J/AJ/139/2639ivo://CDS.VizieR/J/AJ/139/2639doi:10.26093/cds/vizier.51392639CDSLi L.-J.Qian S.-B.2012-07-20T19:49:49Z2012-07-01T14:20:25ZCDS support team

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

cds-question@unistra.frvariable-starsWe measure two new times of light maximum of the SX Phoenicis star DY Pegasi in 2008 December and collect 410 pe/CCD times of light maximum that had been published. These data could be modeled with a nonlinear fit including a continuously decreasing period change (dP/dt=-9.04x10^-12^days/day) and a periodic change with a period of 42.2 yr. If this periodic change is caused by the light traveling time effect of an orbital motion of DY Pegasi in a binary system, the deduced mass of the companion could be 0.028M_{sun}_ and it is probably a brown dwarf.2010AJ....139.2639Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/139/2639CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/139/2639https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/139/2639http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/139/2639https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/139/2639https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/139/2639http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/139/2639GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/139/2639/table1The 412 available pe/CCD times of light maximum of DY Pegasi(O-C)Residualstat.fit.residualfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublef_HJD[*] not used in the analysismeta.codecharDetDetector (CCD or pe=photoelectric)meta.id;meta.maincharEpEpoch (cycle) number (2)meta.number;time.periodintRefReference, in refs.dat filemeta.ref;pos.frame;meta.fileintJ/AJ/139/2639/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar