ALMA Lensing Cluster Survey: Average dust, gas, and star-formation properties of cluster and field galaxies from stacking analysis
Journal article, 2023
We develop new tools for continuum and spectral stacking of Atacama Large Millimeter/submillimeter Array (ALMA) data, and apply these to the ALMA Lensing Cluster Survey. We derive average dust masses, gas masses, and star-formation rates (SFRs) from the stacked observed 260-GHz continuum of 3402 individually undetected star-forming galaxies, of which 1450 are cluster galaxies and 1952 field galaxies, over three redshift and stellar mass bins (over z = 0-1.6 and log-11.7), and derive the average molecular gas content by stacking the emission line spectra in a SFR-selected subsample. The average SFRs and specific SFRs of both cluster and field galaxies are lower than those expected for main-sequence (MS) star-forming galaxies, and only galaxies with stellar mass of log-10.6 show dust and gas fractions comparable with those in the MS. The ALMA-Traced average 'highly obscured' SFRs are typically lower than the SFRs observed from optical to near-infrared spectral analysis. Cluster and field galaxies show similar trends in their contents of dust and gas, even when field galaxies were brighter in the stacked maps. From spectral stacking we find a potential CO (J = 4 → 3) line emission (signal-To-noise ratio being ∼4) when stacking cluster and field galaxies with the highest SFRs.
radio continuum: galaxies
galaxies: star formation
submillimetre: galaxies
galaxies: evolution
radio lines: galaxies
Author
Andrea Guerrero
University of Concepcion
N. M. Nagar
University of Concepcion
Kotaro Kohno
Research Center for the Early Universe
University of Tokyo
S. Fujimoto
Niels Bohr Institute
Cosmic Dawn Center (DAWN)
V. Kokorev
Niels Bohr Institute
Cosmic Dawn Center (DAWN)
G. Brammer
Niels Bohr Institute
Cosmic Dawn Center (DAWN)
Jean Baptiste Jolly
Max Planck Society
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Kirsten Knudsen
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Fengwu Sun
University of Arizona
F. E. Bauer
Millennium Institute of Astrophysics
Space Science Institute
Pontificia Universidad Catolica de Chile
G. B. Caminha
University of Groningen
Karina I. Caputi
Cosmic Dawn Center (DAWN)
University of Groningen
Gerald Neumann
University of Concepcion
Gustavo Orellana-González
Fundacion Chilena de Astronoḿ?a
Pierluigi Cerulo
University of Concepcion
J. González-López
Diego Portales University
Las Campanas Observatory
N. Laporte
University of Cambridge
Anton M. Koekemoer
Space Telescope Science Institute (STScI)
Y. Ao
Chinese Academy of Sciences
University of Science and Technology of China
D. Espada
Universidad de Granada
Alejandra M.Muñoz Arancibia
Pontificia Universidad Catolica de Chile
Monthly Notices of the Royal Astronomical Society
0035-8711 (ISSN) 1365-2966 (eISSN)
Vol. 526 2 2423-2439Subject Categories
Astronomy, Astrophysics and Cosmology
Geophysics
DOI
10.1093/mnras/stad2916