J/MNRAS/496/832ivo://CDS.VizieR/J/MNRAS/496/832CDSChojnowski S.D.Hubrig S.Hasselquist S.Beaton R.L.Majewski S.R.,Garcia-Hernandez D.A.Decolibus D.2024-06-05T15:47:11Z2023-09-18T15:26:24ZCDS support team

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

cds-question@unistra.frpeculiar-variable-starsmultiple-starsline-intensitiesradial-velocitystellar-spectral-typesorbitsinfrared-astronomyspectroscopyWe report on H-band spectra of chemically peculiar Mercury-Manganese (HgMn) stars obtained via the SDSS/APOGEE survey. As opposed to other varieties of chemically peculiar stars such as classical Ap/Bp stars, HgMn stars lack strong magnetic fields and are defined by extreme overabundances of Mn, Hg, and other heavy elements. A satisfactory explanation for the abundance patterns remains to be determined, but low rotational velocity is a requirement and involvement in binary/multiple systems may be as well. The APOGEE HgMn sample currently consists of 269 stars that were identified among the telluric standard stars as those whose metallic absorption content is limited to or dominated by the H-band MnII lines. Due to the fainter magnitudes probed by the APOGEE survey as compared to past studies, only 9/269 stars in the sample were previously known as HgMn types. The 260 newly identified HgMn stars represents a more than doubling of the known sample. At least 32 per cent of the APOGEE sample are found to be binary or multiple systems, and from multi-epoch spectroscopy, we were able to determine orbital solutions for at least one component in 32 binaries. Many of the multilined systems include chemically peculiar companions, with noteworthy examples being the HgMn+Ap/Bp binary HD 5429, the HgMn+HgMn binary HD 298641, and the HgMn+BpMn+Am triple system HD 231263. As a further peculiarity, roughly half of the sample produces narrow emission in the CI 16895{AA} line, with widths and radial velocities that match those of the MnII lines.2020MNRAS.496..832Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/832CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/832https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/832http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/832https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/832https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/832http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/832GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/832/table1 (Summary of the APOGEE HgMn sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/832/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/832/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/832/table1?GETtext/xml+votable180.050000true2.325675670.37539530.0055555555555555566/1030 1036 1058 1115 1145 1148 1169 1173 1261 1340 1347 1353 1401-1402 1449 1463-1464 1477 1480 1533 1653 1697 1873 1922 1927 2436 2547 2941 2943 2975 3019 3031 3058 3073 3091 3163 3176 3245 3251 3256-3257 3262 3271 3302-3303 3305 3308 3320 3325-3326 3355 3371 3401 3464 3592 3596 3605 3612 3614 3652 3718 3771 6208 6426 6670 6692 10094 10182 10978 12573 12952 12987 13054 13167 13178 13224 13239 13307 13761 13879 13907 14013 14071 14087 14134 14143 14172 14174 14177 14180 14188 14195 14197 14217 14223 14228 14244 14253 14273 14278 14287 14295 14298 14304 14315 14355 14384 14387 14456 14459 14469 14523 14618 14643 14667-14668 14692 14753 14755 14762 15407 15416 15429 15442 15504 15610 15622 15696 15783 16016 16056 16221 20773 20981 21558 21643 21656 21670 21676 21729 21731 22023 22036 22039 22057 22072 22088 22107 22119 22130-22131 22173 22225 22253 22405 22502 22804 22882-22884 22904 23630 23663 23717 23733 23757 23860 23866 23953 23971 23980 23990 24029 24036 24117 24191 24230 24245 24247 24285 24317 24338-24339 24345 24350 24357 24370 24376 24426-24427 24442 24450 24465 24497 24499 24502 24545 28745 28763 28779 28859 28863-28864 28923 29006 29089 29115 29160 29252 29458 29462 29469 29509-29510 29515 29518 29636 29699 29706 29871 29894 29918 30190 30222 30240 30293 30437 30518 30528 30550 30694 30715 31115 32053 32151 37420 37545 37724 38016 39852 39860 39891 39896 41434 41766-41767 42170 42261 42280 42511 481071.1166583743361574e-19 1.2918781580533825e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/832?format=asciiInfrareddefaultJ/MNRAS/496/832/table1Summary of the APOGEE HgMn sampleSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreLink to tables 3,4 and 6meta.ref.urlcharName2MASS source identifier (HHMMSSss+DDMMSSs)meta.id;meta.maincharprimaryONameAlternative namemeta.idcharHmag2MASS H-band magnitudemagphot.mag;em.IR.HfloatS/N? Signal to noise ratiostat.snrintnullableNRVNumber of radial velocity measurementsmeta.numberintNobsNumber of observed spectrameta.numberintvsini? Rotational velocitykm/sphys.veloc.rotatintnullablee_vsini? Error on vsinikm/sstat.error;phys.veloc.rotatintnullableVPRadial velocity plotmeta.ref.urlcharEWMnII? Average equivalent width of MnII 