The Astrophysical Journal (Jan 2024)
MIDIS: JWST/MIRI Reveals the Stellar Structure of ALMA-selected Galaxies in the Hubble Ultra Deep Field at Cosmic Noon
- Leindert A. Boogaard,
- Steven Gillman,
- Jens Melinder,
- Fabian Walter,
- Luis Colina,
- Göran Östlin,
- Karina I. Caputi,
- Edoardo Iani,
- Pablo Pérez-González,
- Paul van der Werf,
- Thomas R. Greve,
- Gillian Wright,
- Almudena Alonso-Herrero,
- Javier Álvarez-Márquez,
- Marianna Annunziatella,
- Arjan Bik,
- Sarah Bosman,
- Luca Costantin,
- Alejandro Crespo Gómez,
- Dan Dicken,
- Andreas Eckart,
- Jens Hjorth,
- Iris Jermann,
- Alvaro Labiano,
- Danial Langeroodi,
- Romain A. Meyer,
- Thibaud Moutard,
- Florian Peißker,
- John P. Pye,
- Pierluigi Rinaldi,
- Tuomo V. Tikkanen,
- Martin Topinka,
- Thomas Henning
Affiliations
- Leindert A. Boogaard
- ORCiD
- Max Planck Institute for Astronomy , Königstuhl 17, 69117 Heidelberg, Germany ; [email protected]
- Steven Gillman
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; DTU Space, Technical University of Denmark , Elektrovej, Building 328, 2800Kgs. Lyngby, Denmark
- Jens Melinder
- ORCiD
- Department of Astronomy, Stockholm University , Oscar Klein Centre, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Fabian Walter
- ORCiD
- Max Planck Institute for Astronomy , Königstuhl 17, 69117 Heidelberg, Germany ; [email protected]; National Radio Astronomy Observatory , Pete V. Domenici Array Science Center, P.O. Box O, Socorro, NM 87801, USA
- Luis Colina
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Ctra. de Ajalvir km 4, Torrejón de Ardoz, E-28850 Madrid, Spain
- Göran Östlin
- ORCiD
- Department of Astronomy, Stockholm University , Oscar Klein Centre, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Karina I. Caputi
- ORCiD
- Kapteyn Astronomical Institute, University of Groningen , P.O. Box 800, 9700AV Groningen, The Netherlands
- Edoardo Iani
- ORCiD
- Kapteyn Astronomical Institute, University of Groningen , P.O. Box 800, 9700AV Groningen, The Netherlands
- Pablo Pérez-González
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Ctra. de Ajalvir km 4, Torrejón de Ardoz, E-28850 Madrid, Spain
- Paul van der Werf
- ORCiD
- Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden, The Netherlands
- Thomas R. Greve
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; DTU Space, Technical University of Denmark , Elektrovej, Building 328, 2800Kgs. Lyngby, Denmark; Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UK
- Gillian Wright
- ORCiD
- UK Astronomy Technology Centre, Royal Observatory Edinburgh , Blackford Hill, Edinburgh EH9 3HJ, UK
- Almudena Alonso-Herrero
- ORCiD
- Centro de Astrobiología (CAB), CSIC-INTA , Camino Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Madrid, Spain
- Javier Álvarez-Márquez
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Ctra. de Ajalvir km 4, Torrejón de Ardoz, E-28850 Madrid, Spain
- Marianna Annunziatella
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Ctra. de Ajalvir km 4, Torrejón de Ardoz, E-28850 Madrid, Spain
- Arjan Bik
- ORCiD
- Department of Astronomy, Stockholm University , Oscar Klein Centre, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Sarah Bosman
- ORCiD
- Max Planck Institute for Astronomy , Königstuhl 17, 69117 Heidelberg, Germany ; [email protected]; Institute for Theoretical Physics, Heidelberg University , Philosophenweg 12, D-69120, Heidelberg, Germany
- Luca Costantin
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Ctra. de Ajalvir km 4, Torrejón de Ardoz, E-28850 Madrid, Spain
- Alejandro Crespo Gómez
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Ctra. de Ajalvir km 4, Torrejón de Ardoz, E-28850 Madrid, Spain
- Dan Dicken
- ORCiD
- UK Astronomy Technology Centre, Royal Observatory Edinburgh , Blackford Hill, Edinburgh EH9 3HJ, UK
- Andreas Eckart
- ORCiD
