Volume 650, June 2021
|Number of page(s)||25|
|Published online||08 June 2021|
J-PLUS: The star formation main sequence and rate density at d ≲ 75 Mpc
Centro de Estudios de Física del Cosmos de Aragón, Plaza San Juan 1, 44001 Teruel, Spain
2 Centro de Estudios de Física del Cosmos de Aragón, Unidad Asociada al CSIC, Plaza San Juan 1, 44001 Teruel, Spain
3 Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, 05508-090 São Paulo, Brazil
4 Departamento de Física Teórica y del Cosmos, Universidad de Granada, 18071 Granada, Spain
5 IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
6 Departamento de Física de la Tierra y Astrofísica, Universidad Complutense de Madrid, 28040 Madrid, Spain
7 IPARCOS, Facultad de CC Físicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
8 Department of Physics, Lancaster University, Lancaster LA1 4YB, UK
9 Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
10 Observatório Nacional, Rua General José Cristino, 77 – Bairro Imperial de São Cristóvão, 20921-400 Rio de Janeiro, Brazil
11 Donostia International Physics Centre (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
12 IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
13 University of Michigan, Department of Astronomy, 1085 South University Ave., Ann Arbor, MI 48109, USA
14 University of Alabama, Department of Physics and Astronomy, Gallalee Hall, Tuscaloosa, AL 35401, USA
Accepted: 7 January 2021
Aims. Our goal is to estimate the star formation main sequence (SFMS) and the star formation rate density (SFRD) at z ≤ 0.017 (d ≲ 75 Mpc) using the Javalambre Photometric Local Universe Survey (J-PLUS) first data release, that probes 897.4 deg2 with twelve optical bands.
Methods. We extract the Hα emission flux of 805 local galaxies from the J-PLUS filter J0660, being the continuum level estimated with the other eleven J-PLUS bands, and the dust attenuation and nitrogen contamination corrected with empirical relations. Stellar masses (M⋆), Hα luminosities (LHα), and star formation rates (SFRs) were estimated by accounting for parameters covariances. Our sample comprises 689 blue galaxies and 67 red galaxies, classified in the (u − g) vs. (g − z) color–color diagram, plus 49 AGN.
Results. The SFMS is explored at log M⋆ ≳ 8 and it is clearly defined by the blue galaxies, with the red galaxies located below them. The SFMS is described as log SFR = 0.83log M⋆ − 8.44. We find a good agreement with previous estimations of the SFMS, especially those based on integral field spectroscopy. The Hα luminosity function of the AGN-free sample is well described by a Schechter function with log LHα∗ = 41.34, log ϕ* = −2.43, and α = −1.25. Our measurements provide a lower characteristic luminosity than several previous studies in the literature.
Conclusions. The derived star formation rate density at d ≲ 75 Mpc is log ρSFR = −2.10 ± 0.11, with red galaxies accounting for 15% of the SFRD. Our value is lower than previous estimations at similar redshift, and provides a local reference for evolutionary studies regarding the star formation history of the Universe.
Key words: galaxies: general / galaxies: evolution / galaxies: fundamental parameters / galaxies: star formation / galaxies: luminosity function / mass function
© ESO 2021
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