Value-added catalog of physical properties for more than 1.3 million galaxies from the DESI survey

Aims. We present an extensive catalog of the physical properties of more than a million galaxies investigated with the Dark Energy Spectroscopic Instrument (DESI), one of the largest spectroscopic surveys to date. Spanning a full range of target types, including emission-line galaxies, luminous red galaxies, and quasars, our survey encompasses an unprecedented range of spectroscopic redshifts, all the way from 0 to 6. Methods. The physical properties, such as stellar masses and star formation rates, were derived via the CIGALE spectral energy distribution (SED) fitting code accounting for the contribution coming from active galactic nuclei (AGNs). Based on the modeling of the optical-mid-infrared ( grz supplemented with WISE photometry) SEDs, we studied the galaxy properties with respect to their location on the main sequence. Results. We have revised the dependence of stellar mass estimates on model choices and on the availability of WISE photometry. Indeed, the WISE data are required to minimize the misclassification of star-forming galaxies as AGNs. The lack of WISE bands in SED fits leads to elevated AGN fractions for 68% of star-forming galaxies identified using emission line diagnostic diagrams, but this does not significantly affect their stellar mass or star formation estimates.

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Publication Details

Journal
Astronomy and Astrophysics
Published
2024-10-17
DOI
https://doi.org/10.1051/0004-6361/202451761
Citations
16
Primary Topic
Galaxies: Formation, Evolution, Phenomena
Type
article
Field-Weighted Citation Impact
5.30

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article

Value-added catalog of physical properties for more than 1.3 million galaxies from the DESI survey

D. Kirkby, Will J. Percival, Andrew Lambert, Zhiwei Pan et al.
16 citations
Astronomy and Astrophysics
Galaxies: Formation, Evolution, Phenomena
5.30
article

Value-added catalog of physical properties for more than 1.3 million galaxies from the DESI survey

D. Kirkby, Will J. Percival, Andrew Lambert, Zhiwei Pan, D. Brooks, Paul Martini, M. Mezcua, Michael S. Schubnell, Fabio Speranza, Jeffrey A. Newman, Gregory Tarlé, Kyle Dawson, D. Scholte, Andreu Font-Ribera, M. Siudek, G. Gutierrez, Laurent Le Guillou, Gustavo Niz, David J. Schlegel, Axel de la Macorra, Martin Landriau, A. Saintonge, A. Kremin, T. Kisner, Shaun Cole, Marc Manera, J. Aguilar, Eusebio Sanchez, Satya Gontcho A Gontcho, C. Circosta, ENRIQUE GAZTAÑAGA, K. Honscheid, Cullan Howlett, Arjun T. Dey, J. E. Forero-Romero, Steven P. Ahlen, Aaron Meisner, Biprateep Dey, Ragadeepika Pucha, R. Kehoe, John Moustakas, Mustapha Ishak, Hee‐Jong Seo, Hu Zou, T. Claybaugh, Graziano Rossi, R. Miquel, Claire Poppett, F. Prada, B. A. Weaver, Peter Doel, S. Juneau, D. Sprayberry
article en
16 citations

Abstract

Aims. We present an extensive catalog of the physical properties of more than a million galaxies investigated with the Dark Energy Spectroscopic Instrument (DESI), one of the largest spectroscopic surveys to date. Spanning a full range of target types, including emission-line galaxies, luminous red galaxies, and quasars, our survey encompasses an unprecedented range of spectroscopic redshifts, all the way from 0 to 6. Methods. The physical properties, such as stellar masses and star formation rates, were derived via the CIGALE spectral energy distribution (SED) fitting code accounting for the contribution coming from active galactic nuclei (AGNs). Based on the modeling of the optical-mid-infrared ( grz supplemented with WISE photometry) SEDs, we studied the galaxy properties with respect to their location on the main sequence. Results. We have revised the dependence of stellar mass estimates on model choices and on the availability of WISE photometry. Indeed, the WISE data are required to minimize the misclassification of star-forming galaxies as AGNs. The lack of WISE bands in SED fits leads to elevated AGN fractions for 68% of star-forming galaxies identified using emission line diagnostic diagrams, but this does not significantly affect their stellar mass or star formation estimates.

Astronomy and AstrophysicsVol. 691
Laboratoire de Physique Nucléaire et de Hautes Énergies (FR)
National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Gordon and Betty Moore Foundation, University of California, California Institute of Technology, Ministerio de Ciencia, Innovación y Universidades, National Energy Research Scientific Computing Center, European Commission, National Natural Science Foundation of China, Chinese Academy of Sciences, Ministerio de Ciencia e Innovación, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Narodowa Agencja Wymiany Akademickiej, Office of Science, Jet Propulsion Laboratory, Science and Technology Facilities Council, Agencia Estatal de Investigación, National Key Research and Development Program of China, Division of Astronomical Sciences, High Energy Physics, Lawrence Berkeley National Laboratory, HORIZON EUROPE Marie Sklodowska-Curie Actions
Affordable and clean energy
Openalex Percentile: Top 4%
Galaxies: Formation, Evolution, Phenomena
5.30
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