6533b871fe1ef96bd12d1ae2
RESEARCH PRODUCT
Stellar populations of galaxies in the ALHAMBRA survey up toz ∼ 1
F. J. CastanderI. San RomanTom BroadhurstTom BroadhurstA. J. CenarroKerttu ViironenCarlos López-sanjuanJ. CepaJ. CepaFrancisco PradaIsabel MárquezJosefa MasegosaNarciso BenítezS. BonoliJ. A. L. AguerriJ. A. L. AguerriJesús Cabrera-cañoA. Del OlmoLeopoldo InfanteMariano MolesT. Aparicio-villegasEmilio J. AlfaroAlberto Fernández-sotoAlberto MolinoVicent J. MartínezIgnacio FerrerasJ. M. QuintanaMiguel CerviñoJaime PereaL. A. Díaz-garcíaDavid Cristóbal-hornillosR. M. González DelgadoC. Husillossubject
formation [galaxies]Stellar massStellar populationAstrophysics::High Energy Astrophysical PhenomenaMetallicityPopulationFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics01 natural sciences0103 physical sciencesgalaxies: formationAstrophysics::Solar and Stellar Astrophysicseducation010303 astronomy & astrophysicsevolution [galaxies]Astrophysics::Galaxy AstrophysicsPhotometric redshiftPhysicseducation.field_of_study010308 nuclear & particles physicsStar formationAstronomy and Astrophysicsstellar content [galaxies]Astrophysics - Astrophysics of GalaxiesGalaxygalaxies: photometrySpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)photometry [galaxies]galaxies: stellar contentSpectral energy distributionAstrophysics::Earth and Planetary Astrophysicsgalaxies: evolutiondescription
Aims. We aim at constraining the stellar population properties of quiescent galaxies. These properties reveal how these galaxies evolved and assembled since z similar to 1 up to the present time. Methods. Combining the ALHAMBRA multi-filter photo-spectra with the fitting code for spectral energy distribution MUFFIT (MUlti-Filter FITting), we built a complete catalogue of quiescent galaxies via the dust-corrected stellar mass vs. colour diagram. This catalogue includes stellar population properties, such as age, metallicity, extinction, stellar mass, and photometric redshift, retrieved from the analysis of composited populations based on two independent sets of simple stellar population (SSP) models. We developed and applied a novel methodology to provide, for the first time, the analytic probability distribution functions (PDFs) of mass-weighted age, metallicity, and extinction of quiescent galaxies as a function of redshift and stellar mass. We adopted different star formation histories to discard potential systematics in the analysis. Results. The number density of quiescent galaxies is found to increase since z similar to 1, with a more substantial variation at lower stellar mass. Quiescent galaxies feature extinction AV progenitor> bias should also be taken into account. © ESO 2019
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-02-19 | Astronomy & Astrophysics |