J/ApJ/955/123ivo://CDS.VizieR/J/ApJ/955/123doi:10.26093/cds/vizier/ba-xv-3vCDSShen D.-X.Li G.Abdusamatjan I.Fu J.-N.Zhu C.-H.Yu J.-L.,Zhang YuLu G.-L.Zhai N.-N.Liu J.-Z.2026-07-02T12:00:41Z2026-01-07T09:24:01ZCDS support team

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

cds-question@unistra.frstellar-spectral-typesearly-type-starsvariable-starsvisible-astronomymagnetic-fieldsasteroseismologyeffective-temperatureMagnetic hot stars refer to stars that have effective temperatures approximately in the range from 7000-50000K, and with large-scale globally organized magnetic fields. These magnetic fields exhibit strengths ranging from tens of Gauss to tens of kilo-Gauss. They are key in understanding the effects caused by magnetic fields in the stellar evolution. However, there are only three magnetic hot stars studied via a combination of spectropolarimetric and asteroseismic modeling. Combined with Transiting Exoplanet Survey Satellite sectors 1-56 data sets, we provided a photometric variability and stochastic low-frequency (SLF) variability study of 118 magnetic hot stars. Nine new rotating variable stars are identified. Using the Bayesian Markov Chain Monte Carlo framework, we fitted the morphologies of SLF variability for magnetic hot stars. Our analysis reveals that the magnetic hot stars in our sample have {gamma}<5.5 with the vast majority having 1<={gamma}<=3. The {nu}char is primarily in the ranges of 0day^-1^<{nu}_char_<6.3day^-1^. The amplitude of SLF variability, log {alpha}0, shows a dominant distribution ranging from 0.8-3. No significant correlations are observed between the luminosity and fitting parameters, suggesting no clear dependence of SLF variability on stellar mass for our sample of magnetic hot stars with masses between approximately 1.5M_{sun}_<M<20M_{sun}_. We found a significant negative correlation between the B_p_ and {nu}_char_. This suppression effect of magnetic fields on {nu}_char_ may be a result of their inhibition of macroturbulence.2023ApJ...955..123Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/955/123CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)IV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)J/A+AS/123/353 : Mean magnetic field modulus of Ap stars (Mathys, 1997)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)J/A+A/393/965 : Intrinsic freq. of slowly pulsating B stars (de Cat+, 2002)J/A+A/430/1143 : Stellar magnetic rotational phase curves (Bychkov+, 2005)J/ApJS/158/193 : Catalog of Galactic {beta} Cephei stars (Stankov+, 2005)J/A+A/450/763 : Evolutionary state of magnetic CP stars (Kochukhov+, 2006)J/A+A/492/277 : Analysis of Collinder 69 stars with VOSA (Bayo+, 2008)J/A+A/506/111 : Freq. analysis of HD 180642 (V1449 Aql) (Degroote+, 2009)J/A+A/533/A4 : CoRoT photometry of three O-type stars (Blomme+, 2011)J/A+A/530/A115 : Rotating massive MS stars evolutionary models (Brott+, 2011)J/A+A/537/A146 : Stellar models with rot. 0.8<M<120, Z=0.014 (Ekstrom+, 2012)J/MNRAS/426/2208 : H{alpha} variations of O9 subgiant HD57682 (Grunhut+, 2012)J/A+A/545/A119 : Stromgren v photometry of {sigma} Lup (Henrichs+, 2012)J/A+A/539/A143 : Nearby B-stars stellar param. and abundances (Nieva+, 2012)J/other/Sci/337.444 : RV curves of Galactic massive O stars (Sana+, 2012)J/A+A/537/A120 : Rotational velocities of A-type stars. IV. (Zorec+, 2012)J/A+A/567/A28 : HARPSpol magnetic massive stars (Alecian, 2014)J/ApJS/215/15 : SMaSH+: observations and companion detection (Sana+, 2014)J/A+A/583/A115 : FORS1 catalogue of stellar magnetic fields (Bagnulo+, 2015)J/A+A/580/A27 : Asteroseismology of KIC 10526294 (Moravveji+, 2015)J/PAZh/43/521 : 3D map of reddening and extinction (Gontcharov, 2017)J/MNRAS/465/2432 : MiMeS magnetic analysis of O-type stars (Grunhut+, 2017)J/A+A/601/A14 : Radial velocities of magnetic Ap stars (Mathys, 2017)J/MNRAS/468/2745 : Rotational properties of mCP stars (Netopil, 2017)J/A+A/597/A22 : Massive O- and B-type stars velocities (Simon-Diaz+, 2017)J/MNRAS/475/5144 : Magnetic early B-type stars. I. (Shultz+, 2018)J/other/NatAs/3.760 : BSGs low-frequency gravity waves (Bowman+, 2019)J/A+A/621/A115 : Vela OB2 members (Cantat-Gaudin+, 2019)J/ApJ/873/L5 : Magnetic fields of Ap/Bp stars (Chojnowski+, 2019)J/A+A/626/A121 : Buoyancy radius of {gamma} Dor stars (Ouazzani+, 2019)J/ApJ/872/L9 : TESS obs. of massive O and B