2021A&A...650A..68V -
Astronomy and Astrophysics, volume 650A, 68-68 (2021/6-1)
J-PLUS: The star formation main sequence and rate density at d ≤ 75 Mpc.
VILELLA-ROJO G., LOGRONO-GARCIA R., LOPEZ-SANJUAN C., VIIRONEN K., VARELA J., MOLES M., CENARRO A.J., CRISTOBAL-HORNILLOS D., EDEROCLITE A., HERNANDEZ-MONTEAGUDO C., MARIN-FRANCH A., VAZQUEZ RAMIO H., GALBANY L., GONZALEZ DELGADO R.M., HERNAN-CABALLERO A., LUMBRERAS-CALLE A., SANCHEZ-BLAZQUEZ P., SOBRAL D., VILCHEZ J.M., ALCANIZ J., ANGULO R.E., DUPKE R.A. and SODRE L.
Abstract (from CDS):
Aims. Our goal is to estimate the star formation main sequence (SFMS) and the star formation rate density (SFRD) at z≤0.017 (d≤75Mpc) using the Javalambre Photometric Local Universe Survey (J-PLUS) first data release, that probes 897.4deg2 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 logM*≤8 and it is clearly defined by the blue galaxies, with the red galaxies located below them. The SFMS is described as logSFR=0.83logM*-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 logLHα*=41.34, logph*=-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≤75Mpc is logρSFR=-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.
Abstract Copyright:
© ESO 2021
Journal keyword(s):
galaxies: general - galaxies: evolution - galaxies: fundamental parameters - galaxies: star formation - galaxies: luminosity function - mass function
Simbad objects:
4
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2021A&A...650A..68V and select 'bookmark this link' or equivalent in the popup menu