J/A+A/689/A224ivo://CDS.VizieR/J/A+A/689/A224doi:10.26093/cds/vizier.36890224CDSHocde V.Moskalik P.Gorynya N.A.Smolec R.Singh Rathour R.,Ziolkowska O.2024-11-29T20:05:44Z2024-09-13T12:32:08ZCDS support team

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

cds-question@unistra.frvariable-starsradial-velocityvisible-astronomyRadial velocity (RV) curves of Classical Cepheids allow precise determination of the resonant periods, which in turn help to constrain fundamental parameters of these stars. The primary goal of this paper is to derive precise Fourier parameters of the radial velocity (RV) curves for fundamental and first-overtone Galactic Cepheids. The secondary objectives are then to analyze progression of the Fourier parameters up to the 7th harmonic as well as to propose identification of the pulsation modes of the stars. For each star, we carefully selected RV measurements available in the literature which yield the highest precision of Fourier parameters according to the procedure that follows. We performed a Fourier decomposition of the RV curves using unweighted least-square method. We corrected for zero-point differences between data sets. We subtracted RV modulations caused by binary motion and have removed other residual trends. Uncertainty of Fourier parameters are derived using the covariance matrix. Finally, we have displayed and analyzed qualitatively the progressions found for low- and for high-order Fourier parameters. We applied a standard identification of their pulsation mode based on their Fourier phase difference {phi}21. We more than doubled the number of Cepheids with published Fourier parameters of their RV curves, determined together with their uncertainties. Our sample includes 178 fundamental-mode and 33 first overtone pulsators, as well as 7 additional Cepheids whose pulsation mode is uncertain or undetermined according to our criteria. For the fundamental-mode Cepheids, the precision of the obtained low-order Fourier phases is about 7 times better and of the low-order Fourier amplitude ratios about 25% better as compared to precision achieved in previously published Fourier parameter surveys. The precision of the first-overtone Fourier parameters is improved by about 50%.With highly accurate RV Fourier phases {phi}21, we are able to firmly identify V495 Cyg as a new first-overtone Cepheid. We confirm first-overtone nature of several other stars, tentatively identified as such with the shape of their lightcurves. We also show that {alpha} UMi should be definitely classified as a first-overtone pulsator. In 3 objects (VY Per, AQ Pup and QZ Nor) we found significant {gamma}-velocity variations that we attribute to spectroscopic binarity after careful analysis RV measurements of these stars. Finally, the analysis of the fundamental mode Fourier parameters up to 7th order reveals very tight progression of Fourier phases for all pulsation periods. They are also tightly correlated with each other. For P<10-day we find a very well defined upper limit for the Fourier amplitude A1. We have provided new precise Fourier parameters of Cepheid velocity curves, determined from RV measurements available in the literature together with unpublished data. The pulsation period coverage and the precision obtained, in particular for Fourier phase {phi}21, will be useful for studying the dynamics of Cepheid pulsations with the help of hydrodynamical models. Further radial velocity measurements from modern high-resolution spectroscopic instruments will be important to improve these results.2024A&A...689A.224Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/689/A224CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/689/A224https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/689/A224http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/689/A224https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/689/A224https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/689/A224http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/689/A224GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/689/A224/tableb1 (RV data sources used for Fourier