J/A+A/697/A30ivo://CDS.VizieR/J/A+A/697/A30doi:10.26093/cds/vizier.36970030CDSNarloch W.Hajdu G.Pietrzynski G.Wielgorski P.Smolec R.Gieren W.,Zgirski B.Gorski M.Karczmarek P.Graczyk D.2025-06-02T20:01:29Z2025-05-01T17:06:46ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyvariable-starsinfrared-photometryvisible-astronomybroad-band-photometryType II Cepheids (T2Ceps), alongside RR Lyrae stars, serve as important distance indicators for old Population II stars due to their period-luminosity (PL) relations. However, few studies of these relations in the Sloan photometric system have been conducted. Our goal is to calibrate PL relations (and their counterparts in Wesenheit magnitudes) in the Sloan-Pan-STARRS gP1rP1iP1 bands for Galactic T2Ceps located in the vicinity of the Sun. We collected data for 16 T2Ceps of the BL Her type and 17 of the W Vir type using 40 cm telescopes of the Las Cumbres Observatory Global Telescope Network. Geometric parallaxes were adopted from Gaia Data Release 3. We have calibrated PL and period-Wesenheit relations for Milky Way BL Her and W Vir stars in the solar neighborhood, as well as for a combined sample of the two types. The relationships derived here will allow the determination of the distances to the T2Ceps that will be discovered by the Legacy Survey of Space and Time survey and, in turn, to probe the extended halo of the Milky Way, as well as the halos of nearby galaxies. To the best of our knowledge, the relations derived in this study are the first for Milky Way T2Ceps in the Sloan bands.2025A&A...697A..30Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/697/A30CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/471/1447 : Ground-based proper motion of 12 nearby GC (Narloch+, 2017)J/ApJ/867/105 : ATLAS all-sky stellar ref. catalog, ATLAS-REFCAT2J/A+A/647/A135 : 35 star clusters and fields in the SMC (Narloch+, 2021)J/A+A/666/A80 : Star clusters and fields in the LMC (Narloch+, 2022)J/A+A/689/A138 : Light curves of RR Lyrae in the Sloan bands (Narloch+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/697/A30https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/697/A30http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/697/A30https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/697/A30https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/697/A30http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/697/A30GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/697/A30/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/697/A30/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/697/A30/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/697/A30/stars?GETtext/xml+votable180.050000true289.87337527.56233330.0055555555555555566/12321 12685 12872 12904 14480 14562 19110 23332 24266 25842 28773 28964 29042 29182 29758 29881 30108 30220 31057 31778 31792 31866 32052 32170 37336 37840 39158 39629 40099 40167 41413 41726 42308 44176 44786 47164 47234 47961 48880https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/697/A30?format=asciiOpticalInfrareddefaultJ/A+A/697/A30/starsList of studied starsDEJ2000Declination (J2000)pos.eq.dec;meta.mainVTypeVariable type (RRLyr, T2Cep or Star)meta.code;src.varcharTypeTypesrc.classcharPerAAVSO perioddtime.perioddoubleT0gEpoch for g banddtime.epochdoublegFSorderFSorder in g bandstat.fit.paramintT0rEpoch for r banddtime.epochdoublerFSorderFSorder in r bandstat.fit.paramintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCShow the light curvesmeta.ref.urlcharStarStar namemeta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainT0iEpoch for i banddtime.epochdoubleiFSorderFSorder in i bandstat.fit.paramintComCommentsmeta.notechar