15413{AA}0.0001nmspect.line.eqWidth;stat.meanintnullableEWCeIII? Average equivalent width of CeIII 15961{AA}0.0001nmspect.line.eqWidth;stat.meanintnullableEWCI? Average equivalent width of CI 16895{AA}0.0001nmspect.line.eqWidth;stat.meanintnullableRV? Average radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV? Error on RVkm/sstat.errorfloatnullableRVscat? Maximum observed radial velocity minus the minimum observed radial velocitykm/sphys.veloc;pos.heliocentricfloatnullableBinTypeIndication of binarity (1)src.classcharf_BinTypeFlag on BinType (2)meta.codecharSpTypeSpectral typesrc.spTypecharr_SpTypeReference for SpTypemeta.ref;pos.framechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/MNRAS/496/832/table2Atomic data for lines detected in the APOGEE spectra of HgMn stars, including the hydrogen Brackett series lines (H-Br)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon namephys.atmol.ionStagecharlambdaVacuum wavelength0.1nmem.wldoubleloggfLogarithm of the product of statistical weight and oscillator strengthphys.absorption.coefffloatEloLower state energyeVphys.energy;phys.atmol.excitationfloatEhiUpper state energyeVphys.energy;phys.atmol.excitationfloatEW/EW15413? Average equivalent width ratio of the line over MnII 15413{AA}spect.line.eqWidth;arith.ratiofloatnullableJ/MNRAS/496/832/table3Radial velocity datae_RV2? Error on RV2km/sstat.errorfloatnullableRV3? Radial velocity of the tertiary starkm/sspect.dopplerVelocfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName2MASS source identifier (HHMMSSss+DDMMSSs)meta.id;meta.maincharHJDHeliocentric Julian date (HJD-245000)dtime.epochdoubleInstInstrument (APOGEE or ARCES)meta.id;instrcharRV1? Radial velocity of the primary starkm/sspect.dopplerVelocfloatnullablee_RV1Error on RV1km/sstat.errorfloatRV2? Radial velocity of the secondary starkm/sspect.dopplerVelocfloatnullablee_RV3? Error on RV3km/sstat.errorfloatnullableJ/MNRAS/496/832/table4Orbital solutions for SB1sPOrbital perioddtime.periodfloatNRVNumber of radial velocity measurementsmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_PError on Pdstat.errorfloatTmaxEpoch of maximum radial velocity (HJD-245000)dtime.epochdoublee_TmaxError on Tmaxdstat.errorfloateOrbital eccentricitysrc.orbital.eccentricityfloate_eError on estat.errorfloatomegaArgument of the periastrondegsrc.orbital.periastronfloate_omegaError on omegadegstat.errorfloatgammaSystemic radial velocitykm/sphys.veloc;pos.heliocentricfloate_gammaError on gammakm/sstat.errorfloatK1Radial velocity semi-amplitude of the primary starkm/sspect.dopplerVelocfloate_K1Error on K1km/sstat.errorfloata1siniSemimajor axis of the primary starAUphys.size.smajAxisfloate_a1siniError on a1siniAUstat.errorfloatfM1M2Mass functionsolMassphys.massfloate_fM1M2Error on fM1M2solMassstat.errorfloatchi2Reduced chi-squaredstat.fit.chi2floatName2MASS source identifier (HHMMSSss+DDMMSSs)meta.id;meta.maincharJ/MNRAS/496/832/table5Orbital solutions for SB2s and SB3se_K? Error on Kkm/sstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName2MASS source identifier (HHMMSSss+DDMMSSsA)meta.id;meta.maincharNRVNumber of radial velocity measurementsmeta.numberintP? Orbital perioddtime.periodfloatnullablee_P? Error on Pdstat.errorfloatnullableTmax? Epoch of maximum radial velocity (HJD-245000)dtime.epochdoublenullablee_Tmax? Error on Tmaxdstat.errorfloatnullablee? Orbital eccentricitysrc.orbital.eccentricityfloatnullablee_e? Error on estat.errorfloatnullableomega? Argument of the periastrondegsrc.orbital.periastronfloatnullablee_omega? Error on omegadegstat.errorfloatnullablegamma? Systemic radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_gamma? Error on gammakm/sstat.errorfloatnullableK? Radial velocity semi-amplitudekm/sspect.dopplerVelocfloatnullableasini? Semimajor axisAUphys.size.smajAxisfloatnullablee_asini? Error on asiniAUstat.errorfloatnullableMsini3? Dynamical masssolMassphys.massfloatnullablee_Msini3? Error on Msini3solMassstat.errorfloatnullablechi2? Reduced chi-squaredstat.fit.chi2floatnullableJ/MNRAS/496/832/table6Summary of double-lined and triple-lined spectroscopic binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName2MASS source identifier (HHMMSSss+DDMMSSs)meta.id;meta.maincharTypeCompanion typesrc.classcharP? Orbital perioddtime.periodfloatnullableM2/M1? Mass ratio M2/M1phys.massfloatnullableu_F2/F1[~] Uncertainty flag on F2/F1meta.code.error;phys.abundcharF2/F1? Flux ratio of MgII 4481{AA}phot.flux;arith.ratiofloatnullableF2/F12? Other value of F2/F1phot.flux;arith.ratiofloatnullablevsini1Rotational velocity of the primary starkm/sphys.veloc.rotatinte_vsini1Error on vsini1km/sstat.errorintu_vsini2[~] Uncertainty flag on vsini2meta.code.errorcharvsini2? Rotational velocity of the secondary starkm/sphys.veloc.rotatintnullablee_vsini2? Error on vsini2km/sstat.errorintnullablevsini3? Rotational velocity of the tertiary starkm/sphys.veloc.rotatintnullablee_vsini3? Error on vsini3km/sstat.errorintnullableNoteRemarksmeta.notechar