The Astrophysical Journal (Jan 2024)
JWST and ALMA Discern the Assembly of Structural and Obscured Components in a High-redshift Starburst Galaxy
- Zhaoxuan Liu,
- John D. Silverman,
- Emanuele Daddi,
- Annagrazia Puglisi,
- Alvio Renzini,
- Boris S. Kalita,
- Jeyhan S. Kartaltepe,
- Daichi Kashino,
- Giulia Rodighiero,
- Wiphu Rujopakarn,
- Tomoko L. Suzuki,
- Takumi S. Tanaka,
- Francesco Valentino,
- Irham Taufik Andika,
- Caitlin M. Casey,
- Andreas Faisst,
- Maximilien Franco,
- Ghassem Gozaliasl,
- Steven Gillman,
- Christopher C. Hayward,
- Anton M. Koekemoer,
- Vasily Kokorev,
- Erini Lambrides,
- Minju M. Lee,
- Georgios E. Magdis,
- Santosh Harish,
- Henry Joy McCracken,
- Jason Rhodes,
- Marko Shuntov,
- Xuheng Ding
Affiliations
- Zhaoxuan Liu
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo , Chiba, 277-8583, Japan ; [email protected]; Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan
- John D. Silverman
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo , Chiba, 277-8583, Japan ; [email protected]; Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan; Center for Astrophysical Sciences, Department of Physics & Astronomy, Johns Hopkins University , Baltimore, MD 21218, USA
- Emanuele Daddi
- ORCiD
- Université Paris-Saclay, Université Paris Cité , CEA, CNRS, AIM, F-91191 Gif-sur-Yvette, France
- Annagrazia Puglisi
- ORCiD
- School of Physics and Astronomy, University of Southampton , Highfield SO17 1BJ, UK
- Alvio Renzini
- ORCiD
- INAF— Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
- Boris S. Kalita
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo , Chiba, 277-8583, Japan ; [email protected]; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan; Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871, People’s Republic of China
- Jeyhan S. Kartaltepe
- ORCiD
- Laboratory for Multiwavelength Astrophysics, School of Physics and Astronomy, Rochester Institute of Technology , 84 Lomb Memorial Drive, Rochester, NY 14623, USA
- Daichi Kashino
- ORCiD
- National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
- Giulia Rodighiero
- ORCiD
- INAF— Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy; Department of Physics and Astronomy, Università degli Studi di Padova , Vicolo dell’Osservatorio 3, I-35122, Padova, Italy
- Wiphu Rujopakarn
- ORCiD
- Department of Physics, Faculty of Science, Chulalongkorn University , 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand; National Astronomical Research Institute of Thailand , 260 Moo 4, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand
- Tomoko L. Suzuki
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo , Chiba, 277-8583, Japan ; [email protected]; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan
- Takumi S. Tanaka
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo , Chiba, 277-8583, Japan ; [email protected]; Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan
- Francesco Valentino
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N, Denmark
- Irham Taufik Andika
- ORCiD
- Technical University of Munich , TUM School of Natural Sciences, Department of Physics, James-Franck-Str. 1, D-85748 Garching, Germany; Max-Planck-Institut für Astrophysik , Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
- Caitlin M. Casey
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; The University of Texas at Austin , 2515 Speedway Boulevard Stop C1400, Austin, TX 78712, USA
- Andreas Faisst
- ORCiD
- Caltech/IPAC , 1200 E. California Boulevard, Pasadena, CA 91125, USA
- Maximilien Franco
- ORCiD
- The University of Texas at Austin , 2515 Speedway Boulevard Stop C1400, Austin, TX 78712, USA
- Ghassem Gozaliasl
- ORCiD
- Department of Computer Science, Aalto University , PO Box 15400, Espoo, FI-00 076, Finland; Department of Physics, Faculty of Science, University of Helsinki , 00014-Helsinki, Finland
- Steven Gillman
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; DTU Space, Technical University of Denmark , Elektrovej, Building 328, 2800, Kgs. Lyngby, Denmark
- Christopher C. Hayward
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA
- Anton M. Koekemoer
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Vasily Kokorev
- ORCiD
- Kapteyn Astronomical Institute, University of Groningen , P.O. Box 800, 9700AV Groningen, The Netherlands
- Erini Lambrides
- ORCiD
- NASA Goddard Space Flight Center , Code 662, Greenbelt, MD 20771, USA
- Minju M. Lee
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; DTU Space, Technical University of Denmark , Elektrovej, Building 328, 2800, Kgs. Lyngby, Denmark
- Georgios E. Magdis
- ORCiD
- Cosmic Dawn Center (DAWN) , Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N, Denmark; DTU Space, Technical University of Denmark , Elektrovej, Building 328, 2800, Kgs. Lyngby, Denmark
- Santosh Harish
- ORCiD
- Laboratory for Multiwavelength Astrophysics, School of Physics and Astronomy, Rochester Institute of Technology , 84 Lomb Memorial Drive, Rochester, NY 14623, USA
- Henry Joy McCracken
- ORCiD
- Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université , 98 bis boulevard Arago, F-75014 Paris, France
- Jason Rhodes
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Marko Shuntov
- ORCiD
- Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université , 98 bis boulevard Arago, F-75014 Paris, France
- Xuheng Ding
- ORCiD
- Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, Tokyo Institutes for Advanced Study, University of Tokyo , Chiba, 277-8583, Japan ; [email protected]; Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan
- DOI
- https://doi.org/10.3847/1538-4357/ad4096
- Journal volume & issue
-
Vol. 968,
no. 1
p. 15
Abstract
We present observations and analysis of the starburst PACS-819 at z = 1.45 ( M _* = 10 ^10.7 M _⊙ ), using high-resolution (0.″1; 0.8 kpc) Atacama Large Millimeter/submillimeter Array (ALMA) and multiwavelength JWST images from the COSMOS-Web program. Dissimilar to Hubble Space Telescope (HST) ACS images in the rest-frame UV, the redder NIRCam and MIRI images reveal a smooth central mass concentration and spiral-like features, atypical for such an intense starburst. Through dynamical modeling of the CO ( J = 5–4) emission with ALMA, PACS-819 is rotation dominated and thus consistent with having a disk-like nature. However, kinematic anomalies in CO and asymmetric features in the bluer JWST bands (e.g., F150W) support a more disturbed nature likely due to interactions. The JWST imaging further enables us to map the distribution of stellar mass and dust attenuation, thus clarifying the relationships between different structural components not discernible in the previous HST images. The CO ( J = 5–4) and far-infrared dust continuum emission are cospatial with a heavily obscured starbursting core (<1 kpc) that is partially surrounded by much less obscured star-forming structures including a prominent arc, possibly a tidally distorted dwarf galaxy, and a massive clump (detected in CO), likely a recently accreted low-mass satellite. With spatially resolved maps, we find a high molecular gas fraction in the central area reaching ∼3 ( M _gas / M _* ) and short depletion times ( M _gas /SFR ∼ 120 Myr, where SFR is star formation rate) across the entire system. These observations provide insights into the complex nature of starbursts in the distant Universe and underscore the wealth of complementary information from high-resolution observations with both ALMA and JWST.
Keywords
