J/MNRAS/530/3391ivo://CDS.VizieR/J/MNRAS/530/3391doi:10.26093/cds/vizier.75303391CDSArdern-Arentsen A.Monari G.Queiroz A.B.A.Starkenburg E.Martin N.F.,Chiappini C.Aguado D.S.Belokurov V.Carlberg R.Monty S.Myeong G.,Schultheis M.Sestito F.Venn K.A.Vitali S.Yuan Z.Zhang H.,Buder S.Lewis G.F.Oliver W.H.Wan Z.Zucker D.B.2024-11-06T20:35:25Z2024-05-10T09:05:49ZCDS support team

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

cds-question@unistra.frmilky-way-galaxychemically-peculiar-starsmetallicityvisible-astronomyeffective-temperaturestellar-distanceThe oldest stars in the Milky Way (born in the first few billion years) are expected to have a high density in the inner few kpc, spatially overlapping with the Galactic bulge. We use spectroscopic data from the Pristine Inner Galaxy Survey (PIGS) to study the dynamical properties of ancient, metal-poor inner Galaxy stars. We compute distances using StarHorse, and orbital properties in a barred Galactic potential. With this paper, we release the spectroscopic AAT/PIGS catalogue (13235 stars). We find that most PIGS stars have orbits typical for a pressure-supported population. The fraction of stars confined to the inner Galaxy decreases with decreasing metallicity, but many very metal-poor stars (VMP, [Fe/H]<-2.0) stay confined (~ 60% stay within 5 kpc). The azimuthal velocity v_phi_ also decreases between [Fe/H]=-1.0 and -2.0, but is constant for VMP stars (at ~40km/s). The carbon-enhanced metal- poor (CEMP) stars in PIGS appear to have similar orbital properties compared to normal VMP stars. Our results suggest a possible transition between two spheroidal components - a more metal-rich, more concentrated, faster rotating component, and a more metal-poor, more extended and slower/non-rotating component. We propose that the former may be connected to pre-disc in-situ stars (or those born in large building blocks), whereas the latter may be dominated by contributions from smaller galaxies. This is an exciting era where large metal-poor samples, such as in this work (as well as upcoming surveys, e.g., 4MOST), shed light on the earliest evolution of our Galaxy.2024MNRAS.530.3391Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/530/3391CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/530/3391https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/530/3391http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/530/3391https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/530/3391https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/530/3391http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/530/3391GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/530/3391/tabled2 (PIGS stellar parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/530/3391/tabled2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/530/3391/tabled2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/530/3391/tabled2?GETtext/xml+votable180.050000true250.62136681191-28.850999477630.0055555555555555564/1799 5/7191 7194-7195 7217 7220 7232 7234-7235 7240 7242 7264 7296 7302 7304-7306 7311 7322-7324 7326 10709 10711 10713 10716-10717 11965 12003 12008-12010 6/28751 28757-28759 28762-28763 28771 28773-28775 28842-28843 28865 28867 28884-28885 28932 28934 28952 28954-28955 28964-28966 28972 28974 28976 29060 29062 29064 29191-29192 29194-29195 29197 29202-29203 29229 29232 29234-29235 29238-29241 29243 29275 29278 29282-29283 29285-29287 29300-29302 29308 29310 29392-29393 29396 42831 42835 42841-42843 42851 42857 42860-42861 42873 42876-42877 42879 47868-47869 47871 48011 48044 48046https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/530/3391?format=asciiOpticaldefaultJ/MNRAS/530/3391/tabled2PIGS stellar parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldAAT field name (see Table D1), FieldDDD.d+DD.d (fieldname)obs.fieldcharGaiaDR3Gaia DR3 source ID (source_id)meta.idDE_ICRSDeclination from (ICRS) at Ep=2016.0 Gaia DR3 (dec)degpos.eq.dec;meta.mainindexedgoodU[false/true ] if True, star passes all Arentsen et al. (2020MNRAS.496.4964A) quality flags (ULySS case) (good_ulyss)meta.code.qualcharStarUnique Pristine target name, Pristine_HHMMSS.ss+DDMMSS.s (starname)meta.id;meta.mainchardouble[false/true ] if True, the CaT spectrum is clearly double-lined (most likely chance-alignment) (double)meta.codecharRA_ICRSRight