J/A+A/613/A70ivo://CDS.VizieR/J/A+A/613/A70doi:10.26093/cds/vizier.36130070CDSSemaan T.Hubert A.M.Zorec J.Gutierrez-Soto J.Fremat Y.,Martayan C.Fabregat J.Eggenberger P.2022-05-10T16:35:26Z2018-06-01T09:17:00ZCDS support team

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

cds-question@unistra.frearly-type-starsbe-starsThe class of Be stars are the epitome of rapid rotators in the main sequence. These stars are privileged candidates for studying the incidence of rotation on the stellar internal structure and on non-radial pulsations. Pulsations are considered possible mechanisms to trigger mass-ejection phenomena required to build up the circumstellar disks of Be stars. Time series analyses of the light curves of 15 faint Be stars observed with the CoRoT satellite were performed to obtain the distribution of non-radial pulsation (NRP) frequencies in their power spectra at epochs with and without light outbursts and to discriminate pulsations from rotation-related photometric variations. Standard Fourier techniques were employed to analyze the CoRoT light curves. Fundamental parameters corrected for rapid-rotation effects were used to study the power spectrum as a function of the stellar location in the instability domains of the Hertzsprung-Russell (H-R) diagram. Frequencies are concentrated in separate groups as predicted for g-modes in rapid B-type rotators, except for the two stars that are outside the H-R instability domain. In five objects the variations in the power spectrum are correlated with the time-dependent outbursts characteristics. Time-frequency analysis showed that during the outbursts the amplitudes of stable main frequencies within 0.03d-1 intervals strongly change, while transients and/or frequencies of low amplitude appear separated or not separated from the stellar frequencies. The frequency patterns and activities depend on evolution phases: i) the average separations between groups of frequencies are larger in the zero-age main sequence (ZAMS) than in the terminal age main sequence (TAMS) and are the largest in the middle of the MS phase; ii) a poor frequency spectrum with f<1d-1 of low amplitude characterizes the stars beyond the TAMS; and iii) outbursts are seen in stars hotter than B4 spectral type and in the second half of the MS. The two main frequency groups are separated by {delta}f=(1.24+/-0.28).f_{rot}_ in agreement with models of prograde sectoral g-modes (m=-1,-2) of intermediate-mass rapid rotators. The changes of amplitudes of individual frequencies and the presence of transients correlated with the outburst events deserve further studies of physical conditions in the subatmospheric layers to establish the relationship between pulsations and sporadic mass-ejection events.2018A&A...613A..70Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/613/A70CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/corot : CoRoT observation log (N2-4.4) (CoRoT 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/613/A70https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/613/A70http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/613/A70https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/613/A70https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/613/A70http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/613/A70GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.322582951404819e-19 3.852589004194616e-19defaultJ/A+A/613/A70/table21CoRoT 102847615 data from IR1 run light curvePhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintJ/A+A/613/A70/table19CoRoT 102825808 data from IR1 run light curveComCombinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharJ/A+A/613/A70/table1Some basic characteristics of the CoRoT datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCoRoTCoRoT numbermeta.id;meta.mainlongSeq[1/22] Sequential number, as in Paper I (Semaan et al., 2013A&A...551A.130S)meta.recordintVmagV magnitudemagphot.mag;em.opt.VfloatRunRunmeta.notechart0CoRoT time of phase 0 (HJD with origin on 01/01/2000 at 12h00 UT)dtime.epochdoublePtsNumber of data pointsmeta.numberintSampleSampling: S1=512s, S2=32smeta.idcharDTTotal duration of CoRoT observationsdtime.duration;obsfloatDfFrequency accuracyd**-1stat.errorfloatNfnumber of identified frequenciesmeta.numberintAminlower amplitude detected(10-6)src.var.amplitudeintFileNameName of the table with frequencies, amplitudes and phasesmeta.id;meta.tablecharplotShow the frequency/amplitude plotmeta.ref.urlcharJ/A+A/613/A70/table7CoRoT 101486436 data from LRC1 run light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table8CoRoT 102595654 data from LRA1 run light curveAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleJ/A+A/613/A70/table9CoRoT 102656190 data from LRA1 run light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table10CoRoT 102672979 data from LRA1 run light curveComCombinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharJ/A+A/613/A70/table11CoRoT 102686433 data from LRA1 run light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table12CoRoT 102719279 data from LRA1 run (64 frequencies) and IR1 (24 frequencies) run light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnr1Identification frequenciesmeta.id;spect.linecharn_nr1[f ab] p or f for frequencies with uniform period separationmeta.notecharFreq1? Frequency in