The Astrophysical Journal (Jan 2024)
JADES: Resolving the Stellar Component and Filamentary Overdense Environment of Hubble Space Telescope (HST)-dark Submillimeter Galaxy HDF850.1 at z = 5.18
- Fengwu Sun,
- Jakob M. Helton,
- Eiichi Egami,
- Kevin N. Hainline,
- George H. Rieke,
- Christopher N. A. Willmer,
- Daniel J. Eisenstein,
- Benjamin D. Johnson,
- Marcia J. Rieke,
- Brant Robertson,
- Sandro Tacchella,
- Stacey Alberts,
- William M. Baker,
- Rachana Bhatawdekar,
- Kristan Boyett,
- Andrew J. Bunker,
- Stephane Charlot,
- Zuyi Chen,
- Jacopo Chevallard,
- Emma Curtis-Lake,
- A. Lola Danhaive,
- Christa DeCoursey,
- Zhiyuan Ji,
- Jianwei Lyu,
- Roberto Maiolino,
- Wiphu Rujopakarn,
- Lester Sandles,
- Irene Shivaei,
- Hannah Übler,
- Chris Willott,
- Joris Witstok
Affiliations
- Fengwu Sun
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Jakob M. Helton
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Eiichi Egami
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Kevin N. Hainline
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- George H. Rieke
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Christopher N. A. Willmer
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Daniel J. Eisenstein
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
- Benjamin D. Johnson
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
- Marcia J. Rieke
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Brant Robertson
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
- Sandro Tacchella
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Stacey Alberts
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- William M. Baker
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Rachana Bhatawdekar
- ORCiD
- European Space Agency (ESA), European Space Astronomy Centre (ESAC) , Camino Bajo del Castillo s/n, E-28692 Villanueva de la Cañada, Madrid, Spain; European Space Agency , ESA/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands
- Kristan Boyett
- ORCiD
- School of Physics, University of Melbourne , Parkville 3010, VIC, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia
- Andrew J. Bunker
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
- Stephane Charlot
- ORCiD
- Sorbonne Université , CNRS, UMR 7095, Institut d’Astrophysique de Paris, 98 bis bd Arago, F-75014 Paris, France
- Zuyi Chen
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Jacopo Chevallard
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
- Emma Curtis-Lake
- ORCiD
- Centre for Astrophysics Research, Department of Physics, Astronomy and Mathematics, University of Hertfordshire , Hatfield AL10 9AB, UK
- A. Lola Danhaive
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Christa DeCoursey
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Zhiyuan Ji
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Jianwei Lyu
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Roberto Maiolino
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory—Astrophysics Group, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK; Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UK
- Wiphu Rujopakarn
- ORCiD
- National Astronomical Research Institute of Thailand , Don Kaeo, Mae Rim, Chiang Mai 50180, Thailand; Department of Physics, Faculty of Science, Chulalongkorn University , 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
- Lester Sandles
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Irene Shivaei
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA ; [email protected]
- Hannah Übler
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Chris Willott
- ORCiD
- NRC Herzberg , 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
- Joris Witstok
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- DOI
- https://doi.org/10.3847/1538-4357/ad07e3
- Journal volume & issue
-
Vol. 961,
no. 1
p. 69
Abstract
HDF850.1 is the brightest submillimeter galaxy (SMG) in the Hubble Deep Field. It is known as a heavily dust-obscured star-forming galaxy embedded in an overdense environment at z = 5.18. With nine-band NIRCam images at 0.8–5.0 μ m obtained through the JWST Advanced Deep Extragalactic Survey, we detect and resolve the rest-frame UV–optical counterpart of HDF850.1, which splits into two components because of heavy dust obscuration in the center. The southern component leaks UV and H α photons, bringing the galaxy ∼100 times above the empirical relation between infrared excess and UV continuum slope (IRX– β _UV ). The northern component is higher in dust attenuation and thus fainter in UV and H α surface brightness. We construct a spatially resolved dust-attenuation map from the NIRCam images, well matched with the dust continuum emission obtained through millimeter interferometry. The whole system hosts a stellar mass of 10 ^10.8±0.1 M _⊙ and star formation rate (SFR) of 10 ^2.8±0.2 M _⊙ yr ^−1 , placing the galaxy at the massive end of the star-forming main sequence at this epoch. We further confirm that HDF850.1 resides in a complex overdense environment at z = 5.17–5.30, which hosts another luminous SMG at z = 5.30 (GN10). The filamentary structures of the overdensity are characterized by 109 H α -emitting galaxies confirmed through NIRCam slitless spectroscopy at 3.9–5 μ m, of which only eight were known before the JWST observations. Given the existence of a similar galaxy overdensity in the GOODS-S field, our results suggest that 50% ± 20% of the cosmic star formation at z = 5.1–5.5 occur in protocluster environments.
Keywords
- High-redshift galaxies
- Luminous infrared galaxies
- Ultraluminous infrared galaxies
- Galaxy evolution
- James Webb Space Telescope