J/ApJ/747/108ivo://CDS.VizieR/J/ApJ/747/108doi:10.26093/cds/vizier.17470108CDSMoravveji E.Guinan E.F.Shultz M.Williamson M.H.Moya A.2017-05-30T07:01:37Z2013-10-28T08:22:29ZCDS support team

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

cds-question@unistra.frphotometryradial-velocitygiant-starsRigel ({beta} Ori, B8 Ia) is a nearby blue supergiant displaying {alpha} Cyg type variability, and is one of the nearest Type II supernova progenitors. As such it is an excellent test bed to study the internal structure of pre-core-collapse stars. In this study, for the first time, we present 28 days of high-precision MOST photometry and over six years of spectroscopic monitoring. We report 19 significant pulsation modes of signal-to-noise ratio, S/N >~ 4.6 from radial velocities, with variability timescales ranging from 1.21 to 74.7 days, which are associated with high-order low-degree gravity modes. While the radial velocity variations show a degree of correlation with the flux changes, there is no clear interplay between the equivalent widths of different metallic and H{alpha} lines.2012ApJ...747..108Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/747/108CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/190/203 : 3.6 years of DIRBE NIR stellar light curves (Price+, 2010)J/ApJ/535/325 : Spectra of normal stars in the J-band (Wallace+ 2000)J/ApJS/111/445 : Spectra of normal stars in the K band (Wallace+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/747/108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/747/108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/747/108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/747/108https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/747/108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/747/108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/747/108/data1MOST (Microvariability and Oscillations of Stars) space photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2450000)dtime.epochdoubleDmagRelative MOST observed magnitudemagphot.mag;arith.diffdoubleJ/ApJ/747/108/data2Full AST radial velocity data set (Automatic Spectroscopic Telescope at Fairborn Observatory)HJDHeliocentric Julian Datedtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVelRadial velocity (1)km/sphys.veloc;pos.heliocentricfloate_RVelError in RVelkm/sstat.error;spect.dopplerVelocfloat