J/A+A/561/A63ivo://CDS.VizieR/J/A+A/561/A63doi:10.26093/cds/vizier.35610063CDSGonzalez J.F.Saffe C.Castelli F.Hubrig S.Ilyin I.Scholler M.,Carroll T.A.Leone F.Giarrusso M.2018-01-11T06:57:17Z2013-12-30T08:10:48ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starschemically-peculiar-starsmagnetic-fieldsWe perform a complete study of the HgMn binary HD 161701, including the determination of physical parameters and photospheric chemical abundances. We analyzed time series of high-resolution FEROS and HARPS spectroscopic observations in addition to a near-IR spectrum obtained with CRIRES. Radial velocity curves were combined with additional spectroscopic information to estimate absolute stellar parameters. A spectral separation technique was applied, which enabled us to conduct a detailed spectral analysis of both components. The primary is a HgMn star with overabundances of P, Mn, Ga, Y, Xe, and Hg. The secondary is an Ap star showing strong (2-5dex) overabundances of Sr, Y, and rare-earth elements. We detected line profile variations in both stellar companions, indicating a non uniform surface distribution of chemical composition. The secondary presents a remarkable chemical pattern with Ti and rare-earths pemanently facing the binary companion, and Fe concentrated on the far side. The primary star shows weak profile variations in Mn and Cr spectral lines. The coincidence of chemical spots with the position of the binary companion suggests a possible connection between the presence of the companion and the origin of chemical anomalies.2014A&A...561A..63Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/561/A63CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/561/A63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/561/A63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/561/A63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/561/A63https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/561/A63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/561/A63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/561/A63/refslog(gf) referencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference code for log(gf)meta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharJ/A+A/561/A63/table3List of IR lines identified in the CRIRES spectrum of HD 161701, for components A and BrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[10731.4/15844.1]? Observed wavelength0.1nmem.wldoublenullableu_lambdaUncertainty flag on lambdameta.code.errorcharRc? Relative flux at the line corephot.flux;arith.ratiofloatnullableu_RcUncertainty flag on Rcmeta.code.errorcharComp[A/B] Star Companion (A or B)meta.idcharElemElement/Ionmeta.notecharlam.lab? Laboratory wavelength of the line0.1nmem.wl;spect.linedoublenullablelog(gf)? Oscillator strengthphys.atmol.oscStrengthfloatnullableXlow? Lower Excitation potentialcm**-1phys.atmol.excitation;stat.mindoublenullableXup? Upper Excitation potentialcm**-1phys.atmol.excitation;stat.maxdoublenullabler_log(gf)Reference code for log(gf) value, in refs.dat filemeta.ref;pos.framecharJ/A+A/561/A63/linesCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[3800/6999] Wavelength0.1nmem.wldoubleIonAtomic number-dot-ionization statephys.atmol.ionStagefloatI(A)Line abundance in companion Aspect.line.intensityfloatnullablen_I(A)[b] 'b' for blended linemeta.notecharI(B)Line abundance in companion Bspect.line.intensityfloatnullablen_I(B)[b] 'b' for blended linemeta.notecharJ/A+A/561/A63/abundancesLine by line abundances of the 2 components (tables 6 and 7)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintElemElement/Ionmeta.notecharlambda[3840/6674] Wavelength0.1nmem.wlfloatlog(gf)log(gf) valuestat.value;arith.zpfloatr_log(gf)Reference code for log(gf) value in refs.dat filemeta.ref;pos.framecharEPExcitation potentialcm**-1phys.atmol.excitationdoubleAb(A)Line abundance in companion Aphys.abundfloatnullableAb(B)Line abundance in companion Bphys.abundfloatnullable