J/MNRAS/502/4074ivo://CDS.VizieR/J/MNRAS/502/4074doi:10.26093/cds/vizier/bg-fp-3zaCDSMuhie T.D.Dambis A.K.Berdnikov L.N.Kniazev A.Y.Grebel E.K.2026-08-03T07:31:08Z2023-11-16T10:21:48ZCDS support team

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

cds-question@unistra.frvariable-starsmilky-way-galaxyvisible-astronomytrigonometric-parallaxmetallicityproper-motionsradial-velocityinfrared-astronomyThis paper presents results from photometric and statistical-parallax analysis of a sample of 850 field RR Lyrae (RRL) variables. The photometric and spectroscopic data for our sample of RRLs are obtained from (1) our new spectroscopic observations (for 448 RRLs) carried out with the Southern African Large Telescope; (2) our photometric observations using the 1.0-m telescope of the South African Astronomical Observatory, and (3) literature. These are combined with accurate proper motion data from the second data release of the Gaia mission (DR2). This study primarily determines the velocity distribution of solar neighbourhood RRLs, and it also calibrates the zero-points of the RRLs' visual V-band luminosity-metallicity (LZ or M_V_-[Fe/H]) relation and their period-luminosity-metallicity (PLZ) relations in the Wide-field Infrared Survey Explorer W1 and Two-Micron All-Sky Survey Ks bands. We find the bulk velocity of the halo RRLs relative to the Sun to be (U_0_,V_0_,W_0_)_Halo_=(-16+/-7,-219+/-7,-6+/-5)km/s in the direction of Galactic centre, Galactic rotation, and North Galactic pole, respectively, with velocity-dispersion ellipsoids ({sigma}V_R_,{sigma}V_ph_,{sigma}V_{theta}_)_Halo_= (153+/-7,106+/-4,101+/-4)km/s. The corresponding parameters for the disc component are found to be (U_0_,V_0_,W_0_)_Disc_=(-19+/-5,-46+/-5,-14+/-3)km/s and ({sigma}V_R_,{sigma}V_ph_,{sigma}V_{theta}_)_Disc_= (49+/-4,38+/-4,25+/-3)km/s. The calibrated PLZ in W1-, Ks-, and V-band LZ relations are <M_W1_>=-0.824+0.124[Fe/H]-2.381logP_F_, <M_Ks_>=-0.804+0.101[Fe/H]-2.33logP_F_, and <M_V_>=1.041+0.232[Fe/H], respectively. The calibrated PLZ and LZ relations are used to estimate the Galactic Centre distance and the distance modulus of the Large Magellanic Cloud (LMC), which are found to be 7.99+/-0.49kpc and 18.46+/-0.09mag, respectively. All our results are in excellent agreement with available literature based on statistical-parallax analysis, but are considerably more accurate and precise. Moreover, the zero-points of our calibrated PLZ and LZ relations are quite consistent with current results found by other techniques and yield an LMC distance modulus that is within 0.04mag of the current most precise estimate.2021MNRAS.502.4074Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/502/4074CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)II/328 : AllWISE Data Release (Cutri+ 2013)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/MNRAS/435/3206 : Properties of field RR Lyrae variables (Dambis+, 2013)J/ApJS/237/28 : WISE catalog of periodic variable stars (Chen+, 2018)J/MNRAS/441/715 : Mid-infrared study of RR Lyrae stars (Gavrilchenko+, 2014)J/AJ/158/105 : IR photometry of field RR Lyrae variable starshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/502/4074https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/502/4074http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/502/4074https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/502/4074https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/502/4074http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/502/4074GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/502/4074/table2 (850 Galactic field RRL variables data base)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/502/4074/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/502/4074/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/502/4074/table2?GETtext/xml+votable180.050000true5.9295411129.401021940.0055555555555555566/110 168 572 1294 1663 2058 2089 2173 2238 2254 2484 2629 3049 3176 4037 4115 4123 4152 4165 4194 4219 4286 4338 4479 4762 4833 4942 5182 5439 5543 5708 6301 6386 6390-6391 6430 6469 6530 6537 6551 6556 6560-6561 6567 6577 6740 6744 7174 7518 7847 8064 8199 8203 8210 8270 8294 8466 8512 8612 8614 8773 8896 8994 9027 9095 9138 9172 9363 9429 9438 9509 9635 9769 9938 10169 10328 10334 10362 10382 10395 10401 10403 10406 10411 10415 10524 10541 10569 10584 10602 10638 10661 10778 10792 10797 10802 10862 10898 10985 11098 11123 11492 11961 12310 12393 12454 12463 12512 12536 12632 12696 12743 12773 12918 13066 13171 13205 13588 13647 13680 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 16646 16656 16660 16699 16832 16849 16867 16923 17119 17158 17207 17328 17352 17468 17704 17745 17788 17901 17968 18015 18021 18036 18080 18135 18177 18229 18502 18504 18536 18578 18632-18633 18640 18761 18775 18964 19015 19104 19110 19169 19279 19333 19449 19956 20020 20097 20267 20275 20303 20328 20330 20332 20377 20418 20497 20541 20681 20829 20848 20961 20977 20998 21081 21111 21127 21146 21182 21209 21268 21270 21286 21289 21384 21473 21509 21519 