decomposition)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A224/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A224/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A224/tableb1?GETtext/xml+votable180.050000true298.11820391.00565890.005555555555555556Cone search capability for table J/A+A/689/A224/tabled1 (Fourier parameters of fundamental-mode Cepheids (Quality 1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A224/tabled1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A224/tabled1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A224/tabled1?GETtext/xml+votable180.050000true280.9312967-7.73109920.005555555555555556Cone search capability for table J/A+A/689/A224/tabled2 (Fourier parameters of fundamental-mode Cepheids (Quality 1a))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A224/tabled2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A224/tabled2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A224/tabled2?GETtext/xml+votable180.050000true86.263168113.57636220.005555555555555556Cone search capability for table J/A+A/689/A224/tabled3 (Fourier parameters of fundamental-mode Cepheids (Quality 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A224/tabled3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A224/tabled3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A224/tabled3?GETtext/xml+votable180.050000true100.02325927.60582940.005555555555555556Cone search capability for table J/A+A/689/A224/tabled4 (Fourier parameters of first-overtone Cepheids)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A224/tabled4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A224/tabled4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A224/tabled4?GETtext/xml+votable180.050000true42.994796768.88850190.005555555555555556Cone search capability for table J/A+A/689/A224/tabled5 (Fourier parameters of Cepheids with uncertain or unknown pulsation mode)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A224/tabled5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A224/tabled5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A224/tabled5?GETtext/xml+votable180.050000true76.631847255.35352810.0055555555555555566/1239 1340 1426 1431-1432 1445 1836 1858 1920 1985 3000 3005 3033 3045 3047 3052 3239 3255 3261 3263 3342 3361 3600 3616 3632 3641 3714 3849 4095 12846 12934 12968 12971 13166 13201 13288 13309-13310 13931 13933 13961 13990 14009 14047 14205 14212 14238-14239 14260 14262 14265 14271 14283 14295 14303 14323-14324 14404 14409 14424 14436 14533 14601 14607 14609 14625 14637 14653 14709 14718 14770 15360 15388 15396 15424-15425 15429 15618 15633 15660 21648 21683 21686 22068 22115 22122 22169 22207 22214 22219 22221 22267 22438 23619 23622 23660 23778 23846 23852 23922 23936 24002 24146 24226 24372 24411 28717 28779 28808 28819 28831 28893 28916 28991 29032 29081 29095 29104 29110 29126 29166 29216 29468 29533 29665 29772 29875 29897 30128 30211 30222-30223 30245 30258 30311 30313 30321-30322 30333 30504 30580 30609 30641 30646 32012 32074 33804 37203 37223 37235 37303 37332 37336 37340 37674 37721 37757 37829 37867 37903 37923 37926 37929-37931 37934 37939 38022 38026 38049 39125 39217 39244 39348 39410 39766 39771 39790 39796 39886 39908 39920 39933 40580 41375 41383 41385 41461 41556 41599 41605 41608 41667 41722 41737 41761 41810 41813 41842 41862 42153 42185 42297 42352 42820 43022 43047 43056 43060https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/689/A224?format=asciiOpticaldefaultJ/A+A/689/A224/tableb1RV data sources used for Fourier decompositionSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVindicates RV data in table C6meta.ref.urlcharNameCepheid namemeta.id;meta.maincharprimaryPerPulsation period (1)dtime.perioddoubler_PerSources of data, in refs.dat filemeta.ref;pos.framechar_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.mainJ/A+A/689/A224/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharJ/A+A/689/A224/tabled1Fourier parameters of fundamental-mode Cepheids (Quality 1)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPerPulsation perioddtime.periodfloatNdatNumber of data pointsmeta.numberintsigmaDispersion of the fitkm/sphys.veloc.dispersionfloatA1Fourier amplitude of the first harmonickm/ssrc.var.amplitudefloate_A1Error of A1km/sstat.errorfloatphi21Fourier