J/MNRAS/487/4695ivo://CDS.VizieR/J/MNRAS/487/4695doi:10.26093/cds/vizier.74874695CDSSikora J.David-Uraz A.Chowdhury S.Bowman D.M.Wade G.A.Khalack V.,Kobzar O.Kochukhov O.Neiner C.Paunzen E.2024-08-19T20:19:09Z2023-01-23T12:31:19ZCDS support team

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

cds-question@unistra.frearly-type-starsvariable-starsvisible-astronomya-starsRecently, high-precision optical 2-min cadence light curves obtained with TESS for targets located in the mission's defined first four sectors have been released. The majority of these high-cadence and high-precision measurements currently span ~28d, thereby allowing periodic variability occurring on time-scales~<14d to potentially be detected. Magnetic chemically peculiar (mCP) A-type stars are well known to exhibit rotationally modulated photometric variability that is produced by inhomogeneous chemical abundance distributions in their atmospheres. While mCP stars typically exhibit rotation periods that are significantly longer than those of non-mCP stars, both populations exhibit typical periods ~<10d; therefore, the early TESS releases are suitable for searching for rotational modulation of the light curves of both mCP and non-mCP stars. We present the results of our search for A-type stars that exhibit variability in their TESS light curves that is consistent with rotational modulation based on the first two data releases obtained from sectors 1 to 4. Our search yielded 134 high-probability candidate rotational variables - 60 of which have not been previously reported. Approximately half of these stars are identified in the literature as Ap (mCP) stars. Comparisons between the subsample of high-probability candidate rotationally variable Ap stars and the subsample of stars that are not identified as Ap reveal that the latter subsample exhibits statistically (i) shorter rotation periods and (ii) significantly lower photometric amplitudes.2019MNRAS.487.4695Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/487/4695CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/487/4695https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/487/4695http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/487/4695https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/487/4695https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/487/4695http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/487/4695GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/487/4695/table1 (Parameters associated with the 134 identified high-probability candidate rotational variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/487/4695/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/487/4695/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/487/4695/table1?GETtext/xml+votable180.050000true64.3114233-38.84416920.0055555555555555566/52 59 16491 16577 16789 16876 16901 16982 17029 17052 17057 17471 17530 17546 17571 17870 23098 23173 32858 32885 32935 32958 32983-32984 32986 33024 33033 33089 33168 33231 33233 33269 33299 33305 33335 33360 33379 33487 33537 33542 33566 33587 33657 33680 33797 33829 33862 33890 33920 33976 33997 34037 34042 34061 34095 34188 34421 34501 34562 34792 34852 34875 34983 35049 35053 35075 35246 35327 35630 35772 36119 36473 36563 37046 37096 37100 37114 37402 37426 37438 37442-37443 37453 37464 37488 37502 37506 37566 37574 37581-37582 37592-37594 37602 37610 38913 38980 38990 39008 45268 45430 45447 45455 45470 45539 45927 46032 46091 46153 46211 46281 46290 46307 46496 46592 46726 46768 46856 46915 46921 47033 48152 48218 48320 48334 48346 48404 48424 48446https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/487/4695?format=asciiOpticaldefaultJ/MNRAS/487/4695/table1Parameters associated with the 134 identified high-probability candidate rotational variablesf_DTmaxFlag on DTmax (1)meta.codeintSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDTIC identifiermeta.idlongNameStar namemeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharVmagV-band magnitudemagphot.mag;em.opt.VfloatDTmaxMaximum photometric amplitude associated with the rotational modulation signalmmagsrc.var.amplitude;phys.mol.rotationfloate_DTmaxError on DTmaxmmagstat.errorfloatProtRotation period inferred from the TESS light curvedtime.perioddoublee_ProtError on Protdstat.errordoubleProtp1? Published rotation perioddtime.perioddoublenullablee_Protp1? Error on Protp1dstat.errordoublenullabler_Protp1Reference for Protp1 (2)meta.ref;pos.framecharProtp2? Other published rotation perioddtime.perioddoublenullablee_Protp2? Error on Protp2dstat.errordoublenullabler_Protp2Reference for Protp2 (2)meta.ref;pos.framecharTypeStar type (3)src.classcharf_Type? Flag on Type (4)meta.codeintnullabler_TypeReference for Type (2)meta.notecharMagdetConfidence with which any reported magnetic field measurements in the literature have been obtained (5)meta.code.qualcharr_MagdetReference for Magdet (2)meta.ref;pos.framechar_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.main