J/A+A/448/697ivo://CDS.VizieR/J/A+A/448/697doi:10.26093/cds/vizier.34480697CDSChapellier E.Le Contel D.Le Contel J.-M.Mathias P.Valtier J.-C.2017-06-26T11:48:53Z2006-04-05T12:54:06ZCDS support team

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

cds-question@unistra.frvariable-starsradial-velocityHigh resolution and high signal to noise ratio spectroscopic observations of the classical {beta} Cephei star {gamma} Peg were obtained between 1991 and 2005. The analysis of these data combined with previously published results shows that {gamma} Peg is a spectroscopic binary with an orbital period of 370.5d. We discovered three new frequencies in addition to the well-known 6.5897d^-1^ (0.15175d) one. That at 6.01d^-1^ is a typical Cephei frequency. The two others at 0.68 and 0.87d^-1^ are similar to the high degree g-mode frequencies found in SPB stars. Thus, {gamma} Peg is a hybrid {beta} Cephei-SPB star. Its position in the HR diagram is compatible with such a status. In addition, a small increase of the main period has been detected between the 1995 and 2005 observations.2006A&A...448..697Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/448/697CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/158/193 : Catalog of Galactic {beta} Cephei stars (Stankov+, 2005)J/A+A/304/406 : Photometry and radial velocities of 16 Lac (Chapellier+, 1995)J/A+A/286/136 : Radial velocities of four beta Cep variables (Aerts+ 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/448/697https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/448/697http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/448/697https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/448/697https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/448/697http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/448/697GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/448/697/obsgpegRadial velocities of gamma PegrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloat