J/AJ/160/32ivo://CDS.VizieR/J/AJ/160/32doi:10.26093/cds/vizier.51600032CDSLabadie-Bartz J.Handler G.Pepper J.Balona L.De Cat P.Stevens D.J.,Lund M.B.Stassun K.G.Rodriguez J.E.Siverd R.J.James D.J.Kuhn R.B.2021-07-05T06:50:45Z2020-11-03T09:51:45ZCDS support team

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

cds-question@unistra.frsurveysvariable-starsinfrared-photometryvisible-astronomyphotometrystellar-spectral-typesasteroseismologyWe present the results of a search for Galactic {beta} Cephei stars, which are massive pulsating stars with both pressure modes and mixed modes. Thus, these stars can serve as benchmarks for seismological studies of the interiors of massive stars. We conducted the search by performing a frequency analysis on the optical light curves of known O- and B-type stars with data from the Kilodegree Extremely Little Telescope exoplanet survey. We identify 113 {beta} Cephei stars, of which 86 are new discoveries, which altogether represent a 70% increase in the number currently known. An additional 97 candidates are identified. Among our targets, we find five new eclipsing binaries and 22 stars with equal frequency spacings suggestive of rotational splitting of nonradial pulsation modes. Candidates for runaway stars among our targets and a number of interesting individual objects are discussed. Most of the known and newly discovered {beta} Cephei stars will be observed by the Transiting Exoplanet Survey Satellite mission, providing by far the most comprehensive observational data set of massive main-sequence pulsating stars of sufficient quality for detailed asteroseismic studies. Future analysis of these light curves has the potential to dramatically increase our understanding of the structure of stellar interiors and the physical processes taking place therein.2020AJ....160...32Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/32CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/mk : Catalogue of Stellar Spectral Classifications (Skiff,2009- )III/67 : Catalogue of Be stars (Jaschek+, 1982)III/135 : Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989)III/190 : WEB Catalog of Radial Velocities (Duflot+ 1995)III/182 : HDE Charts: positions, proper motions (Nesterov+ 1995)III/231 : The Tycho-2 Spectral Type Catalog (Wright+, 2003)III/254 : 2nd Cat. of RVs with Astrometric Data (Kharchenko+, 2007)III/260 : General Catalogue of Ap and Am stars (Renson+ 2009)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/AN/283/109 : Star positions in the region of alpha Per (Heckmann+, 1956)J/A+A/286/136 : Radial velocities of four beta Cep variables (Aerts+, 1994)J/A+AS/122/51 : B to G stars calibration in Geneva photometry (Kunzli+,1997)J/A+A/368/912 : Polarization & rotational velocities Be stars (Yudin, 2001)J/ApJ/573/359 : Rotational velocities of B stars from BSC (Abt+, 2002)J/A+A/393/965 : Intrinsic frequencies of pulsating B stars (de Cat+, 2002)J/MNRAS/331/45 : New periodic variables (Koen+, 2002)J/A+A/415/241 : Geneva photometry of HD 129929 (Aerts+, 2004)J/ApJS/158/193 : Catalog of Galactic {beta} Cephei stars (Stankov+, 2005)J/BaltA/14/1 : Vilnius photometry in a Cam area (Zdanavicius+, 2005)J/ApJ/648/580 : Rotational velocities in 19 open clusters (Huang+, 2006)J/AJ/134/1570 : Rotational velocities of OB stars (Daflon+, 2007)J/A+A/463/243 : Variations of O-B stars in Mercator obs. (De Cat+, 2007)J/AN/328/889 : Mean Radial Velocities of open clusters (Kharchenko+, 2007)J/A+A/477/917 : Beta Cephei stars in the ASAS-3 data. II. (Pigulski+, 2008)J/A+A/506/111 : Frequency analysis of HD 180642 (V1449 Aql) (Degroote+,2009)J/AJ/138/813 : Speckle interferometer at Mount Wilson Obs. (Hartkopf+,2009)J/A+A/506/95 : Fourier analysis of HD 49330 CoRoT light curve (Huat+, 2009)J/ApJS/186/191 : VI photometry and spectroscopy in h+{chi} Per (Currie+,2010)J/ApJ/722/605 : A stellar rotation census of B stars (Huang+, 2010)J/A+A/533/A70 : New {beta} Cep stars in NGC 637 (Handler+, 2011)J/MNRAS/410/190 : Young runaway stars within 3kpc (Tetzlaff+, 2011)J/AJ/144/130 : Rotational velocities of nearby HIP B stars (Braganca+,2012)J/MNRAS/424/1925 : Spectrocopic Binarity of O and B type stars (Chini+, 2012)J/AJ/144/158 : Prop. of B and Be stars in h and {chi} Persei (Marsh+, 2012)J/A+A/560/A16 : Comparison of evolutionary tracks (Martins+, 2013)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/AJ/146/102 : Multi-freq. fit of periodic B stars NGC884 (Saesen+, 2013)J/A+A/580/A23 : Stroemgren-Crawford uvby{beta} photometry (Paunzen, 2015)J/MNRAS/465/2432 : MiMeS magnetic analysis of O-type stars (Grunhut+, 2017)J/AJ/153/252 : Photo. variability of BeSS-KELT stars (Labadie-Bartz+, 2017)J/A+A/597/A22 : Massive O- and B-type stars velocities (Simon-Diaz+, 2017)J/other/AstBu/73.178 : Magnetic fields of CP stars (2011) (Romanyuk+, 2018)J/AJ/156/102 : The TESS Input Catalog Candidate Target (Stassun+, 2018)J/ApJS/241/32 : OB stars from the LAMOST DR5 spectra (Liu+, 2019)http://redcliffcottage.co.za/tess/ : TESS catalog of starshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/32https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/160/32/stars ({beta} Cephei stars (Table 1) and candidates (Table 2) identified in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/160/32/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/160/32/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/160/32/stars?GETtext/xml+votable180.050000true278.9734583-7.16488890.005555555555555556Cone search capability for table J/AJ/160/32/table3 (Candidate {beta} Cephei rejected in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/160/32/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/160/32/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/160/32/table3?GETtext/xml+votable180.050000true33.869208360.16238890.0055555555555555566/1040 1126 1330 1334 1341 1447 1449 1616 1717 1962 2886 2929 2942 3036 3059 3092 3139 3244 3245 3247 3254 3256 3257 3258 3260 3275 3278 3296 3307 3317 3329 3337 3367 3384 3588 3600 3604 3608 3612 3617 3618 3625 3626 3628 3632 3638 3643 3652 3658 3712 3713 3722 3723 3725 12914 12955 12967 12972 12975 12980 12981 13000 13039 13115 13289 13722 13729 14162 14191 14273 14300 14302 14309 14353 14356 14357 14402 14407 14411 14435 14440 14449 14576 14624 14630 14635 14640 14642 14643 14645 14646 14647 14648 14649 14650 14655 14679 14685 14700 14722 14725 15641 15673 15677 15688 15703 15737 21439 22071 22209 22217 22247 22264 22268 22270 22887 22892 23638 23641 23772 23808 23819 23981 23983 23995 24330 24373 24382 29529 30088 30188 30217 30218 30222 30223 30234 30238 30246 30262 30288 30302 30326 30470 30691 31103 31106 31614 31854 32123 32216 36043 37356 37357 37645 37681 37686 37721 37729 37741 37746 37747 37755 37783 37790 37848 37853 37854 37858 37860 37861 37863 37865 37867 37869 37870 37873 37877 37880 37882 37886 38817 39034 39131 39133 39164 39189 39193 39238 39241 39244 39251 39255 39276 39296 39316 39332 39337 40090 42934 44066 44268 44348 47335https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/160/32?format=asciiOpticalInfrareddefaultJ/AJ/160/32/stars{beta} Cephei stars (Table 1) and candidates (Table 2) identified in this workTICTIC Identifiermeta.idlongprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassObject class: beta-Cephei (113 occurrences) or candidates (97 occurrences)meta.codecharNameStar identifiermeta.id;meta.maincharNobsNumber of observations for this star (link to Tables B1+B2)meta.numberintnullableFreq[2.9/22.2] Primary frequencyd**-1em.freqfloatAmp[0.6/44.6] Amplitudemmagphot.magfloatf_Amp[d] d=Amplitudes may be largely suppressedmeta.codecharNm[0/12] Number of modesmeta.numberintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[3.6/12.4] V band magnitudemagphot.mag;em.opt.VfloatSpTSpectral Typesrc.spTypecharr_SpT[a-j] Reference flag on SpT; if non indicated, SpT are from B. Skiff (B/mk) (1)meta.ref;pos.framecharKnownKnown to be a {beta} Cephei star? (2)meta.codecharClusterMember of known clustermeta.id.parentcharf_NameFlag on Star (3)meta.codechartfaInteractive LC plotmeta.ref.urlcharrawInteractive LC plotmeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharJ/AJ/160/32/table3Candidate {beta} Cephei rejected in this workSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar identifiermeta.id;meta.maincharTICTIC Identifiermeta.idlongNobsNumber of observations for this star (link to Table B3)meta.numberintnullableFreq[2.9/22.2] Primary frequencyd**-1em.freqfloatAmp[0.6/44.6] Amplitudemmagphot.magfloatf_Amp[d] d=Amplitudes may be largely suppressedmeta.codecharNm[0/12] Number of modesmeta.numberintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[3.6/12.4] V band magnitudemagphot.mag;em.opt.VfloatSpTSpectral Typesrc.spTypecharr_SpT[a-j] Reference flag on SpT; if non indicated, SpT are from B. Skiff (B/mk) (1)meta.ref;pos.framecharKnownKnown to be a {beta} Cephei star? (2)meta.codecharClusterMember of known clustermeta.id.parentcharf_NameFlag on Star (3)meta.codecharJ/AJ/160/32/freqFrequencies and amplitudes determined for the {beta} Cephei stars (Table B1) and candidates (Table B2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTICTIC identifiermeta.id;meta.mainlongf_TIC[bd] d=Amplitudes may be largely suppressedmeta.codecharIDFrequency ID (or IDs)meta.idcharFreq[0.005/37.4]? Frequencyd**-1em.freqdoublenullablee_Freq[1e-06/0.0002]? Uncertainty in Freq (1)d**-1stat.errordoublenullableAmp[0.4/46]? Amplitudemmagphot.magfloatnullablee_Amp[0.06/1]? Uncertainty in Amp (1)mmagstat.errorfloatnullableClassObject class: beta-Cephei or candidatesmeta.codecharJ/AJ/160/32/tableb3Frequencies and amplitudes determined for the rejected starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTICTIC identifiermeta.id;meta.mainlongf_TIC[bd] d=Amplitudes may be largely suppressedmeta.codecharIDFrequency ID (or IDs)meta.idcharFreq[0.005/37.4]? Frequencyd**-1em.freqdoublenullablee_Freq[1e-06/0.0002]? Uncertainty in Freq (1)d**-1stat.errordoublenullableAmp[0.4/46]? Amplitudemmagphot.magfloatnullablee_Amp[0.06/1]? Uncertainty in Amp (1)mmagstat.errorfloatnullable