stars (Pedersen+, 2019)J/MNRAS/493/5871 : TESS A and B stars and the Maia variables (Balona+, 2020)J/A+A/640/A36 : OB stars TESS phot. & high-res. spectroscopy (Bowman+, 2020)J/A+A/639/A81 : Variability of OB stars (Burssens+, 2020)J/A+A/640/A40 : 1002 mCP stars from LAMOST DR4 (Hummerich+, 2020)J/MNRAS/491/3586 : 611 {gamma} Doradus stars Kepler data (Li+, 2020)J/MNRAS/499/5379 : Longitudinal magnetic field of 6 B stars (Shultz+, 2020)J/MNRAS/513/1429 : MOBSTER. VI. Magnetospheres of hot stars (Shultz+, 2022)http://heasarc.gsfc.nasa.gov/docs/tess/ : NASA TESS Science Support Center homehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/955/123https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/955/123http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/955/123https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/955/123https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/955/123http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/955/123GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/955/123/table1 (Identification numbers, physical parameters and variability classifications of the 118 magnetic hot stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/955/123/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/955/123/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/955/123/table1?GETtext/xml+votable180.050000true161.2843133-59.76860470.0055555555555555566/1539 1848 2970 3066 12983 14443 14631 14843 14922 16131 16144 17421 17468 20782 20797 20915 21099 21439 21638 21655 21997 22056 22253 22805 22815 22854 22859 22861 22884 22893 22981 23255 23572 23637 28688 31710 32819 32983 33487 36502 37323 37333 37351 37367 37370 37592-37593 37721 37897 37901 37916 37932 38016 38078 38287 38306 38941 39020 39177 39183 39202 39205 39335 39352 39372 39716 39793 39853 39869 39877 41088 41144 41154 41168 41210 41461 41497 41524 41552 41568 41666 41916 42035 42191 42212 42227 42243 42463 42486-42487 42633 42673 42757 42948 43301 43332 43345 43416 43460 43531 43798 45097 45203 45430 45573 46118 46856 47539 47824 48146 48218https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/955/123?format=asciiOpticaldefaultJ/ApJ/955/123/table1Identification numbers, physical parameters and variability classifications of the 118 magnetic hot starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameStellar identifiermeta.id;meta.maincharprimaryTIC[4289780/2055137574] TESS Input Catalog identifiermeta.idlongSpTSpectral typesrc.spTypecharlogL[0.73/5.7]? Log luminositylog(solLum)phys.luminosityfloatnullablee_logL[0.01/0.6]? Uncertainty in logLlog(solLum)stat.error;phys.luminosityfloatnullablelogT[3.83/4.59]? Log effective temperatureKphys.temperature.effectivefloatnullablee_logT[0.0/0.08]? Uncertainty in logTKstat.error;phys.temperature.effectivefloatnullablelogg[0.0/4.75]? Log surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg[0.0/2.0]? Uncertainty in log (g)log(cm.s**-2)stat.error;phys.gravityfloatnullableRefReference for spectroscopic analyses (1)meta.refcharVarVariability (2)meta.code;src.varcharNfNumber of SLF fitting parameter measurements for this star (link to Table 2)meta.numberintnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/955/123/table2The Stochastic low-frequency (SLF) fitting parameters of the magnetic hot starsNameStellar identifiermeta.id;meta.mainchare_alpha0[0.3/384] Lower uncertainty in alpha0umagstat.error;stat.min;src.var.amplitudefloatE_alpha0[0.4/470] Upper uncertainty in alpha0umagstat.error;stat.max;src.var.amplitudefloatnuChar[0.05/8.9] Characteristic frequencyem.freq;src.varfloate_nuChar[0.01/0.9] Lower uncertainty in nuCharstat.error;stat.min;em.freqfloatE_nuChar[0.01/0.8] Upper uncertainty in nuCharstat.error;stat.max;em.freqfloatgamma[0.69/5.7] logarithmic amplitude gradientarith.grad;src.var.amplitudefloate_gamma[0.01/1.4] Lower uncertainty in gammastat.error;stat.min;arith.gradfloatE_gamma[0.01/2.3] Upper uncertainty in gammastat.error;stat.max;arith.gradfloatCw[0.8/86] White noise termumaginstr.det.noise;meta.modelledfloate_Cw[0/0.3] Lower uncertainty in Cwumagstat.error;stat.min;instr.det.noisefloatE_Cw[0/0.3] Upper uncertainty in Cwumagstat.error;stat.max;instr.det.noisefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSectorSector(s)obs.fieldcharalpha0[3.9/3554] Amplitude at zero frequencyumagsrc.var.amplitudedouble