phase phi21=phi2-2.phi1stat.fit.paramfloate_phi21Error of phi21stat.errorfloatR21Fourier amplitude ratio R21=A2/A1src.var.amplitudefloate_R21Error of R21stat.errorfloatphi31? Fourier phase phi31=phi3-3.phi1stat.fit.paramfloatnullablee_phi31? Error of phi31stat.errorfloatnullableR31? Fourier amplitude ratio R31=A3/A1src.var.amplitudefloatnullablee_R31? Error of R31stat.errorfloatnullablephi41? Fourier phase phi41=phi4-4.phi1stat.fit.paramfloatnullablee_phi41? Error of phi41stat.errorfloatnullableR41? Fourier amplitude ratio R41=A4/A1src.var.amplitudefloatnullablee_R41? Error of R41stat.errorfloatnullablephi51? Fourier phase phi51=phi5-5.phi1stat.fit.paramfloatnullablee_phi51? Error of phi51stat.errorfloatnullableR51? Fourier amplitude ratio R51=A5/A1src.var.amplitudefloatnullablee_R51? Error of R51stat.errorfloatnullablephi61? Fourier phase phi61=phi6-6.phi1stat.fit.paramfloatnullablee_phi61? Error of phi61stat.errorfloatnullableR61? Fourier amplitude ratio R61=A6/A1src.var.amplitudefloatnullablee_R61? Error of R61stat.errorfloatnullablephi71? Fourier phase phi71=phi7-7.phi1stat.fit.paramfloatnullablee_phi71? Error of phi71stat.errorfloatnullableR71? Fourier amplitude ratio R71=A7/A1src.var.amplitudefloatnullablee_R71? Error of R71stat.errorfloatnullablephi81? Fourier phase phi81=phi8-8.phi1stat.fit.paramfloatnullablee_phi81? Error of phi81stat.errorfloatnullableR81? Fourier amplitude ratio R81=A8/A1src.var.amplitudefloatnullablee_R81? Error of R81stat.errorfloatnullablephi91? Fourier phase phi91=phi9-9.phi1stat.fit.paramfloatnullablee_phi91? Error of phi91stat.errorfloatnullableR91? Fourier amplitude ratio R91=A9/A1src.var.amplitudefloatnullablee_R91? Error of R91stat.errorfloatnullablephi101? Fourier phase phi101=phi10-10.phi1stat.fit.paramfloatnullablee_phi101? Error of phi101stat.errorfloatnullableR101? Fourier amplitude ratio R101=A10/A1src.var.amplitudefloatnullablee_R101? Error of R101stat.errorfloatnullablephi111? Fourier phase phi111=phi11-11.phi1stat.fit.paramfloatnullablee_phi111? Error of phi111stat.errorfloatnullableR111? Fourier amplitude ratio R111=A11/A1src.var.amplitudefloatnullablee_R111? Error of R111stat.errorfloatnullablephi121? Fourier phase phi121=phi12-12.phi1stat.fit.paramfloatnullablee_phi121? Error of phi121stat.errorfloatnullableR121? Fourier amplitude ratio R121=A12/A1src.var.amplitudefloatnullablee_R121? Error of R121stat.errorfloatnullablephi131? Fourier phase phi131=phi13-13.phi1stat.fit.paramfloatnullablee_phi131? Error of phi131stat.errorfloatnullableR131? Fourier amplitude ratio R131=A13/A1src.var.amplitudefloatnullablee_R131? Error of R131stat.errorfloatnullablephi141? Fourier phase phi141=phi14-14.phi1stat.fit.paramfloatnullablee_phi141? Error of phi141stat.errorfloatnullableR141? Fourier amplitude ratio R141=A14/A1src.var.amplitudefloatnullablee_R141? Error of R141stat.errorfloatnullablephi151? Fourier phase phi151=phi15-15.phi1stat.fit.paramfloatnullablee_phi151? Error of phi151stat.errorfloatnullableR151? Fourier amplitude ratio R151=A15/A1src.var.amplitudefloatnullablee_R151? Error of R151stat.errorfloatnullablephi161? Fourier phase phi161=phi16-16.phi1stat.fit.paramfloatnullablee_phi161? Error of phi161stat.errorfloatnullableR161? Fourier amplitude ratio R161=A16/A1src.var.amplitudefloatnullablee_R161? Error of R161stat.errorfloatnullable_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.mainNameCepheid namemeta.id;meta.maincharNOrder of the Fourier fit (1)stat.fit.param;meta.modelledcharJ/A+A/689/A224/tabled2Fourier parameters of fundamental-mode Cepheids (Quality 1a)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.maincharPerPulsation perioddtime.periodfloatNdatNumber of data pointsmeta.numberintsigmaDispersion of the fitkm/sphys.veloc.dispersionfloatA1Fourier amplitude of the first harmonickm/ssrc.var.amplitudefloate_A1Error of A1km/sstat.errorfloatphi21Fourier phase phi21=phi2-2.phi1stat.fit.paramfloate_phi21Error of phi21stat.errorfloatR21Fourier amplitude ratio R21=A2/A1src.var.amplitudefloate_R21Error of R21stat.errorfloatphi31? Fourier phase phi31=phi3-3.phi1stat.fit.paramfloatnullablee_phi31? Error of phi31stat.errorfloatnullableR31? Fourier amplitude ratio R31=A3/A1src.var.amplitudefloatnullablee_R31? Error of R31stat.errorfloatnullablephi41? Fourier phase phi41=phi4-4.phi1stat.fit.paramfloatnullablee_phi41? Error of phi41stat.errorfloatnullableR41? Fourier amplitude ratio R41=A4/A1src.var.amplitudefloatnullablee_R41? Error of R41stat.errorfloatnullablephi51? Fourier phase phi51=phi5-5.phi1stat.fit.paramfloatnullablee_phi51? Error of phi51stat.errorfloatnullableR51? Fourier amplitude ratio R51=A5/A1src.var.amplitudefloatnullablee_R51? Error of R51stat.errorfloatnullablephi61? Fourier phase phi61=phi6-6.phi1stat.fit.paramfloatnullablee_phi61? Error of phi61stat.errorfloatnullableR61? Fourier amplitude ratio R61=A6/A1src.var.amplitudefloatnullablee_R61? Error of R61stat.errorfloatnullablephi71? Fourier phase phi71=phi7-7.phi1stat.fit.paramfloatnullablee_phi71? Error of phi71stat.errorfloatnullableR71? Fourier amplitude ratio R71=A7/A1src.var.amplitudefloatnullablee_R71? Error of R71stat.errorfloatnullablephi81? Fourier phase phi81=phi8-8.phi1stat.fit.paramfloatnullablee_phi81? Error of phi81stat.errorfloatnullableR81? Fourier amplitude ratio R81=A8/A1src.var.amplitudefloatnullablee_R81? Error of R81stat.errorfloatnullablephi91? Fourier phase phi91=phi9-9.phi1stat.fit.paramfloatnullablee_phi91? Error of phi91stat.errorfloatnullableR91? Fourier amplitude ratio R91=A9/A1src.var.amplitudefloatnullablee_R91? Error of R91stat.errorfloatnullablephi101? Fourier phase phi101=phi10-10.phi1stat.fit.paramfloatnullablee_phi101? Error of phi101stat.errorfloatnullableR101? Fourier amplitude ratio R101=A10/A1src.var.amplitudefloatnullablee_R101? Error of R101stat.errorfloatnullablephi111? Fourier phase phi111=phi11-11.phi1stat.fit.paramfloatnullablee_phi111? Error of phi111stat.errorfloatnullableR111? Fourier amplitude ratio R111=A11/A1src.var.amplitudefloatnullablee_R111? Error of R111stat.errorfloatnullablephi121? Fourier phase phi121=phi12-12.phi1stat.fit.paramfloatnullablee_phi121? Error of phi121stat.errorfloatnullableR121? Fourier amplitude ratio R121=A12/A1src.var.amplitudefloatnullablee_R121? Error of R121stat.errorfloatnullablephi131? Fourier phase phi131=phi13-13.phi1stat.fit.paramfloatnullablee_phi131? Error of phi131stat.errorfloatnullableR131? Fourier amplitude ratio R131=A13/A1src.var.amplitudefloatnullablee_R131? Error of R131stat.errorfloatnullablephi141? Fourier phase phi141=phi14-14.phi1stat.fit.paramfloatnullablee_phi141? Error of phi141stat.errorfloatnullableR141? Fourier amplitude ratio R141=A14/A1src.var.amplitudefloatnullablee_R141? Error of R141stat.errorfloatnullablephi151? Fourier phase phi151=phi15-15.phi1stat.fit.paramfloatnullablee_phi151? Error of phi151stat.errorfloatnullableR151? Fourier amplitude ratio R151=A15/A1src.var.amplitudefloatnullablee_R151? Error of R151stat.errorfloatnullablephi161? Fourier phase phi161=phi16-16.phi1stat.fit.paramfloatnullablee_phi161? Error of phi161stat.errorfloatnullableR161? Fourier amplitude ratio R161=A16/A1src.var.amplitudefloatnullablee_R161? Error of R161stat.errorfloatnullable_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.mainNOrder of the Fourier fit (1)stat.fit.param;meta.modelledcharJ/A+A/689/A224/tabled3Fourier parameters of fundamental-mode Cepheids (Quality 2)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.maincharPerPulsation perioddtime.periodfloatNdatNumber of data pointsmeta.numberintsigmaDispersion of the fitkm/sphys.veloc.dispersionfloatA1Fourier amplitude of the first harmonickm/ssrc.var.amplitudefloate_A1Error of A1km/sstat.errorfloatphi21? Fourier phase phi21=phi2-2.phi1stat.fit.paramfloatnullablee_phi21? Error of phi21stat.errorfloatnullableR21? Fourier amplitude ratio R21=A2/A1src.var.amplitudefloatnullablee_R21? Error of R21stat.errorfloatnullablephi31? Fourier phase phi31=phi3-3.phi1stat.fit.paramfloatnullablee_phi31? Error of phi31stat.errorfloatnullableR31? Fourier amplitude ratio R31=A3/A1src.var.amplitudefloatnullablee_R31? Error of R31stat.errorfloatnullablephi41? Fourier phase phi41=phi4-4.phi1stat.fit.paramfloatnullablee_phi41? Error of phi41stat.errorfloatnullableR41? Fourier amplitude ratio R41=A4/A1src.var.amplitudefloatnullablee_R41? Error of R41stat.errorfloatnullablephi51? Fourier phase phi51=phi5-5.phi1stat.fit.paramfloatnullablee_phi51? Error of phi51stat.errorfloatnullableR51? Fourier amplitude ratio R51=A5/A1src.var.amplitudefloatnullablee_R51? Error of R51stat.errorfloatnullablephi61? Fourier phase phi61=phi6-6.phi1stat.fit.paramfloatnullablee_phi61? Error of phi61stat.errorfloatnullableR61? Fourier amplitude ratio R61=A6/A1src.var.amplitudefloatnullablee_R61? Error of R61stat.errorfloatnullablephi71? Fourier phase phi71=phi7-7.phi1stat.fit.paramfloatnullablee_phi71? Error of phi71stat.errorfloatnullableR71? Fourier amplitude ratio R71=A7/A1src.var.amplitudefloatnullablee_R71? Error of R71stat.errorfloatnullablephi81? Fourier phase phi81=phi8-8.phi1stat.fit.paramfloatnullablee_phi81? Error of phi81stat.errorfloatnullableR81? Fourier amplitude ratio R81=A8/A1src.var.amplitudefloatnullablee_R81? Error of R81stat.errorfloatnullablephi91? Fourier phase phi91=phi9-9.phi1stat.fit.paramfloatnullablee_phi91? Error of phi91stat.errorfloatnullableR91? Fourier amplitude ratio R91=A9/A1src.var.amplitudefloatnullablee_R91? Error of R91stat.errorfloatnullablephi101? Fourier phase phi101=phi10-10.phi1stat.fit.paramfloatnullablee_phi101? Error of phi101stat.errorfloatnullableR101? Fourier amplitude ratio R101=A10/A1src.var.amplitudefloatnullablee_R101? Error of R101stat.errorfloatnullablephi111? Fourier phase phi111=phi11-11.phi1stat.fit.paramfloatnullablee_phi111? Error of phi111stat.errorfloatnullableR111? Fourier amplitude ratio R111=A11/A1src.var.amplitudefloatnullablee_R111? Error of R111stat.errorfloatnullableFlag[2bcde] Quality of the fit (2)meta.code.qualchar_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.mainNOrder of the Fourier fit (1)stat.fit.param;meta.modelledcharJ/A+A/689/A224/tabled4Fourier parameters of first-overtone CepheidsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPerPulsation perioddtime.periodfloatNdatNumber of data pointsmeta.numberintsigmaDispersion of the fitkm/sphys.veloc.dispersionfloatA1Fourier amplitude of first harmonickm/ssrc.var.amplitudefloate_A1Error of A1km/sstat.errorfloatphi21Fourier phase phi21=phi2-2.phi1stat.fit.paramfloate_phi21Error of phi21stat.errorfloatR21Fourier amplitude ratio R21=A2/A1src.var.amplitudefloate_R21Error of R21stat.errorfloatphi31? Fourier phase phi31=phi3-3.phi1stat.fit.paramfloatnullablee_phi31? Error of phi31stat.errorfloatnullableR31? Fourier amplitude ratio R31=A3/A1src.var.amplitudefloatnullablee_R31? Error of R31stat.errorfloatnullablephi41? Fourier phase phi41=phi4-4.phi1stat.fit.paramfloatnullablee_phi41? Error of phi41stat.errorfloatnullableR41? Fourier amplitude ratio R41=A4/A1src.var.amplitudefloatnullablee_R41? Error of R41stat.errorfloatnullableFlagQuality of the fit (2)meta.code.qualchar_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.mainNameCepheid namemeta.id;meta.maincharNOrder of the Fourier fit (1)stat.fit.param;meta.modelledcharJ/A+A/689/A224/tabled5Fourier parameters of Cepheids with uncertain or unknown pulsation modesigmaDispersion of the fitkm/sphys.veloc.dispersionfloatA1Fourier amplitude of the first harmonickm/ssrc.var.amplitudefloate_A1Error of A1km/sstat.errorfloatphi21? Fourier phase phi21=phi2-2.phi1stat.fit.paramfloatnullablee_phi21? Error of phi21stat.errorfloatnullableR21? Fourier amplitude ratio R21=A2/A1src.var.amplitudefloatnullablee_R21? Error of R21stat.errorfloatnullablephi31? Fourier phase phi31=phi3-3.phi1stat.fit.paramfloatnullablee_phi31? Error of phi31stat.errorfloatnullableR31? Fourier amplitude ratio R31=A3/A1src.var.amplitudefloatnullablee_R31? Error of R31stat.errorfloatnullableFlagQuality of the fit (2)meta.code.qualcharModePulsation mode (3)meta.code;src.varchar_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.mainSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.maincharPerPulsation perioddtime.periodfloatNdatNumber of data pointsmeta.numberintNOrder of the Fourier fit (1)stat.fit.param;meta.modelledcharJ/A+A/689/A224/tabled6Private communication of RV measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid namemeta.id;meta.maincharDateObservations date (JD-2400000)dtime.epoch;obsdoubleRVObserved radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV? Radial velocity uncertaintykm/sstat.errorfloatnullableInstInstrument (1)meta.id;instrcharObserverObserver namemeta.id;obs.observerchar