ascension (ICRS) at Ep=2016.0 from Gaia DR3 (ra)degpos.eq.ra;meta.mainindexedGLON[] Galactic longitude (l)degpos.galactic.lonGLATGalactic latitude (b)degpos.galactic.latdoubleE(B-V)? Reddening E(B-V) from Green et al. (2019ApJ...887...93G) (ebv_green19)phot.color.excessdoublenullableSNR4000-4100Signal-to-noise ratio between 3993-4093 (SNR_4000_4100)stat.snrdoubleSNR5000-5100Signal-to-noise ratio between 4993-5093 (SNR_5000_5100)stat.snrdoubleSNRCaTSignal-to-noise ratio in the calcium triplet (red arm) (SNR_CaT)stat.snrdoubleRVFXCOR radial velocity (rv)km/sphys.veloc;pos.heliocentricdoublee_RVFXCOR radial velocity uncertainty (including 2km/s floor) (rv_err)km/sstat.errordoubleTeffFFERRE effective temperature (teff_ferre)Kphys.temperature.effectivedoublee_TeffFtotFERRE effective temperature uncertainty (including 107K floor) (eteff_ferre_tot)Kstat.errordoubleloggFFERRE surface gravity (logg_ferre)log(cm.s**-2)phys.gravitydoublee_loggFtotFERRE surface gravity uncertainty (including 0.24 floor) (elogg_ferre_tot)log(cm.s**-2)stat.errordouble[Fe/H]FFERRE metallicity (feh_ferre)phys.abund.Fedoublee_[Fe/H]FtotFERRE metallicity uncertainty (including 0.13 floor) (efeh_ferre_tot)stat.error;phys.abund.Fedouble[C/Fe]FFERRE carbon over iron abundance (cfe_ferre)phys.abunddoublee_[C/Fe]FtotFERRE carbon over iron abundance uncertainty (including 0.20 floor) (ecfe_ferre_tot)stat.error;phys.abunddoublemccor100? median Placco et al. (2014ApJ...797...21P) evolutionary carbon correction (mccor100)arith.factordoublenullables_nccor100? standard deviation of Placco et al. (2014ApJ...797...21P) evolutionary carbon correction (sccor100)arith.factor;time.agedoublenullablechi2FFERRE log chi square (chi2_ferre)stat.fit.chi2doubleTeffU? ULySS effective temperature (teff_ulyss)Kphys.temperature.effectivedoublenullablee_TeffUtot? ULySS effective temperature uncertainty (including 107 K floor) (eteff_ulyss_tot)Kstat.errordoublenullableloggU? ULySS surface gravity (logg_ulyss)log(cm.s**-2)phys.gravitydoublenullablee_loggUtot? ULySS surface gravity uncertainty (including 0.24 floor) (elogg_ulyss_tot)log(cm.s**-2)stat.errordoublenullable[Fe/H]U? ULySS metallicity (feh_ulyss)phys.abund.Fedoublenullablee_[Fe/H]Utot? ULySS metallicity uncertainty (including 0.13 floor) (efeh_ulyss_tot)stat.error;phys.abund.FedoublenullablesrrU? ULySS signal-to-residual ratio (srr_ulyss)stat.fit.omcdoublenullablesigU? ULySS broadening width (sig_ulyss)spect.line.broaddoublenullablefbpC2aU? ULySS fraction of rejected pixels in the fit between 4600-4800{AA} (f_badpix_C2a_ulyss)stat.fit.paramdoublenullablefbpC2bU? ULySS fraction of rejected pixels in the fit between 5000-5200{AA} (f_badpix_C2b_ulyss)stat.fit.paramdoublenullablegoodF[false/true ] if True, star passes all Arentsen et al. (2020MNRAS.496.4964A) quality flags (FERRE case) (good_ferre)meta.code.qualcharJ/MNRAS/530/3391/tabled3PIGS distances and orbital propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarUnique Pristine target name, Pristine_HHMMSS.ss+DDMMSS.s (starname)meta.id;meta.mainchar[Fe/H]FERRE metallicity (repeated from Table D2 for convenience) (feh)phys.abund.Zdoubledist1616th percentile StarHorse distance (dist16)kpcpos.distancedoublezmax50? Median Maximum vertical distance to the Galactic plane (zmax50)kpcpos.cartesian.z;pos.galacticdoublenullablezmax84? 84th percentile Maximum vertical distance to the Galactic plane (zmax84)kpcpos.cartesian.z;pos.galacticdoublenullableecc16? 16th percentile Orbital eccentricity (ecc16)src.orbital.eccentricitydoublenullabledist50Median StarHorse distance (dist50)kpcpos.distancedoubledist8484th percentile StarHorse distance (dist84)kpcpos.distancedoublex1616th percentile Galactic x position (x16)kpcpos.distance;pos.cartesian.x;pos.galacticdoublex50Median Galactic x position (x50)kpcpos.distance;pos.cartesian.x;stat.mediandoublex8484th percentile Galactic x position (x84)kpcpos.distance;pos.cartesian.x;pos.galacticdoubley1616th percentile percentile Galactic y position (y16)kpcpos.distance;pos.cartesian.y;pos.galacticdoubley50Median Galactic y position (y50)kpcpos.distance;pos.cartesian.y;stat.mediandoubley8484th percentile Galactic y position (y84)kpcpos.distance;pos.cartesian.y;pos.galacticdoublez1616th percentile Galactic z position (z16)kpcpos.distance;pos.cartesian.z;pos.galacticdoublez50Median