J/MNRAS/494/1237ivo://CDS.VizieR/J/MNRAS/494/1237doi:10.26093/cds/vizier.74941237CDSSkarka M.Prudil Z.Jurcsik J.2024-09-02T20:15:51Z2023-07-28T13:30:55ZCDS support team

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

cds-question@unistra.frvariable-starsmilky-way-galaxyphotometryvisible-astronomyThe number of stars observed by the Optical Gravitational Lensing Experiment (OGLE) project in the Galactic bulge offers an invaluable chance to study RR Lyrae stars in a statistical manner. We used data of 3141 fundamental-mode RR Lyrae stars showing the Blazhko effect observed in OGLE-IV to investigate a possible connection between modulation amplitudes and periods, light curve, and pulsation characteristics. We found that there is no simple monotonic correlation between any combination of two parameters concerning the Blazhko and pulsation amplitudes, periods, and the shape of the light curves. There are only systematic limits. There is a bottom limit of the modulation period with respect to the pulsation period. We also found that the possible range of modulation amplitudes decreases with increasing pulsation period, which could point towards that the Blazhko effect is suppressed in cooler, larger, more luminous, and less metal abundant bulge RR Lyrae stars. Our investigation revealed that the distribution of the modulation periods can be described with two populations of stars with the mean modulation periods of 48 and 186d. There is a certain region with a low density of the modulated stars, which we call the Blazhko valley, in the pulsation period-modulation period plane. Based on the similarity of the modulation envelopes, basically every star can be assigned to one of six morphological classes. The double modulation was found in 25 per cent of the studied stars. Only 6.3 per cent of modulated stars belong to the Oosterhoff group II.2020MNRAS.494.1237Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/494/1237CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AcA/64/177 : VI light curves of Galactic Bulge RR LyraeJ/MNRAS/466/2602 : Blazhko effect in Galactic RR Lyrae (Prudil+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/494/1237https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/494/1237http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/494/1237https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/494/1237https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/494/1237http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/494/1237GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/494/1237/table1 (All the important pulsation, modulation, frequency spectra, and light-curve parameters of 3141 RR Lyrae)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/494/1237/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/494/1237/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/494/1237/table1?GETtext/xml+votable180.050000true258.2237522-29.47808390.0055555555555555564/1795 5/7178-7179 7194-7195 7205 7216-7217 7220 7313 6/28687 28707 28709-28711 28768 28770-28772 28774-28775 28792 28794-28795 28800-28801 28804 28816-28817 28819 28828-28829 28842-28843 28851 28854 28856-28857 28859-28860 28872-28873 28876 28884 28888-28889 28906-28907 28911 29184-29185 29248-29249 29251 29264 42495 42837https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/494/1237?format=asciiOpticaldefaultJ/MNRAS/494/1237/table1All the important pulsation, modulation, frequency spectra, and light-curve parameters of 3141 RR LyraeSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (OGLE-BLG-RRLYR-NNNNN)meta.id;meta.maincharf0Pulsation frequencyd**-1em.freq;src.vardoublee_f0Error on f0d**-1stat.errordoubleAresAmplitude of the residuals around the +/-0.3c/d vicinity of f_0_ after removing 10 pulsation componentsmagsrc.var.amplitudedoublePBLModulation periodtime.periodfloate_PBLError on PBLstat.errorfloatf-Frequency of the left-hand-side peakd**-1em.freq;src.vardoublee_f-Error on f-d**-1stat.errordoubleA-Amplitude of the left side peak in the frequency spectrummagsrc.var.amplitudedoublef+Frequency of the right-hand-side peakd**-1em.freq;src.vardoublee_f+Error on f+d**-1stat.errordoubleA+Amplitude of the right-hand-side peakmagsrc.var.amplitudedoubleImeanMean brightness of the starmagphot.mag;em.opt.IfloatImeanMAXMean brightness during the Blazhko maximum amplitudemagphot.mag;em.opt.IfloatImeanMINMean brightness during the Blazhko minimum amplitudemagphot.mag;em.opt.IfloatAmeanMean amplitude of the light curvemagsrc.var.amplitudefloatAmeanMINAmplitude of the light curve during the minimal-amplitudemagsrc.var.amplitudefloatAmeanMAXAmplitude of the light curve during the maximal-amplitudemagsrc.var.amplitudefloatAenvTOP? Amplitude of the top envelopemagsrc.var.amplitudefloatnullableAenvBOT? Amplitude of the bottom envelopemagsrc.var.amplitudefloatnullableRTenvTOPRise time of the top envelopetime.intervalfloatRTenvBOTRise time of the bottom envelopetime.intervalfloatR21Fourier amplitude coefficient R_21_phot.mag;arith.ratiofloatPhi21Fourier phase coefficient {Phi}_21_radstat.fit.paramfloatR31Fourier amplitude coefficient R_31_phot.mag;arith.ratiofloatPhi31Fourier phase coefficient {Phi}_31_radstat.fit.paramfloatRTLCRise time of the mean light curvetime.intervalfloatOGroup[1/2] Oosterhoff group (1)src.classintMorphTypeMorphological type (2)meta.codecharCommentsComments (3)meta.codechar_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