J/MNRAS/492/2161ivo://CDS.VizieR/J/MNRAS/492/2161doi:10.26093/cds/vizier.74922161CDSZinn R.Chen X.Layden A.C.Casetti-Dinescu D.I.2024-08-20T20:15:30Z2023-05-30T15:41:59ZCDS support team

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

cds-question@unistra.frvariable-starsmilky-way-galaxyvisible-astronomyspectroscopyphotometryline-intensitiesMeasurements of [Fe/H] and radial velocity are presented for 89 RR Lyrae (RRL) candidates within 6kpc of the Sun. After the removal of two suspected non-RRLs, these stars were added to an existing data base, which yielded 464 RRLs with [Fe/H] on a homogeneous scale. Using data from the Gaia satellite (Data Release 2), we calculated the positions and space velocities for this sample. These data confirm the existence of a thin disc of RRL with [{alpha}/Fe]~solar. The majority of the halo RRLs with large total energies have near-zero angular momenta about the Z-axis. Kinematically, these stars closely resemble the Gaia-Sausage/Gaia-Enceladus stars that others have proposed are debris from the merger of a large galaxy with the Milky Way. The metallicity and period distributions of the RRLs and their positions in the period-amplitude diagram suggest that this disrupted galaxy was as massive as the Large Magellanic Cloud and possibly greater.2020MNRAS.492.2161Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/492/2161CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/264 : ASAS Variable Stars in Southern hemisphereJ/AJ/108/1016 : Kinematics of local RR lyrae stars. I. (Layden, 1994)J/MNRAS/435/3206 : Properties of field RR Lyrae variables (Dambis+, 2013)I/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/492/2161https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/492/2161http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/492/2161https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/492/2161https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/492/2161http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/492/2161GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/492/2161/table1 (Coordinates and reddening)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/492/2161/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/492/2161/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/492/2161/table1?GETtext/xml+votable180.050000true1.5081394-36.90417040.005555555555555556Cone search capability for table J/MNRAS/492/2161/table5 (The Local RR Lyrae stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/492/2161/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/492/2161/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/492/2161/table5?GETtext/xml+votable180.050000true5.9295069429.400926940.0055555555555555566/110 572 1294 1663 2058 2089 2173 2238 2254 2484 2629 3049 3176 4037 4152 4165 4219 4286 4338 4479 4762 4828 4833 4942 5182 5543 5708 6301 6430 6469 6537 6560 6567 6744 7174 7518 7847 8064 8294 8466 8512 8612 8614 8773 8896 8994 9027 9095 9138 9172 9363 9429 9438 9509 9635 9769 9938 10169 10328 10334 10362 10382 10415 10524 10541 10569 10584 10602 10638 10661 10792 10797 10802 10862 10898 10985 11098 11123 11492 11961 12463 12512 12536 12696 12743 12773 12918 13066 13171 13205 13588 13647 13905 14373 14504 14857 14874 14918 14939 14994 14996 15043 15106 15120 15220 15281 15714 16018 16022 16126-16127 16308 16342 16408 16411 16553 16602 16699 16849 16867 16923 17158 17328 17745 18080 18177 18502 18536 18578 18633 18964 19104 19110 19169 19333 19449 19956 20020 20097 20267 20275 20303 20497 20541 20681 20793 20998 21127 21146 21182 21533 21878 21961 22111 22338 22571 22842 23271 24724 24772 24866 24913 25060 25120 25199 25491 25611 25768 25799 25803 25807 25866 25879 25953 26065 26079 26131 26170 26281 26288 26413 26487 26515 26733 26756 26807 26894 26981 27012 27125 27148 27333 27361 27474 27543 27554 27583 27824 27833 27915 27983 27998 28030 28143 28155 28222 28227 28256 28383 28469 28525 28582 28674 28701 28813 29009 30019 30055 30868 30923 30957 31054 31335 31390 31415 31456 31648 31743 31787 31866 31884 32254 32257 32282 32354 32436 32636 32663 32822 32856 32903 32911 32994 33033 33051 33072 33117 33121 33126-33127 33197 33283 33294 33342 33411 33415 33432 33465 33467 33516 33553 33598 33611 33663 33665 33686 33745 33760 33766 33825 33994 33996 34025 34063 34121 34229 34236 34240 34423 34492 34537 34583 34596 34598 34712 34745 34772 34797 34880 34944-34945 35151 35196 35399 35418 35423 35472 35611 35637 35686 35724 35768 35809 35852 35868 35907 35921 35948 36040 36048 36065 36196 36198 36363 36605 36630 36704 36781 36894 36939 37042 37095 37302 37456 37530 37544 37626 37787 37911 37934 37952 38065 38087 38233 38304 38329 38456 38511 38595 38770 38809 38942 39003 39138 39152 39211 39333 39475 39655 39762 39946 39970 40066 40475 40553 40592 40651 40722 40767-40768 40806 40882 40911 40924 40962 40988 40998 41022 41064 41081 41174 41191 41200 41217 41219 41227 41231 41248 41260 41283 41285 41318 41510 41991 42053 42260 42672 43405 43491 43558 43794 43888 43977 44242 44312 44326 44498 44559 