- I.Physikalisches Institut der Universität zu Köln , Zülpicher Str. 77, 50937 Köln, Germany; Max Planck Institute for Radiosastronomie , Auf dem Hügel 69, 53121 Bonn, Germany
- Jens Hjorth
- ORCiD
- DARK, Niels Bohr Institute, University of Copenhagen , Jagtvej 128, 2200 Copenhagen, Denmark
- Iris Jermann
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; DTU Space, Technical University of Denmark , Elektrovej, Building 328, 2800Kgs. Lyngby, Denmark
- Alvaro Labiano
- ORCiD
- Centro de Astrobiología (CAB), CSIC-INTA , Camino Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Madrid, Spain; Telespazio UK for the European Space Agency , ESAC, Camino Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Spain
- Danial Langeroodi
- ORCiD
- DARK, Niels Bohr Institute, University of Copenhagen , Jagtvej 128, 2200 Copenhagen, Denmark
- Romain A. Meyer
- ORCiD
- Departement d’Astronomie, University of Geneva , Chemin Pegasi 51, 1290 Versoix, Switzerland
- Thibaud Moutard
- ORCiD
- Aix Marseille Univ , CNRS, CNES, LAM, Marseille, France
- Florian Peißker
- ORCiD
- I.Physikalisches Institut der Universität zu Köln , Zülpicher Str. 77, 50937 Köln, Germany
- John P. Pye
- ORCiD
- School of Physics & Astronomy, Space Research Centre, Space Park Leicester, University of Leicester , 92 Corporation Road, Leicester LE4 5SP, UK
- Pierluigi Rinaldi
- ORCiD
- Kapteyn Astronomical Institute, University of Groningen , P.O. Box 800, 9700AV Groningen, The Netherlands
- Tuomo V. Tikkanen
- School of Physics & Astronomy, Space Research Centre, Space Park Leicester, University of Leicester , 92 Corporation Road, Leicester LE4 5SP, UK
- Martin Topinka
- Dublin Institute for Advanced Studies , Astronomy & Astrophysics Section, 31 Fitzwilliam Place, Dublin 2, Ireland
- Thomas Henning
- ORCiD
- Max Planck Institute for Astronomy , Königstuhl 17, 69117 Heidelberg, Germany ; [email protected]
- DOI
- https://doi.org/10.3847/1538-4357/ad43e5
- Journal volume & issue
-
Vol. 969,
no. 1
p. 27
Abstract
We present deep James Webb Space Telescope (JWST)/Mid-Infrared Instrument (MIRI) F560W observations of a flux-limited, Atacama Large Millimeter/submillimeter Array (ALMA)-selected sample of 28 galaxies at z = 0.5–3.7 in the Hubble Ultra Deep Field (HUDF). The data from the MIRI Deep Imaging Survey (MIDIS) reveal the stellar structure of the HUDF galaxies at rest-frame wavelengths of λ > 1 μ m for the first time. We revise the stellar mass estimates using new JWST photometry and find good agreement with pre-JWST analyses; the few discrepancies can be explained by blending issues in the earlier lower-resolution Spitzer data. At z ∼ 2.5, the resolved rest-frame near-infrared (1.6 μ m) structure of the galaxies is significantly more smooth and centrally concentrated than seen by the Hubble Space Telescope at rest-frame 450 nm (F160W), with effective radii of R _e (F560W) = 1–5 kpc and Sérsic indices mostly close to an exponential (disk-like) profile ( n ≈ 1), up to n ≈ 5 (excluding active galactic nuclei). We find an average size ratio of R _e (F560W)/ R _e (F160W) ≈ 0.7 that decreases with stellar mass. The stellar structure of the ALMA-selected galaxies is indistinguishable from a HUDF reference sample of all galaxies with a MIRI flux density greater than 1 μ Jy. We supplement our analysis with custom-made, position-dependent, empirical point-spread function models for the F560W observations. The results imply that a smoother stellar structure is in place in massive gas-rich, star-forming galaxies at “Cosmic Noon,” despite a more clumpy rest-frame optical appearance, placing additional constraints on galaxy formation simulations. As a next step, matched-resolution, resolved ALMA observations will be crucial to further link the mass- and light-weighted galaxy structures to the dusty interstellar medium.
Keywords
- Galaxy structure
- High-redshift galaxies
- Galaxy evolution
- James Webb Space Telescope
- Millimeter astronomy
