J/A+A/709/A144ivo://CDS.VizieR/J/A+A/709/A144CDSCarini R.Biazzo K.Frasca A.Manara C.F.Alcala J.M.Abraham P.,Campbell-White J.Claes R.Fang M.Gangi M.Gameiro J.F.Kospal A.,Mauco K.Mendigutia I.Nisini B.Robberto M.Robinson C.E.,Schneider C.Siwak M.Sperling T.Tychoniec L.Venuti L.2026-05-19T14:14:26Z2026-05-12T08:51:49ZCDS support team

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

cds-question@unistra.fropen-star-clusterschemical-abundancesvisible-astronomyWe conducted a homogeneous chemical analysis of pre-main sequence stars with effective temperatures ranging from ~3000K to ~5500K in eight nearby star-forming regions (SFRs): Chamaeleon I, eta Chamaeleonis, Lupus, Orion OB1a, Orion OB1b, sigma Orionis, Taurus, and Corona-Australis. Our study aims to: 1) derive the lithium abundance (A(Li)) and highlight the impact of veiling correction on both A(Li) and age determination; 2) perform the iron (Fe) and barium (Ba) abundance analysis in regions with scarce previous measurements; 3) investigate the possible Ba enhancement. The analyzed data were obtained as part of the PENELLOPE Large Program using the ESPRESSO, UVES, and X-Shooter instruments. We measured the equivalent width of the lithium line (EWLi) at {lambda}=6707.8{AA}, from which A(Li) is derived using the curves of growth method. The Fe and Ba abundances have been measured through spectral synthesis analysis. Using the EAGLES code, we derived an upper limit on the age of the eight SFRs. Our findings underscore the necessity of veiling corrections on EWLi, which can shift A(Li) and age estimates by up to ~0.7dex and ~20Myr, respectively. Accounting for veiling, the A(Li) distributions peak in a range between 3.3 and 3.8dex for most clusters, and the upper age limit is approximately 5Myr for all SFRs. We successfully measured the mean iron and barium abundances in Lupus, Taurus, Cha I, and eta Cha, showing slightly sub-solar iron abundance, and a clear Ba overabundance, with [Ba/H] values reaching up to 0.75 dex.2026A&A...709A.144Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/709/A144CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/704/A42 : Penellope VII. Accretion luminosity (Fiorellino+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/709/A144https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/709/A144http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/709/A144https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/709/A144https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/709/A144http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/709/A144GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/709/A144/tablea1 (Results from the UVES spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/709/A144/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/709/A144/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/709/A144/tablea1?GETtext/xml+votable180.050000true80.76958361.62080860.005555555555555556Cone search capability for table J/A+A/709/A144/tablea2 (Results from the ESPRESSO spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/709/A144/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/709/A144/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/709/A144/tablea2?GETtext/xml+votable180.050000true83.9416758-0.96450970.005555555555555556Cone search capability for table J/A+A/709/A144/tablea3 (Results from the X-Shooter spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/709/A144/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/709/A144/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/709/A144/tablea3?GETtext/xml+votable180.050000true80.76958361.62080860.0055555555555555566/1029 1048 1050 1073 1083 1114 1170-1171 22851 22854 22861-22862 22874 22881 22884 22894-22895 23518 23549 36956-36958 37012-37013 37128 42598 42605 42611 42614-42615 42704-42705 42707 42713-42714 42727 42736-42737 47826 47845https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/709/A144?format=asciiOpticaldefaultJ/A+A/709/A144/tablea1Results from the UVES spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharNameName of the targetmeta.id;meta.maincharn_Name[*] Note on Name (G1)meta.notecharEpochEpoch of the multi-observationtime.epochcharObs.DateObservation datetime.epoch;obsnullableTeffEffective temperatureKphys.temperature.effectiveintSimbadNameSimbad column added by the CDSmeta.idcharnullablee_TeffEffective temperature errorKstat.error;phys.temperature.effectiveintr650Veiling measured at 6500phys.absorptionfloate_r650Veiling measured at 6500 errorstat.errorfloatEWLirawEquivalent width of the lithium line derived by performing a Gaussian fitmspect.line.eqWidth;meta.modelledfloate_EWLirawEquivalent width of the lithium line derived by performing a Gaussian fit errormstat.errorfloatEWLiveil+FeEquivalent width of the lithium line raw corrected for r650 and Fe blendingspect.line.eqWidthfloatA(Li)NLTELithium abundance corrected for NLTE effectphys.abundfloatn_A(Li)NLTE[** ] Note on A(Li)NLTE (G2)meta.notechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/709/A144/tablea2Results from the ESPRESSO spectraSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharNameName of the targetmeta.id;meta.maincharn_Name[*] Note on Name (G1)meta.notecharEpochEpoch of the multi-observationtime.epochcharObs.DateObservation datetime.epoch;obsnullableTeffEffective temperatureKphys.temperature.effectiveinte_TeffEffective temperature errorKstat.error;phys.temperature.effectiveintr650Veiling measured at 6500phys.absorptionfloate_r650Veiling measured at 6500 errorstat.errorfloatEWLirawEquivalent width of the lithium line derived by performing a Gaussian fitmspect.line.eqWidth;meta.modelledfloate_EWLirawEquivalent width of the lithium line derived by performing a Gaussian fit errormstat.errorfloatEWLiveil+FeEquivalent width of the lithium line raw corrected for r650 and Fe blendingspect.line.eqWidthfloatA(Li)NLTELithium abundance corrected for NLTE effectphys.abundfloatn_A(Li)NLTE[** ] Note on A(Li)NLTE (G2)meta.notechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/709/A144/tablea3Results from the X-Shooter spectraObs.DateObservation datetime.epoch;obsnullableTeffEffective temperatureKphys.temperature.effectiveinte_TeffEffective temperature errorKstat.error;phys.temperature.effectiveintr710Veiling measured at 7100phys.absorptionfloatEWLirawEquivalent width of the lithium line derived by performing a Gaussian fitmspect.line.eqWidth;meta.modelledfloate_EWLirawEquivalent width of the lithium line derived by performing a Gaussian fit errormstat.errorfloatEWLiveil+FeEquivalent width of the lithium line raw corrected for r650 and Fe blendingspect.line.eqWidthfloatSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharNameName of the targetmeta.id;meta.maincharn_Name[*] Note on Name (G1)meta.notecharEpochEpoch of the multi-observationtime.epochcharA(Li)NLTELithium abundance corrected for NLTE effectphys.abundfloatn_A(Li)NLTE[** ] Note on A(Li)NLTE (G2)meta.notechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main