44640 44914 44991 45062 45086 45152 45164 45241 45324 45337 45676 45741 45765 45796 45963 45992 45994 46002 46059 46069 46130 46204 46240 46246 46327 46373 46375 46394 46482 46632 46641 46650 46686 46755-46756 46824 47015 47273 47327 47342 47419 47435 47467-47468 47527 47618 47645 47674 47776 47821 47856 47959 47995 48069 48113 48131 48137 48228 48290 48459 48715 48911 48916 49086 49102https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/492/2161?format=asciiOpticaldefaultJ/MNRAS/492/2161/table1Coordinates and reddeningSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameASAS name (JHHMMSS+DDMM.m)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatE(B-V)Colour excessphot.color.excessfloatONameAlternative namemeta.idcharn_Name[1/3]? Note on the object (1)meta.noteintnullableJ/MNRAS/492/2161/table2ASAS photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameASAS name (JHHMMSS+DDMM.m)meta.id;meta.maincharONameAlternative namemeta.idcharPeriodVariability perioddsrc.vardoublee_PeriodError on Period1e-06dstat.error;time.periodintVmagMean V magnitudemagphot.mag;em.opt.VfloatVmaxMagnitude V at maximum brightnessmagphot.mag;em.opt.VfloatVminMagnitude V at minimum brightnessmagphot.mag;em.opt.VfloatRMSRMS scatter of the observed points around the template Tmagstat.error;phot.magfloatT[1/7] Best-fitting template (1)meta.codeintEmaxEpoch of maximum lightdtime.epochdoubleNobsNumber of photometric observationsmeta.numberintJ/MNRAS/492/2161/table3RRL standardized equivalent widthse_PhiError on Phistat.errorfloatEWK0CaII K equivalent width0.1nmspect.line.eqWidthfloate_EWK0Error on EWK00.1nmstat.errorfloatEWHdH{delta} equivalent width0.1nmspect.line.eqWidthfloate_EWHdError on EWHd0.1nmstat.errorfloatEWHgH{gamma} equivalent width0.1nmspect.line.eqWidthfloate_EWHgError on EWHg0.1nmstat.errorfloatEWHbH{beta} equivalent width0.1nmspect.line.eqWidthfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameASAS name (JHHMMSS+DDMM.m)meta.id;meta.maincharHJDMean Heliocentric Julian Date of the visitdtime.epochdoublePhiPhotometric phasephotfloate_EWHbError on EWHb0.1nmstat.errorfloatS/NSignal to noise ratiostat.snrfloatNsp[1/6] Number of spectra obtained in the visitmeta.numberintJ/MNRAS/492/2161/table4Final spectroscopic datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameASAS name (JHHMMSS+DDMM.m)meta.id;meta.maincharONameAlternative namemeta.idcharEWKintEquivalent width of the interstellar CaII K line as described in Beers (1990AJ.....99..323B)0.1nmspect.line.eqWidthfloatEWHbzH{beta} equivalent width corrected for interstellar contamination (1)0.1nmspect.line.eqWidthfloat[Fe/H]Mean Fe/H abundance ratio for each visitphys.abund.Fe;stat.meanfloate_[Fe/H]Weighted error on [Fe/H]stat.error;phys.abund.Fefloats_[Fe/H]Standard deviation of the mean of the [Fe/H] values from each visit around the meanstat.stdev;stat.meanfloatNvisEffective number of visits usedmeta.numberfloatvCM? Centre-of-mass velocitykm/sphys.velocintnullablee_vCM? Error on vCMkm/sstat.errorintnullableNfit? Number of spectra used in the fitmeta.numberintnullableComCommentmeta.notecharJ/MNRAS/492/2161/table5The Local RR Lyrae starsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameRR Lyrae namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPeriodVariability perioddsrc.vardoubleAmpAmplitude in the V pass-bandmagphot.magfloatType[ab/c ] Variable typesrc.classcharVmagMean V magnitudemagphot.mag;em.opt.VfloatVextInterstellar extinctions in the V pass-band from Dambis et al. (2013MNRAS.435.3206D, Cat. J/MNRAS/435/3206)magphys.absorptionfloat[Fe/H]Fe/H abundance ratiophys.abund.Fe;arith.ratiofloatr_[Fe/H][1/4] Source of the metallicity measurement (1)meta.refintNNumber of independent studies that contributed to the listed [Fe/H] valuemeta.numberintvCMCentre-of-mass velocitykm/sphys.velocfloate_vCMError on vCMkm/sstat.errorfloatr_vCM[1/2] Reference for vCM (2)meta.ref;pos.frameintJ/MNRAS/492/2161/table6The Galactic positions and the kinematics of the starsYGalactic position Ykpcpos.distance;pos.cartesian.y;pos.galacticfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableZGalactic position Zkpcpos.distance;pos.cartesian.z;pos.galacticfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameRR Lyrae namemeta.id;meta.maincharDistDistancekpcpos.distancefloate_DistError on Distkpcstat.errorfloatXGalactic position Xkpcpos.distance;pos.cartesian.x;pos.galacticfloatVrRadial component of velocity in cylindrical coordinateskm/sspect.dopplerVelocinte_VrError on Vrkm/sstat.errorintVphiRotational component of velocity in cylindrical coordinateskm/sphys.veloc.rotatinte_VphiError on Vphikm/sstat.errorintVzVertical component of velocity in cylindrical coordinateskm/sphys.velocinte_VzError on Vzkm/sstat.errorintLzAngular momentum in z-directionkpc.km/sphys.angMomentuminte_LzError on Lzkpc.km/sstat.errorintLTAngular momentum perpendicular to the z-axis (=sqrt(L_X_^2^+L_Y_^2^))kpc.km/sphys.angMomentuminte_LTError on LTkpc.km/sstat.errorintEtotSum of the kinetic and potential energy of the star100000km**2.s**-2phys.energyfloat