J/AJ/147/66ivo://CDS.VizieR/J/AJ/147/66doi:10.26093/cds/vizier.51470066CDSZhang L.-Y.Yang Y.-G.Pi Q.-F.Zhu Z.2026-03-18T11:44:35Z2014-09-09T14:27:24ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryccd-photometryWe present new CCD light curves of the short-period Algol-type eclipsing binary V404 And obtained in 2009-2011. The time-resolving multiple BVRI color light curves of the year 2011 with full phase coverage were analyzed simultaneously using the latest Wilson-Devinney program. We concluded that the configuration of two starspots on the primary is the most reliable explanation for the light curve distortions observed in 2011. Based on the new photometric solution, we further applied the spot model to explain the other light curves, including the previously published R-band light curves. We revealed that the starspots changed on a long timescale in terms of the spot parameters and the differences between Max.I and Max.II. Moreover, the O-C diagram spanning about 15yr shows an upward parabola, which indicates a secular increase in the orbital period of V404 And. The orbital period increases at a rate of dP/dt=5.3(0.3)x10^-7^days/yr, which might be interpreted by the angular momentum exchange via magnetic activity.2014AJ....147...66Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/66CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2013)J/AJ/144/136 : BV light curves of V1241 Tauri (Yang+, 2012)J/AJ/144/50 : Light curves of AV Hya and DZ Cas (Yang+, 2012)J/AJ/143/13 : Light curves of AL Gem and BM Mon (Yang+, 2012)J/AJ/139/2669 : CL Aur BVRI light curves (Lee+, 2010)J/AJ/139/1360 : AO Ser VR light curves (Yang+, 2010)J/AJ/137/226 : Differential light curves of TV Tri (Yang+, 2009)J/MNRAS/373/435 : Algol binaries angular momentum evolution (Ibanoglu+, 2006)J/AJ/131/621 : Catalog of 1022 bright contact binary stars (Gettel+, 2006)J/A+A/417/263 : Catalogue of Algol type binary stars (Budding+, 2004)http://var2.astro.cz/EN/ : Eclipsing Binaries Minima Databasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/66https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/66http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/66https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/66https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/66http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/66GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/147/66/table2The new BVRI photometric data of V404 and in 2009-2011recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-B? Heliocentric Julian Date of B band observationdtime.epochdoublenullableDBmag? Differential Johnson B band magnitudemagphot.mag;arith.difffloatnullableHJD-V? Heliocentric Julian Date of V band observationdtime.epochdoublenullableDVmag? Differential Johnson V band magnitudemagphot.mag;arith.difffloatnullableHJD-R? Heliocentric Julian Date of R band observationdtime.epochdoublenullableDRmag? Differential Cousins R band magnitudemagphot.mag;arith.difffloatnullableHJD-I? Heliocentric Julian Date of I band observationdtime.epochdoublenullableDImag? Differential Cousins I band magnitudemagphot.mag;arith.difffloatnullableTelTelescope (1m telescope or 85cm telescope) (1)meta.id;instr.telcharJ/AJ/147/66/table4The minimum times of V404 AndrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_HJD[b] Minimum time whose O-C value is higher than 0.01 and was omittedmeta.codecharHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoublee_HJDError in HJDdstat.error;time.epochfloatA[a] assigned error (1)meta.codecharCycle[0.5/8091] Cycle numbermeta.id;meta.mainfloatO-C1The (O-C)_1_ residualstat.fit.residualfloatO-C2The (O-C)_2_ residualstat.fit.residualfloatRefReference; in refs.dat filemeta.ref;pos.frameintJ/AJ/147/66/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference identifierpos.frame;meta.mainintprimaryBibCodeBibliographic codemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharCatVizieR catalogmeta.id;meta.tablechar