J/A+A/567/A57ivo://CDS.VizieR/J/A+A/567/A57doi:10.26093/cds/vizier.35670057CDSKoubsky P.Kotkova L.Kraus M.Yang S.Slechta M.Harmanec P.Wolf M.,Voruba V.Kubat J.Kubatova B.Niemczura E.Skoda P.2015-02-17T15:06:44Z2014-07-10T11:15:11ZCDS support team

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

cds-question@unistra.frbe-starsspectroscopic-binary-starsradial-velocityspectroscopyThe spectrum of the Be star HD 161306 is shown to vary periodically with a period of ~100-days. The radial velocity of the HeI 6678{AA} emission peak varying in antiphase to the radial velocity of the H{alpha} emission wings component suggests that the star is a binary similar to {phi} Per, 59 Cyg, or FY CMa, i.e. a radiatively interacting Be binary - a rare case among Be stars. This type of object is also called a {phi} Per-type binary or Be + sdO binaries. The range of radial-velocity variations of the strong emission peak in the helium line observed in HD 161306 is about 180km/s, similar to what is observed for these systems. We therefore conclude that HD 161306 may represent another case of a Be star with a hot subdwarf companion.2014A&A...567A..57Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/567/A57CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/567/A57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/567/A57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/567/A57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/567/A57https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/567/A57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/567/A57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/567/A57/listRadial velocity measurements and list of FITS spectraPhasePhasetime.phasefloatfitsDetails of the FITS filesmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateHeliocentric Julian date (HJD-2400000)dtime.epoch;pos.heliocentricdoubleV(Ha)H{alpha} radial velocitykm/sspect.dopplerVelocfloate_V(Ha)rms uncertainty on V(Ha)km/sstat.errorfloatV(HeI)? HeI radial velocity (1)km/sspect.dopplerVelocfloatnullablee_V(HeI)? rms uncertainty on V(HeI)km/sstat.errorfloatnullableSrcOrigin of spectra (2)meta.refcharspHaShow the H{alpha} spectrummeta.ref.urlcharspHeShow the HeI spectrummeta.ref.urlcharRes(Ha)[0.23/0.26]? H{alpha} wavelength resolution0.1nmspect.resolutionfloatnullableN(Ha)[59/118]? Number of pixels for H{alpha} linemeta.numberintnullableS(Ha)[11/14]? Size of FITS H{alpha} spectrumKibytephys.size;meta.fitsintnullableSpHaName of H{alpha} (6548-6575{AA}) spectrum file in subdirectory spmeta.id;meta.maincharRes(He)? HeI wavelength resolution0.1nmspect.resolutionfloatnullableN(He)[59/118]? Number of pixels for HeI linemeta.numberintnullableS(He)[11/14]? Size of FITS HeI spectrumKibytephys.size;meta.fitsintnullableSpHeName of HeI (6670-6685{AA}) spectrum file in subdirectory spmeta.id;meta.filechar