J/ApJ/838/107ivo://CDS.VizieR/J/ApJ/838/107doi:10.26093/cds/vizier.18380107CDSSesar B.Fouesneau M.Price-Whelan A.M.Bailer-Jones C.A.L.Gould A.,Rix H.-W.2018-01-30T11:50:40Z2017-12-06T15:57:48ZCDS support team

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

cds-question@unistra.frvariable-starsstellar-distanceinfrared-sourcesPulsating stars, such as Cepheids, Miras, and RR Lyrae stars, are important distance indicators and calibrators of the "cosmic distance ladder," and yet their period-luminosity-metallicity (PLZ) relations are still constrained using simple statistical methods that cannot take full advantage of available data. To enable optimal usage of data provided by the Gaia mission, we present a probabilistic approach that simultaneously constrains parameters of PLZ relations and uncertainties in Gaia parallax measurements. We demonstrate this approach by constraining PLZ relations of type ab RR Lyrae stars in near-infrared W1 and W2 bands, using Tycho-Gaia Astrometric Solution (TGAS) parallax measurements for a sample of ~100 type ab RR Lyrae stars located within 2.5kpc of the Sun. The fitted PLZ relations are consistent with previous studies, and in combination with other data, deliver distances precise to 6% (once various sources of uncertainty are taken into account). To a precision of 0.05mas (1{sigma}), we do not find a statistically significant offset in TGAS parallaxes for this sample of distant RR Lyrae stars (median parallax of 0.8mas and distance of 1.4kpc). With only minor modifications, our probabilistic approach can be used to constrain PLZ relations of other pulsating stars, and we intend to apply it to Cepheid and Mira stars in the near future.2017ApJ...838..107Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/838/107CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/311 : WISE All-Sky Data Release (Cutri+ 2012)I/337 : Gaia DR1 (Gaia Collaboration, 2016)J/A+A/330/515 : RR Lyrae parallaxes & proper motions (Fernley+ 1998)J/AJ/142/187 : HST obs. of 7 Pop.II variable stars (Benedict+, 2011)J/ApJ/776/26 : RRab stars in the Orphan stream distances (Sesar+, 2013)J/MNRAS/439/3765 : RR Lyrae in 15 Galactic globular clusters (Dambis+, 2014)J/MNRAS/441/715 : Mid-infrared study of RR Lyrae stars (Gavrilchenko+, 2014)J/MNRAS/440/L96 : RR Lyrae AllWise photometry (Klein+, 2014)J/ApJ/832/L18 : Gaia's DR1 parallaxes vs previous measurements (Jao+, 2016)J/ApJ/831/L6 : Eclipsing binary parallaxes with Gaia data (Stassun+, 2016)J/A+A/605/A79 : TGAS Cepheids and RR Lyrae stars (Gaia Collaboration+, 2017)http://www.cosmos.esa.int/web/gaia/ : Gaia home pagehttp://www.univie.ac.at/tops/blazhko/Blazhkolist.html : List of knownhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/838/107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/838/107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/838/107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/838/107https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/838/107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/838/107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/838/107/table2 (Distances to RR Lyrae Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/838/107/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/838/107/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/838/107/table2?GETtext/xml+votable180.050000true291.366303942.78435920.0055555555555555566/110 2089 2484 4286 4762 4942 6301 6567 6744 7174 7518 8466 8773 9027 9138 9363 9509 9769 9938 10328 10362 10541 10584 10602 10638 10898 10985 11098 11123 11492 11961 12512 12743 12773 15106 15220 16018 16022 16126 16602 16849 16867 16923 17158 17328 19110 19169 20097 20267 20303 20497 21127 21146 21533 21961 22111 24772 25199 25491 25611 25803 25953 26079 26131 26281 26487 26515 26756 26981 27824 27833 27998 28143 28155 28227 28582 30055 30923 31743 32636 32663 33342 33465 33996 34240 34537 35151 35423 35611 35686 36363 36605 36704 36781 38087 38809 39152 40651 41022 41191 42053 42672 43405 44326 44498 45086 45164 45676 45796 46069 47342 47618 47821 48113 48228 48459 48911 48916https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/838/107?format=asciiInfrareddefaultJ/ApJ/838/107/table2Distances to RR Lyrae StarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameRR Lyrae identifiermeta.id;meta.maincharf_Name[*] Flag on Name (1)meta.codecharDist[4/993] Heliocentric distancepcpos.distancefloate_Dist[10/167] Uncertainty in Distpcstat.errorfloatRRLcatDisplay data within 3" from Klein+, 2014, J/MNRAS/440/L96 and Fernley+, 1998, J/A+A/330/515meta.ref.urlcharWISEDisplay the WISE data (I/311) within 2.5"meta.ref.urlcharGaiaDisplay the TGAS Gaia data (I/337) within 3.5" (Note that catalog I/337 is at Epoch 2015)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main