Galactic z position (z50)kpcpos.distance;pos.cartesian.z;stat.mediandoublez8484th percentile Galactic z position (z84)kpcpos.distance;pos.cartesian.z;pos.galacticdoublevR1616th percentile Galactocentric radial velocity (vR16)km/sspect.dopplerVeloc;pos.galactocentricdoublevR50Median Galactocentric radial velocity (vR50)km/sspect.dopplerVeloc;stat.mediandoublevR8484th percentile Galactocentric radial velocity (vR84)km/sspect.dopplerVeloc;pos.galactocentricdoublevphi1616th percentile Galactocentric azimuthal velocity (vphi16)km/sphys.veloc;pos.galactocentricdoublevphi50Median Galactocentric azimuthal velocity (vphi50)km/sphys.veloc;em.wl.central;stat.mediandoublevphi8484th percentile Galactocentric azimuthal velocity (vphi84)km/sphys.veloc;pos.galactocentricdoublevz1616th percentile Galactocentric vertical velocity (vz16)km/sphys.veloc;pos.galactocentricdoublevz50Median Galactocentric vertical velocity (vz50)km/sphys.veloc;em.wl.central;stat.mediandoublevz8484th percentile Galactocentric vertical velocity (vz84)km/sphys.veloc;pos.galactocentricdoubleapo16? 16th percentile Galactic apocentre (apo16)kpcpos.distance;pos.galactocentricdoublenullableapo50? Median Galactic apocentre (apo50)kpcpos.distance;pos.galactocentricdoublenullableapo75? 75th percentile Galactic apocentre (apo75)kpcpos.distance;pos.galactocentricdoublenullableapo84? 84th percentile Galactic apocentre (apo84)kpcpos.distance;pos.galactocentricdoublenullableperi16? 16th percentile Galactic pericentre (peri16)kpcpos.distance;pos.galactocentricdoublenullableperi50? Median Galactic pericentre (peri50)kpcpos.distance;pos.galactocentricdoublenullableperi84? 84th percentile Galactic pericentre (peri84)kpcpos.distance;pos.galactocentricdoublenullablezmax16? 16th percentile Maximum vertical distance to the Galactic plane (zmax16)kpcpos.cartesian.z;pos.galacticdoublenullableecc50? Median Orbital eccentricity (ecc50)src.orbital.eccentricity;stat.mediandoublenullableecc84? 84th percentile Orbital eccentricity (ecc84)src.orbital.eccentricitydoublenullableJR16? 16th percentile Radial action (JR16)kpc.km/sarith.grad;phys.velocdoublenullableJR50? Median Radial action (JR50)kpc.km/sarith.grad;phys.velocdoublenullableJR84? 84th percentile Radial action (JR84)kpc.km/sarith.grad;phys.velocdoublenullableJz16? 16th percentile Vertical action (Jz16)kpc.km/sarith.grad;phys.velocdoublenullableJz50? Median Vertical action (Jz50)kpc.km/sarith.grad;phys.velocdoublenullableJz84? 84th percentile Vertical action (Jz84)kpc.km/sarith.grad;phys.velocdoublenullableJphi1616th percentile Angular momentum (Jphi16)kpc.km/sphys.angMomentumdoubleJphi50Median Angular momentum (Jphi50)kpc.km/sphys.angMomentum;stat.mediandoubleJphi8484th percentile Angular momentum (Jphi84)kpc.km/sphys.angMomentumdoubleEnergy1616th percentile Energy (Energy16)kpc.km**2.s**-2phys.energydoubleEnergy50Median Energy (Energy50)kpc.km**2.s**-2phys.energydoubleEnergy8484th percentile Energy (Energy84)kpc.km**2.s**-2phys.energydoubleJ/MNRAS/530/3391/tableauxAll 50 draws of PIGS distances and orbital propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarUnique Pristine target name (starname), Pristine_HHMMSS.ss+DDMMSS.s (ID_pigs)meta.id;meta.maincharSample[0/49] Sample number for this star (Sample_ID)meta.idintxGalactic x position (x)kpcpos.distance;pos.cartesian.x;pos.galacticdoubleyGalactic y position (y)kpcpos.distance;pos.cartesian.y;pos.galacticdoublezGalactic z position (z)kpcpos.distance;pos.cartesian.z;pos.galacticdoublevRGalactocentric radial velocity (vR)km/sspect.dopplerVeloc;pos.galactocentricdoublevphiGalactocentric azimuthal velocity (vphi)km/sphys.veloc;pos.galactocentricdoublevzGalactocentric vertical velocity (vz)km/sphys.veloc;pos.galactocentricdoubleapo? Galactic apocentre (apo)km/spos.distance;pos.galactocentricdoublenullableperi? Galactic pericentre (peri)kpcpos.distance;pos.galactocentricdoublenullablezmax? Maximum vertical distance to the Galactic plane (zmax)kpcpos.cartesian.z;pos.galacticdoublenullableecc? Orbital eccentricity (ecc)src.orbital.eccentricitydoublenullableJR? Radial action (JR)kpc.km/sarith.grad;phys.velocdoublenullableJphiAngular momentum (Jphi)kpc.km/sphys.angMomentumdoubleJz? Vertical action (Jz)kpc.km/sarith.grad;phys.velocdoublenullableEnergyEnergy (Energy)kpc.km**2.s**-2phys.energydouble