ALMA Detection of [O iii ] 88 μm at z=12.33: Exploring the Nature and Evolution of GHZ2 as a Massive Compact Stellar System
Artikel i vetenskaplig tidskrift, 2024
We present Atacama Large Millimeter/submillimeter Array observations on the high-redshift galaxy GHZ2 and report a successful detection of the rest-frame 88 mu m atomic transition from doubly ionized oxygen at z = 12.3327 +/- 0.0035. Based on these observations, combined with additional constraints on the [O iii] 52 mu m line luminosity and previous JWST data, we argue that GHZ2 is likely powered by compact and young star formation and show that it follows well-established relationships found for giant H ii regions and metal-poor star-forming dwarf galaxies that are known to host bright super star clusters. Additionally, these observations provide new constraints on the oxygen electron density (100 less than or similar to n e [cm-3] less than or similar to 4,000) and dynamical mass (M dyn approximate to 3-8 x 108 M circle dot). The existence of these massive starburst systems 13.3 Gyr ago might explain the origin of today's globular clusters, a long-standing question in astronomy. To test this, we present observational probes to investigate whether sources like GHZ2 are linked to the formation of today's globular clusters or other more massive compact stellar systems.
Författare
Jorge A. Zavala
National Astronomical Observatory of Japan
Tom Bakx
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Ikki Mitsuhashi
Waseda University
Marco Castellano
Istituto nazionale di astrofisica (INAF)
Antonello Calabro
Istituto nazionale di astrofisica (INAF)
Hollis Akins
University of Texas
Veronique Buat
Aix-Marseille Université
Caitlin M. Casey
University of Texas
David Fernandez-Arenas
Instituto Nacional de Astrofísica, Óptica y Electrońica
ArcWear
Maximilien Franco
University of Texas
Adriano Fontana
Istituto nazionale di astrofisica (INAF)
Bunyo Hatsukade
The Graduate University for Advanced Studies (SOKENDAI)
Waseda University
National Astronomical Observatory of Japan
Luis C. Ho
Beijing University of Technology
Ryota Ikeda
The Graduate University for Advanced Studies (SOKENDAI)
National Astronomical Observatory of Japan
Jeyhan Kartaltepe
Rochester Institute of Technology
Anton M. Koekemoer
Space Telescope Science Institute (STScI)
Jed Mckinney
University of Texas
Lorenzo Napolitano
Istituto nazionale di astrofisica (INAF)
Sapienza Università di Roma
Pablo G. Perez-Gonzalez
Consejo Superior de Investigaciones Científicas (CSIC)
Paola Santini
Istituto nazionale di astrofisica (INAF)
Stephen Serjeant
The Open University
Elena Terlevich
University of Cambridge
Instituto Nacional de Astrofísica, Óptica y Electrońica
Universidad Nacional de La Plata
Roberto Terlevich
Universidad Nacional de La Plata
Instituto Nacional de Astrofísica, Óptica y Electrońica
University of Cambridge
L. Y. Aaron Yung
Space Telescope Science Institute (STScI)
Astrophysical Journal Letters
2041-8205 (ISSN) 2041-8213 (eISSN)
Vol. 977 1 L9Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
Atom- och molekylfysik och optik
DOI
10.3847/2041-8213/ad8f38