J/MNRAS/447/492ivo://CDS.VizieR/J/MNRAS/447/492doi:10.26093/cds/vizier.74470492CDSGalan C.Mikolajewska J.Hinkle K.H.2024-08-14T20:19:48Z2019-10-22T12:30:07ZCDS support team

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

cds-question@unistra.frinfrared-astronomyspectroscopyatomic-physicsKnowledge of the elemental abundances of symbiotic giants is essential to address the role of chemical composition in the evolution of symbiotic binaries, to map their parent population, and to trace their mass transfer history. However, there are few symbiotic giants for which the photospheric abundances are fairly well determined. This is the second in a series of papers on chemical composition of symbiotic giants determined from high-resolution (R~50000) near-IR spectra. Results are presented for the late-type giant star in the AE Ara, BX Mon, KX TrA, and CL Sco systems. Spectrum synthesis employing standard local thermal equilibrium (LTE) analysis and stellar atmosphere models were used to obtain photospheric abundances of CNO and elements around the iron peak (Sc, Ti, Fe, and Ni). Our analysis resulted in sub-solar metallicities in BX Mon, KX TrA, and CL Sco by [Fe/H]~-0.3 or -0.5 depending on the value of microturbulence. AE Ara shows metallicity closer to solar by ~0.2 dex. The enrichment in ^14^N isotope found in all these objects indicates that the giants have experienced the first dredge-up. In the case of BX Mon first dredge-up is also confirmed by the low ^12^C/^13^C isotopic ratio of ~8.2015MNRAS.447..492Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/447/492CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/146/407 : Symbiotic stars catalogue (Belczynski+, 2000)J/AJ/153/35 : Infrared spectroscopy of symbiotic stars. XI. (Fekel+, 2017)J/ApJS/240/21 : Symbiotic stars with 2MASS, WISE + Gaia data (Akras+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/447/492https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/447/492http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/447/492https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/447/492https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/447/492http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/447/492GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/MNRAS/447/492/catalogList of atomic (table b1) and molecular (table b2) lines selected for calculations together with gf-values and excitation potentialsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLineAtomic or molecular linemeta.notecharIDElement speciesmeta.id;spect.lineWave[15590/23642.4] Wavelength in air ({AA})0.1nmem.wldoublen_Wave[a] Note on Wave (only in tableb1) (1)meta.notecharEP[0.0048/6.41] Excitation potentialeVphys.atmol.excitationfloatloggf[-8.264/0.36] Log oscillator strengthphys.atmol.oscStrengthfloatRefReferencemeta.ref;pos.framecharBibcodeBibcode of referencemeta.bib.bibcodecharComComment on referencemeta.notechar