J/MNRAS/427/1517ivo://CDS.VizieR/J/MNRAS/427/1517doi:10.26093/cds/vizier.74271517CDSSodor A.Hajdu G.Jurcsik J.Szeidl B.Posztobanyi K.Hurta Zs.,Belucz B.Kun E.2024-07-19T20:17:02Z2013-10-11T09:19:54ZCDS support team

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

cds-question@unistra.frvariable-starsccd-photometryinfrared-photometryvisible-astronomybroad-band-photometryWe present a thorough analysis of multicolour CCD observations of two modulated RRab-type variables, XY And and UZ Vir. These Blazhko stars show relatively simple light-curve modulation with the usual multiplet structures in their Fourier spectra. One additional, independent frequency with linear-combination terms of the pulsation frequency is also detected in the residual spectrum of each of the two stars. The amplitude and phase relations of the triplet components are studied in detail. Most of the epoch-independent phase differences show a slight, systematic colour dependence. However, these trends have opposite signs in the two stars. The mean values of the global physical parameters and their changes with the Blazhko phase are determined, utilizing the inverse photometric method (IPM). The modulation properties and the IPM results are compared for the two variables. The pulsation period of XY And is the shortest when its pulsation amplitude is the highest, while UZ Vir has the longest pulsation period at this phase of the modulation. Despite this contrasting behaviour, the phase relations of the variations in their mean physical parameters are similar. These results do not agree with the predictions of the Blazhko model of Stothers.2012MNRAS.427.1517Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/427/1517CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/107/679 : AH Cam (Silbermann+, 1994)J/A+A/430/1049 : RR Gem BV(RI)c differential photometry (Jurcsik+, 2005)J/A+A/469/1033 : UBVRI light curves of RR Gem (Sodor+, 2007)J/MNRAS/391/164 : MW Lyr BV(RI)c light curves (Jurcsik+, 2008)J/MNRAS/397/350 : DM Cyg BVIc light curves (Jurcsik+, 2009)J/MNRAS/411/1585 : CZ Lac multiperiodic Blazhko modulation (Sodor+, 2011)J/A+A/520/A108 : CoRoT 101128793 light curves (Poretti+, 2010)J/MNRAS/415/1577 : CoRoT 105288363 Blazhko modulation (Guggenberger+, 2011)J/A+A/527/A146 : CoRoT 0105288363 light curves (Chadid+, 2011)J/MNRAS/420/1333 : NGC 5024 RR Lyrae VI light curves (Arellano Ferro+, 2012)J/A+A/549/A101 : Known Galactic field Blazhko stars (Skarka, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/427/1517https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/427/1517http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/427/1517https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/427/1517https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/427/1517http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/427/1517GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/MNRAS/427/1517/table5Light-curve solution of XY And in V and Ic bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFrequency identification (G1)meta.id;em.freqcharFreqFrequency valued**-1em.freqdoubleAVAmplitude in V band for this frequencymagphot.mag;em.opt.Vfloate_AV1{sigma} error on phiVmagstat.errorfloatphiVPhase in V band for this frequency (1)radtime.phasefloate_phiV1{sigma} error on phiVradstat.errorfloatAIcAmplitude in Ic band for this frequencymagsrc.var.amplitudefloate_AIc1{sigma} error on AIcmagstat.errorfloatphiIcPhase in Ic band for this frequency (1)radtime.phasefloate_phiIc1{sigma} error on phiIcradstat.errorfloatJ/MNRAS/427/1517/table6Light-curve solution of UZ Vir in B, V and Ic bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFrequency identification (G1)meta.id;em.freqcharFreqFrequency valued**-1em.freqdoubleABAmplitude in B band for this frequencymagphot.mag;em.opt.Bfloate_AB1{sigma} error on phiBmagstat.errorfloatphiBPhase in B band for this frequency (1)radtime.phasefloate_phiB1{sigma} error on phiBradstat.errorfloatAVAmplitude in V band for this frequencymagphot.mag;em.opt.Vfloate_AV1{sigma} error on phiVmagstat.errorfloatphiVPhase in V band for this frequency (1)radtime.phasefloate_phiV1{sigma} error on phiVradstat.errorfloatAIcAmplitude in Ic band for this frequencymagsrc.var.amplitudefloate_AIc1{sigma} error on AIcmagstat.errorfloatphiIcPhase in Ic band for this frequency (1)radtime.phasefloate_phiIc1{sigma} error on phiIcradstat.errorfloatJ/MNRAS/427/1517/tablea1*CCD {Delta}V observations and derived colour indices of XY AndrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoubleDVmagDifferential V magnitudemagphot.mag;em.opt.V;arith.difffloatDV-Ic? Differential V-Ic colour indexmagphot.color;arith.difffloatnullableJ/MNRAS/427/1517/tablea2*CCD {Delta}Ic observations of XY AndrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoubleDIcmagDifferential Ic magnitudemagphot.mag;em.opt.I;arith.difffloatJ/MNRAS/427/1517/tablea3*CCD {Delta}V observations and derived colour indices of UZ VirrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoubleDVmagDifferential V magnitudemagphot.mag;em.opt.V;arith.difffloatDB-V? Differential B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableDV-Ic? Differential V-Ic colour indexmagphot.color;arith.difffloatnullableJ/MNRAS/427/1517/tablea4*CCD {Delta}B observations of UZ VirrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoubleDBmagDifferential B magnitudemagphot.mag;em.opt.B;arith.difffloatJ/MNRAS/427/1517/tablea5*CCD {Delta}Ic observations of UZ VirrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoubleDIcmagDifferential Ic magnitudemagphot.mag;em.opt.I;arith.difffloat