J/AJ/162/63ivo://CDS.VizieR/J/AJ/162/63doi:10.26093/cds/vizier.51620063CDSNgeow C.-C.Liao S.-H.Bellm E.C.Duev D.A.Graham M.J.Mahabal A.A.,Masci F.J.Medford M.S.Riddle R.Rusholme B.2022-03-21T11:55:52Z2021-12-06T07:05:26ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsmultiple-starsinfrared-photometryvisible-astronomyphotometryIn this work, we aimed to derive the gri-band period-luminosity (PL) and period-luminosity-color (PLC) relations for late-type contact binaries, for the first time, located in globular clusters, using the homogeneous light curves collected by the Zwicky Transient Factory (ZTF). We started with 79 contact binaries in 15 globular clusters, and retained 30 contact binaries in 10 globular clusters that have adequate numbers of data points in the ZTF light curves and are unaffected by blending. Magnitudes at mean and maximum light of these contact binaries were determined using a fourth-order Fourier expansion, while extinction corrections were done using the Bayerstar2019 3D reddening map together with adopting the homogeneous distances to their host globular clusters. After removing early-type and "anomaly" contact binaries, our derived gri-band PL and period-Wesenheit (PW) relations exhibited a much larger dispersion with large errors on the fitted coefficients. Nevertheless, the gr-band PL and PW relations based on this small sample of contact binaries in globular clusters were consistent with those based on a larger sample of nearby contact binaries. Good agreements of the PL and PW relations suggested both samples of contact binaries in the local Solar neighborhood and in the distant globular clusters can be combined and used to derive and calibrate the PL, PW, and PLC relations. The final derived gr-band PL, PW, and PLC relations were much improved over those based on the limited sample of contact binaries in the globular clusters.2021AJ....162...63Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/63CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/150 : Updated catalog of variable stars in globular clusters (Clement+ 2017)J/MNRAS/412/1787 : Physical parameters of 62 eclipsing binaries (Deb+, 2011)J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)J/A+A/549/A86 : Period change 143 SuperWASP eclipsing binaries (Lohr+, 2013)J/MNRAS/434/1220 : Vi light curves of NGC6333 variables (Arellano Ferro+, 2013)J/A+A/566/A43 : EPOCH Project. EROS-2 LMC periodic variables (Kim+, 2014)J/MNRAS/442/2381 : Variable stars in M4 primary field (Nascimbeni+, 2014)J/MNRAS/443/432 : Eclipsing binaries in LMC (Muraveva+, 2014)J/PASP/126/521 : UBVRIJHK photometry of RR Lyrae in M4 (Stetson+, 2014)J/AcA/66/405 : Galacticbulge eclipsing & ellipsoidal bin. (Soszynski+,2016)J/MNRAS/465/2489 : NGC 6401 bulge variable stars (Tsapras+, 2017)J/AJ/155/116 : Globular cluster M14.II. Variable stars (Contreras Pena+, 2018)J/ApJ/859/140 : Multi-band magnitudes for W UMa EB* candidates (Chen+, 2018)J/AJ/158/51 : VR CCD photometry of variable stars in GC NGC4147 (Lata+, 2019)J/MNRAS/482/5138 : Galactic GC mean pms & velocities (Baumgardt+, 2019)J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)J/ApJS/249/31 : Short period spec. &EBs (LPSEB) from LAMOST & PTF (Yang+, 2020)J/MNRAS/493/1996 : NGC 6712 variable stars VI light curves (Deras+, 2020)J/MNRAS/499/4026 : NGC6254 variable stars light curves (Arellano Ferro+, 2020)http://www.ztf.caltech.edu/page/dr3 : ZTF DR3https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/63https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/162/63/table1 (Basic properties of the globular clusters adopted in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/63/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/63/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/63/table1?GETtext/xml+votable180.050000true245.89675-26.525750.0055555555555555566/9436 10321 12405 12943 28067 28959 28973 29248 29377 31115 42955 48434https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/162/63?format=asciiOpticalInfrareddefaultJ/AJ/162/63/table1Basic properties of the globular clusters adopted in this workNameGlobular Cluster namemeta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNstarsNumber of observations in the cluster (table2)meta.numberintnullableRAJ2000[12/21] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainDist[1.97/18.2] Distance, from Baumgardt+, J/MNRAS/482/5138kpcpos.distance;src.orbitalfloate_Dist[0.04/0.57]? Error on Distkpcstat.errorfloatnullableE(B-V)[0/0.72] Foregroung reddening (1)magphot.color.excessfloat[Fe/H][-2.37/-0.78] Metallicity (1)log(Sun)phys.abund.ZfloatNcb[2/20] Number of contact binaries (CBs)meta.numberintNcbZTF[1/12] Number of CBs that contain at least one ZTF data point in any filtermeta.numberintRefReference(s) usedmeta.ref;instr.setupSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/162/63/table2ZTF light curves data for CB in the globular clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterGlobular Cluster namemeta.id.parentcharStarVariable star (contact binary) namemeta.id;meta.maincharFiltZTF filter; g, r or imeta.notecharMJD[58045/59123] Modified Julian Date; JD-2400000.5dtime.epochdoubleindexedomag[12.3/21.9] Observed magnitude in Filtmagphot.mag;em.optfloate_omag[0.01/0.4] Magnitude errormagstat.error;phot.magfloatLCInteractive Plotmeta.ref.urlcharJ/AJ/162/63/refsReferences used for table1BIBBIBcodemeta.bib.bibcodecharCat.Catalog in Viziermeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReferencemeta.ref;pos.frameintAutorMain autor of the referenceobs.observerchar