, Eric F. Bell, Véronique Buat, Luca Costantin, Mark Dickinson, Steven L. Finkelstein, Jonathan P. Gardner, Eric F. Jiménez-Andrade, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Yipeng Lyu, Pablo G. Pérez-González, Nor Pirzkal, Sandro Tacchella, Alexander de la Vega, Stijn Wuyts, Guang Yang, L. Y. Aaron Yung, Jorge Zavala
[Abridged] We combined HST images from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey with JWST images from the Cosmic Evolution Early Release Science (CEERS) survey to measure the stellar and dust-obscured star formation distributions of a mass-complete ($>10^{10}M_\odot$) sample of 69 star-forming galaxies (SFGs) at $0.1<z<2.5$. Rest-mid-infrared (rest-MIR) morphologies (sizes and Sérsic indices) were determined using their sharpest Mid-InfraRed Instrument (MIRI) images dominated by dust emission. Rest-MIR Sérsic indices were only measured for the brightest MIRI sources ($S/N>75$; 35 galaxies). At lower $S/N$, simulations show that simultaneous measurements of the size and Sérsic index become unreliable. We extended our study to fainter sources ($S/N>10$; 69 galaxies) by fixing their Sérsic index to unity. The Sérsic index of bright galaxies ($S/N>75$) has a median value of 0.7, which, together with their axis ratio distribution, suggests a disk-like morphology in the rest-MIR. Galaxies above the main sequence (MS; i.e., starbursts) have rest-MIR sizes that are a factor 2 smaller than their rest-optical sizes. The median rest-optical to rest-MIR size ratio of MS galaxies increases with stellar mass, from 1.1 at $10^{9.8}M_\odot$ to 1.6 at $10^{11}M_\odot$. This mass-dependent trend resembles the one found in the literature between the rest-optical and rest-near-infrared sizes of SFGs, suggesting that it is due to radial color gradients affecting rest-optical sizes and that the sizes of the stellar and star-forming components of SFGs are, on average, consistent at all masses. There is, however, a small population of SFGs (15%) with a compact star-forming component embedded in a larger stellar structure. This could be the missing link between galaxies with an extended stellar component and those with a compact stellar component, the so-called blue nuggets.
The JWST MIRI instrument will revolutionize extragalactic astronomy with unprecedented sensitivity and angular resolution in mid-IR. Here, we assess the potential of MIRI photometry to constrain galaxy properties in the Cosmic Evolution Early Release Science (CEERS) survey. We derive estimated MIRI fluxes from the spectral energy distributions (SEDs) of real sources that fall in a planned MIRI pointing. We also obtain MIRI fluxes for hypothetical AGN-galaxy mixed models varying the AGN fractional contribution to the total IR luminosity ($\rm frac_{AGN}$). Based on these model fluxes, we simula…
Ultra High-Redshift or Closer-by, Dust-Obscured Galaxies? Deciphering the Nature of Faint, Previously Missed F200W-Dropouts in CEERS
Università di Padova（帕多瓦大学）；INAF, Osservatorio Astronomico di Padova（意大利国家天体物理研究所帕多瓦天文台）；Department of Astronomy, The University of Texas at Austin（德克萨斯大学奥斯汀分校天文学系）；NSF’s National Optical-Infrared Astronomy Research Laboratory（美国国家光学-红外天文研究实验室）；INAF, Osservatorio Astronomico di Roma（意大利国家天体物理研究所罗马天文台）；Department of Physics and Astronomy, Texas A&M University（得克萨斯农工大学物理与天文系）
CEERS Key Paper IV: Galaxies at $4 < z < 9$ are Bluer than They Appear -- Characterizing Galaxy Stellar Populations from Rest-Frame $\sim 1$ micron Imaging
A UV-Luminous Galaxy at z=11 with Surprisingly Weak Star Formation Activity
The University of Tokyo（东京大学）；Centro de Astrobiología (CAB), CSIC-INTA（天体生物学中心 (CAB)，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）；National Astronomical Observatory of Japan（日本国立天文台）；SOKENDAI (The Graduate University for Advanced Studies)（综合研究大学院大学）；Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo（东京大学 Kavli宇宙物理数学研究所 (WPI)）；Center for Computational Astrophysics, Flatiron Institute（平顿研究所计算天体物理学中心）；Kanazawa University（金泽大学）
Impact of stochastic star-formation histories and dust on selecting quiescent galaxies with JWST photometry
SISSA（国际高等研究学院）；Department of Physics & Astronomy, University of British Columbia（不列颠哥伦比亚大学物理与天文学系）；Department of Astronomy and Physics, Saint Mary’s University（圣玛丽大学天文与物理系）；Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；INAF, OAPD（意大利国家天体物理研究所帕多瓦天文台）；Dipartimento di Fisica e Astronomia, Università di Bologna（博洛尼亚大学物理与天文学系）；Instituto de Astrofísica de Canarias（加那利天体物理研究所）；Departamento de Astrofísica, Universidad de La Laguna（拉帕尔马大学天体物理学系）；Kavli Institute for Cosmology Cambridge（剑桥卡弗里宇宙学研究所）；Institute of Astronomy, University of Cambridge（剑桥大学天体物理研究所）；Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut（海德堡大学天文学中心天文计算研究所）；Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University（亚当·密茨凯维奇大学物理学院天文观测研究所）；Institute of Astronomy, Fac（天体物理研究所）
In recent years, significant growth in the amount of data available to astronomers has opened up the possibility to uncover fundamental correlations, linking the dust component of a galaxy to its star formation rate (SFR). In this paper, we re-examine these correlations, investigating the origin of the observed scatter, and the ability of the James Webb Space Telescope (JWST) to explore such relations in the early Universe. We defined a sample of about 800 normal star-forming galaxies with photometries in the range of 0.15 < $λ$ < 500 microns and analysed them with different spectral energy di…
The Stellar Populations and Rest-Frame Colors of Star-Forming Galaxies at $z \approx 8$: Exploring the Impact of Filter Choice and Star Formation History Assumption with JADES
We present a new prospective analysis of deep multi-band imaging with the James Webb Space Telescope (JWST). In this work, we investigate the recovery of high-redshift $5<z<12$ galaxies through extensive image simulations of accepted JWST programs such as CEERS in the EGS field and HUDF GTO. We introduce complete samples of $\sim300,000$ galaxies with stellar masses $\log(M_*/M_\odot)>6$ and redshifts $0<z<15$, as well as galactic stars, into realistic mock NIRCam, MIRI and HST images to properly describe the impact of source blending. We extract the photometry of the detected sources as in re…