21533 21565 21734 21739 21792 21832 21849 21856 21878 21883 21902 21913 21954 21961 22004 22016 22065 22111 22117 22129 22281-22282 22293 22310 22319 22338 22345 22421 22537 22569 22571 22842 22913 23040 23271 23459 23591 23613 23640 24578 24584 24604 24662-24663 24667 24772 24784 24799 24801 24834 24866 24876 24942 24985 25072 25081 25199 25254 25297 25308 25485 25491 25493 25507 25554 25611 25664 25672 25725 25760 25768 25799 25803 25806-25807 25831 25844 25866 25892 25920-25921 25953 25989 26022 26025 26053 26058 26065 26079 26113 26131 26165 26170 26182 26190 26197 26243 26261 26265 26270 26281 26288 26291 26311 26354 26362 26413 26435 26487 26515 26534 26704 26733 26746 26756 26836 26894 26935 26979 26981 26999 27003 27012 27125 27173 27186 27216 27225 27316 27333 27345-27346 27361 27423 27460 27474 27543 27554 27583 27663 27723-27724 27802 27824 27833 27915 27983 27998 28030 28143 28155-28156 28222 28227 28256 28383 28469 28519 28524-28525 28538 28582 28611 28674 28701 28813 28845 28928 28997 29006 29008-29009 29018 29022 29034 29068 29140 29147 29192 29225 29327 29732 29789 29838 29950 30019 30048 30055 30133 30144 30262 30316 30521 30539 30550 30763 30868 30873 30875 30881 30886 30908 30923 30953 30956-30957 30966 30975 31054 31066 31074 31077 31089 31093 31172-31173 31203 31216 31291 31300 31313 31321 31335 31390 31397 31415 31456 31460 31467 31500 31503 31554 31568 31589 31648 31743-31744 31763 31787 31802 31866 31873 31884 32254 32257 32282 32354 32436 32636 32663 32822 32833 32856 32993-32994 33051 33055 33077 33097 33117 33121 33127 33197 33320 33342 33432 33465 33467 33543 33553 33649 33663 33745 33749 33766 33996 34229 34236 34240 34436 34537 34558 34944 35151 35203 35399 35418 35423 35485 35611 35623 35683 35686 35724 35768 35809 35852 35921 36048 36198 36245 36363 36535 36605 36652 36704 36781 36828 36939 36985 37076 37095 37235 37242 37249 37261 37272 37302 37306 37321 37330 37411 37539 37544 37563 37890 37902 37911 37934 37947 37952 37994 38087 38213 38233 38237 38247 38259 38304 38346 38456 38466 38511 38595 38762 38809 38898 38909 38942 38948 39152 39313 39316 39403 39475 39885 39935 40060 40203 40227 40303 40475 40496 40506 40552-40553 40564 40581 40592 40598 40626 40651 40722 40767-40769 40806 40882 40911 40962 40988 40998 41022 41064 41079 41081 41119 41147 41167 41174 41183 41191 41200 41217 41219 41227 41231 41248 41253 41260 41273 41283 41285 41299 41318 41335 41345 41351 41435 41438 41456 41502 41510 41520 41524 41544 41732 41865 41901 41917 41946 41991 42018 42024 42030-42032 42041 42046 42053 42056 42059 42062-42063 42068 42083 42120 42128 42245 42260 42604 42635 42672 42739 42749 42751 42865 42870 42934 42942 43049 43078 43098 43232 43405 43419 43474 43476 43491 43558 43564 43654 43666 43681 43719 43751 43778 43788 43794 43813 43888 43938 43977 43984 44108 44115 44146 44161 44173-44174 44181 44241-44242 44245 44247 44289 44312 44326 44334 44349 44352 44384 44425 44434 44447 44477 44498-44499 44510 44513 44557 44559 44595 44621 44640 44742 44836 44838 44897 44914 44960 44978 44991 45038 45043 45051 45062 45086 45152 45164 45231 45241-45242 45324 45337 45400 45584 45626 45664 45676 45718 45741 45765 45796 45892 45963 45966 45988 45992 46059 46069 46082 46130 46204 46246 46293 46327 46373 46454 46520 46632 46641 46650 46655 46755-46756 46786 46824 46923 46975 47043 47074 47162 47190 47217 47228 47239 47245 47261-47262 47273 47281 47327 47340 47342 47407 47432 47435 47467-47468 47527 47618 47620 47639 47674 47711 47734 47776 47821 47856 47913 47959 48053 48058 48096 48108 48111 48113 48128 48131 48137 48228 48290 48315 48398 48459 48911 48916 49086 491025.3455714667354156e-20 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/502/4074?format=asciiOpticalInfrareddefaultJ/MNRAS/502/4074/table2850 Galactic field RRL variables data baseSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGCVS variable namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPeriodVariability perioddsrc.vardoubleTypeRR Lyrae typemeta.code;src.varcharVmagV-band intensity-mean magnitudemagphot.mag;em.opt.Vdoubler_VmagReference for Vmag (1)meta.ref;pos.frameintAVV-band interstellar extinctionmagphys.absorptiondouble[Fe/H]Fe/H abundance ratio on the Zinn & West (1984ApJS...55...45Z) scalephys.abund.Fe;arith.ratiodoubler_[Fe/H]Reference for [Fe/H] (1)meta.refintKsmagKs-band magnitudemagphot.mag;em.IR.Kdoublee_KsmagError on Ksmagmagstat.error;phot.magdoubler_KsmagReference for Ksmag (1)meta.ref;pos.frameintW1magWISE W1 (3.4um) band magnitudemagphot.mag;em.IR.3-4umfloate_W1mag? Error on W1magmagstat.error;phot.magfloatnullabler_W1magReference for W1mag (1)meta.refintRVRadial velocitykm/sphys.veloc;pos.heliocentricdoublee_RVError on RVkm/sstat.errordoubler_RVReference for RV (1)meta.ref;pos.frameintpmRAProper motion in right ascension from Gaia DR2mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in declination from Gaia DR2mas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatplxParallax from Gaia DR2maspos.parallax.trigfloate_plx? Error on plxmasstat.error;pos.parallaxfloatnullable