cycle/dayd**-1em.freqdoublenullableFreqHz1? Frequency in micron-HertzuHzem.freqdoublenullableAmm1? Amplitude of frequency in ppm(10-6)src.var.amplitudeintnullablePhase1? Phase from 0 to 2piradtime.phasefloatnullableS/N1? Signal to noise ratiostat.snrfloatnullableNfreqfind1? Frequency order of determination with the FREQFIND codeinstr.orderintnullablePower1[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharCom1Combinations and harmonicsmeta.notecharnr2Identification frequenciesmeta.id;spect.linecharFreq2? Frequency in cycle/dayd**-1em.freqdoublenullableFreqHz2? Frequency in micron-HertzuHzem.freqdoublenullableAmm2? Amplitude of frequency in ppm(10-6)src.var.amplitudeintnullablePhase2? Phase from 0 to 2piradtime.phasefloatnullableS/N2? Signal to noise ratiostat.snrfloatnullableNfreqfind2? Frequency order of determination with the FREQFIND codeinstr.orderintnullablePower2[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharCom2Combinations and harmonicsmeta.notecharJ/A+A/613/A70/table13CoRoT 102719279 data from LRA1 run (64 frequencies), LRA6 run (42 frequencies) and IR1 run (24 frequencies) light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnr1Identification frequenciesmeta.id;spect.linecharFreq1? Frequency in cycle/dayd**-1em.freqdoublenullablenr2Identification frequenciesmeta.id;spect.linecharFreq2? Frequency in cycle/dayd**-1em.freqdoublenullableFreqHz2? Frequency in micron-HertzuHzem.freqdoublenullableAmm2? Amplitude of frequency in ppm(10-6)src.var.amplitudeintnullablePhase2? Phase from 0 to 2piradtime.phasefloatnullableS/N2? Signal to noise ratiostat.snrfloatnullableNfreqfind2? Frequency order of determinationinstr.orderintnullablenr3Identification frequenciesmeta.id;spect.linecharFreq3? Frequency in cycle/dayd**-1em.freqdoublenullableComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table14CoRoT 102725623 data from LRA1 run (8 frequencies) and IR1 run (2 frequencies) light curvesPhase2? Phase from 0 to 2piradtime.phasefloatnullableS/N2? Signal to noise ratiostat.snrfloatnullableNfreqfind2? Frequency order of determination with the FREQFIND codeinstr.orderintnullablePower2[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharCom2Combinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnr1Identification frequenciesmeta.id;spect.linecharFreq1Frequency in cycle/dayd**-1em.freqdoubleFreqHz1Frequency in micron-HertzuHzem.freqdoubleAmm1Amplitude of frequency in ppm(10-6)src.var.amplitudeintPhase1Phase from 0 to 2piradtime.phasefloatS/N1Signal to noise ratiostat.snrfloatNfreqfind1Frequency order of determination with the FREQFIND codeinstr.orderintPower1[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharCom1Combinations and harmonicsmeta.notecharnr2Identification frequenciesmeta.id;spect.linecharFreq2? Frequency in cycle/dayd**-1em.freqdoublenullableFreqHz2? Frequency in micron-HertzuHzem.freqdoublenullableAmm2? Amplitude of frequency in ppm(10-6)src.var.amplitudeintnullableJ/A+A/613/A70/table15CoRoT 102728404 data from LRA1 run light curvenrIdentification frequenciesmeta.id;spect.linecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table16CoRoT 102766835 data from LRA1 run (69 frequencies) and IR1 run (23 frequencies) light curvesnr2Identification frequenciesmeta.id;spect.linecharCom1Combinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnr1Identification frequenciesmeta.id;spect.linecharn_nr1[f ab] p or f for frequencies with uniform period separationmeta.notecharFreq1? Frequency in cycle/dayd**-1em.freqdoublenullableFreqHz1? Frequency in micron-HertzuHzem.freqdoublenullableAmm1? Amplitude of frequency in ppm(10-6)src.var.amplitudeintnullablePhase1? Phase from 0 to 2piradtime.phasefloatnullableS/N1? Signal to noise ratiostat.snrfloatnullableNfreqfind1? Frequency order of determination with the FREQFIND codeinstr.orderintnullablePower1[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharFreq2? Frequency in cycle/dayd**-1em.freqdoublenullableFreqHz2? Frequency in micron-HertzuHzem.freqdoublenullableAmm2? Amplitude of frequency in ppm(10-6)src.var.amplitudeintnullablePhase2? Phase from 0 to 2piradtime.phasefloatnullableS/N2? Signal to noise ratiostat.snrfloatnullableNfreqfind2? Frequency order of determination with the FREQFIND codeinstr.orderintnullablePower2[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharCom2Combinations and harmonicsmeta.notecharJ/A+A/613/A70/table17CoRoT 102785204 data from LRA1 run light curveNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatJ/A+A/613/A70/table18CoRoT 102785480 data from IR1 run light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table20CoRoT 102829773 data from IR1 run light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notecharJ/A+A/613/A70/table22CoRoT 102904910 data from IR1 run light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnrIdentification frequenciesmeta.id;spect.linecharn_nr[p fab] p or f for frequencies with uniform period separationmeta.notecharFreqFrequency in cycle/dayd**-1em.freqdoubleFreqHzFrequency in micron-HertzuHzem.freqdoubleAmmAmplitude of frequency in ppm(10-6)src.var.amplitudeintPhasePhase from 0 to 2piradtime.phasefloatS/NSignal to noise ratiostat.snrfloatNfreqfindFrequency order of determination with the FREQFIND codeinstr.orderintPower[S] Indication that the frequency is among the 20th with higher amplitudemeta.codecharComCombinations and harmonicsmeta.notechar