We derive the stellar mass function (SMF) of quiescent and star-forming galaxies at z<=0.2 using 12-band (five broad plus seven narrow) photometry from the Javalambre Photometric Local Universe Survey (J-PLUS) third data release (DR3) over 3284 deg2, where the narrow bands improve photometric-redshift and stellar property precision relative to purely broadband surveys. We selected ~890000 galaxies with r<=20mag and photometric redshifts in the range 0.05<=z.95 at log(M/M_{sun}_)>11. Comparisons with the GAlaxy Evolution and Assembly (GAEA) semi-analytic model show an overabundance of simulated star-forming galaxies, particularly at intermediate masses. The SMFs and quiescent fraction from J-PLUS DR3 are consistent with the literature and provide valuable constraints for galaxy formation models. Quiescent galaxies represent 45% of the number density at log M>9 but contribute 75% of the stellar mass density. This work lays the groundwork for studies of environmental quenching using J-PLUS. The inclusion of seven narrowband filters improves redshift precision by 20%, enabling more accurate SED fitting and galaxy classification. These methods and findings can be extended with J-PAS, which will provide deeper and higher-resolution photometry over a wider spectral range.

Cone search capability for table J/A+A/709/A157/catalog (Main catalog (table F1))