J/A+A/702/A146ivo://CDS.VizieR/J/A+A/702/A146doi:10.26093/cds/vizier/bc-ny/lbegCDSMunoz Lopez C.Krajnovic D.Epinat B.Urrutia T.Pessa I.Contini T.,Nanayakkara T.Pharo J.Goncalves T.S.Thi Thai T.Bouche N.F.2026-08-03T06:57:51Z2025-10-15T09:21:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesredshiftedgalaxy-classification-systemsIn this work, we derive and analyse the star formation histories of 393 intermediate-redshift (0.1<=z<=0.9) galaxies with stellar masses between ~10^8^-10^12^M_{sun}_. We focus on galaxies located in the CANDELS/GOOD-S and CANDELS/COSMOS fields that have been observed with different surveys using MUSE. We probe a cosmic time of approximately 6 billion years (Gyr) and a range of environments, from field (low-density systems) to rich groups (high-density systems). We find that the galaxies' stellar mean ages, metallicities, and star formation rates (SFRs) follow similar trends to galaxies as those characterising the nearby Universe. We modelled the derived SFRs, quantifying and characterising the number of star-forming episodes (SFEs). We found that more than 85% of the galaxies have more than one event of star formation, typically described with an exponentially decaying SFR and subsequent Gaussian-like episode(s) of star formation. We also observe that massive galaxies have fewer SFEs than low-mass systems and that they form their stellar mass and reach quiescence faster than lower mass galaxies. Moreover, the history of mass assembly for the most massive galaxies in the sample can be described with only one episode of star formation in the early Universe, which we detected as an exponential decrease that was longer in duration than subsequent SF events. This early event has typically been completed by z~3 and it accounts for a high fraction of the total stellar mass, from ~40% for low-mass galaxies to more than 50% for higher-mass galaxies. We also analysed the dependence of stellar population parameters with the various environments probed by the sample, finding no significant correlations between different group environments; however, our field galaxies are generally distinct from group galaxies in terms of the mass, metallicity, stellar ages, and formation timescales. We discuss possible biases in the sample selection and examine how representative our galaxies are of the overall galaxy population at the targeted redshifts.2025A&A...702A.146Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A146CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/624/A141 : MUSE-Wide Survey DR1 catalog (Urrutia+, 2019)J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)J/A+A/670/A4 : MUSE Hubble Ultra Deep Field surveys. DR2 (Bacon+, 2023)J/A+A/683/A205 : MAGIC group and galaxy catalogs (Epinat+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/702/A146https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/702/A146http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/702/A146https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/702/A146https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/702/A146http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/702/A146GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/702/A146/tablea1 (Galaxy properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/702/A146/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/702/A146/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/702/A146/tablea1?GETtext/xml+votable180.050000true53.07106806-27.8227370.0055555555555555566/27256 27258 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/702/A146?format=asciiOpticaldefaultJ/A+A/702/A146/tablea1Galaxy propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintN[1/393] Galaxy indexmeta.id;meta.mainintRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainzMUSE spectroscopic redshiftsrc.redshiftdoubleS/NMUSE S/N ratio measured within effective radiusstat.snrdoubleRemajSize parameter, Rmajkpcphys.angSizedoublelogMasssedGalaxy stellar mass from SED fittinglog(solMass)phys.massdoublelogSFRsed? Galaxy SFR from SED fittinglog(Gyr**-1)phys.SFRdoublenullablelogMasspPXFGalaxy stellar mass from spectral pPXF fittinglog(solMass)phys.massdoublee_logMasspPXFGalaxy stellar mass error, spectral fittinglog(solMass)stat.errordoublelogAgeGalaxy stellar ages from spectral pPXF fittinglog(yr)time.agedoublee_logAgeGalaxy stellar ages error rate from fittinglog(yr)stat.error;time.agedoubleMetalGalaxy stellar metallicity, spectral fittingphys.abund.Zdoublee_MetalGalaxy stellar metallicity errorstat.error;phys.abund.ZdoublelogSFROII? Galaxy SFR from [OII] doublet emissionlog(Gyr**-1)phys.SFRdoublenullablelogt50? Time taken to assemble 50% of the stellar masslog(yr)time.epochdoublenullablelogt90? Time taken to assemble 90% of the stellar masslog(yr)time.epochdoublenullableeta? Environmental global density parameterstat.fit.paramdoublenullableNSFENumber of tar-forming episodesmeta.numberfloatTSFETypes of tar-forming episodes (1)meta.codechar