J/A+A/672/A166ivo://CDS.VizieR/J/A+A/672/A166doi:10.26093/cds/vizier.36720166CDSSantos-Peral P.Sanchez-Blazquez P.Vazdekis A.Palicio P.A.2024-11-06T20:03:27Z2023-04-19T08:38:55ZCDS support team

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

cds-question@unistra.frchemical-abundancesvisible-astronomyspectroscopyultraviolet-astronomyThe X-shooter Spectral Library (XSL) is a large empirical stellar library used as a benchmark for the development of stellar population models. The inclusion of alpha-elements abundances is crucial to disentangling the chemical evolution of any stellar system. This paper provides a catalogue of high-precision and accurate magnesium and calcium abundances from a wide variety of stars well distributed in the Hertzsprung-Russell (HR) diagram. We originally performed an analysis of the derived Mg and Ca abundances for medium-resolution spectra from the XSL Data Release 2. For this purpose, we used the GAUGUIN automated abundance estimation code to fit the ultraviolet-blue (UVB) and visible (VIS) spectra. We tested the consistency of the atmospheric parameters and chemical abundances with the Gaia DR3 and the AMBRE Project datasets.We have obtained precise [Mg/Fe] and [Ca/Fe] abundances for 192 and 217 stars respectively, from which 174 stars have measurements in both elements. The stars cover a broad range of effective temperature 4000<Teff<6500K, surface gravity 0.3<log(g)<4.8cm/s^2^, and metallicity -2.5<[Fe/H]<+0.4dex. We find an excellent agreement with the abundance estimates from the AMBRE:HARPS and the Gaia/RVS analysis. Moreover, the resulting abundances reproduce a plateau in the metal-poor regime followed by a decreasing trend even at supersolar metallicities, as predicted by Galactic chemical evolution models. This catalogue is suitable for improving the modelling of evolutionary stellar population models with empirical alpha-enhancements, which could significantly contribute to the analysis of external galaxies abundances in the near future.2023A&A...672A.166Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/672/A166CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/672/A166https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/672/A166http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/672/A166https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/672/A166https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/672/A166http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/672/A166GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/672/A166/table3 (X-shooter catalogue of magnesium and calcium abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/672/A166/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/672/A166/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/672/A166/table3?GETtext/xml+votable180.050000true5.1179714-30.55552140.0055555555555555566/49 137 154 373 382 725 798 1111 1556 4129 4298 4376 4468 4594 4698 4867 5195 5226 6226 6287 8779 8967 9065 9121 12295 12315 12340 12626 12793 12934 12943 13025 13028 13087 13132 16463 16513 16821 16912 16924 17099 17124 17234 17338 17695 17769 17812 18028 18177 18425 18553 18561 18726 18747 18887 18945 18990 19051 19179 19347 19809 19816 19924 20110 20132 20390 20532 20797 21209 21269 21389 21561 21666 21696 21920 21974 22103 22108 22127 22130 22137 22181 22187 22202 22205 22213 22220 22251 22292 22311 22331-22332 22334 22423-22425 22518 22594 22868 22971 23061 23177 23428 23527 23568 23582 23616 23632 23978 24377 24396 24678 24683 24777 24828 24848 25015 25051 25200 25607 25793 25839 25851 25906 25939 25963 25966 26109-26110 26289 26304-26305 26316 26366 26468 26522 26963 26978 27088 27091 27143 27641 27686 27765 27857 27871 27991 28006 28350 28584 28966 29084 29548 29593 29596 29657 29703 29769 29776 29875 30078 30132 30148 30179 30226-30227 30257 30307 30328 30330 30363 30435 30439 30450 30452 30459 30488 30504 30577 30616 30779 31011 31069 31172 31279 31346 31516 31592 31658 31757 31826 31933 32181 32343 32441 33018 33092 33295 34171 35742 35768 35813 36126 36221 36540 36735 36745 36762 37895 37994 39112 39258 39413 39915 40222 40337 40567 42274 43227 44542 44644 44653 44771 44816 45837 46997 48281 48553 48731 48824 48946 48964 49065 49142https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/672/A166?format=asciiUVOpticaldefaultJ/A+A/672/A166/table3X-shooter catalogue of magnesium and calcium abundancese1_[Ca/Fe]? [Ca/Fe] associated uncertainty to sensitivity to the stellar parametersstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 identifier (source_id)meta.idGaiaDR3Gaia DR3 identifier (source_id)meta.id;meta.mainTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H]Stellar metallicityphys.abund.Zdouble[alpha/Fe]Adopted [alpha/Fe] parameterphys.abunddoubler_[alpha/Fe]Origin from the adopted [alpha/Fe] (empirical approach or Gaia DR3)meta.ref;pos.framecharNspec-UVB? Number of repeat spectra analysed from the UVB X-shooter armmeta.numberintnullableS/N-UVB? Average signal-to-noise of the analysed UVB spectrastat.snrfloatnullable[Mg/Fe]? [Mg/Fe] abundance valuephys.abunddoublenullablee_[Mg/Fe]? [Mg/Fe] associated internal uncertaintystat.error;phys.abunddoublenullablee1_[Mg/Fe]? [Mg/Fe] associated uncertainty to sensitivity to the stellar parametersstat.errordoublenullables_[Mg/Fe]? [Mg/Fe] dispersion among different spectra of the same starinstr.dispersiondoublenullableNspec-VIS? Number of repeat spectra analysed from the VIS X-shooter armmeta.numberintnullableS/N-VIS? Average signal-to-noise of the analysed VIS spectrastat.snrfloatnullable[Ca/Fe]? [Mg/Fe] abundance valuephys.abundfloatnullablee_[Ca/Fe]? [Ca/Fe] associated internal uncertaintystat.error;phys.abunddoublenullables_[Ca/Fe]? [Ca/Fe] dispersion among different spectra of the same starinstr.dispersiondoublenullableXSLspectraXSL spectral designations connected to the starmeta.idchar_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