J/AJ/154/124ivo://CDS.VizieR/J/AJ/154/124doi:10.26093/cds/vizier.51540124CDSClements T.D.Henry T.J.Hosey A.D.Jao W.-C.Silverstein M.L.,Winters J.G.Dieterich S.B.Riedel A.R.2024-10-11T20:09:45Z2018-07-09T09:28:39ZCDS support team

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

cds-question@unistra.frdwarf-starsm-starsinfrared-photometryvisible-astronomyphotometrystellar-distanceWe report findings from a long-term photometric variability study of M dwarfs carried out at the SMARTS 0.9 m telescope at the Cerro Tololo Inter-American Observatory. As part of a multi-faceted effort to investigate the range of luminosities of M dwarfs of a given color on the Hertzsprung-Russell Diagram, 76 M dwarfs have been observed for 3-17 years in the Johnson-Kron-Cousins V band. We find that stars elevated above the center of the main sequence distribution tend to have higher levels of variability, likely caused by magnetic activity, than their fainter counterparts below the center. This study provides insight into how the long-term magnetic activity of these stars may be affecting their sizes, luminosities, and thus positions on the H-R Diagram.2017AJ....154..124Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/124CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/174 : Yale Trigonometric Parallaxes Preliminary (van Altena+ 1991)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)J/AJ/129/413 : New high proper motion stars (-90<DE< -47) (Subasavage+, 2005)J/AJ/130/1658 : New high proper motion stars (-47<{delta}<00)J/AJ/132/866 : New M dwarfs in solar neighborhood (Riaz+, 2006)J/AJ/133/2898 : New proper-motion stars (-90<DE< -47) (Finch+, 2007)J/AJ/134/252 : New nearby white dwarf systems (Subasavage+, 2007)J/AJ/136/452 : Astrometric studies of GAT stars (Gatewood, 2008)J/AJ/141/21 : CCD distance estimates of SCR targets (Winters+, 2011)J/AJ/142/10 : New proper motion stars 0.40"/yr>pm>=0.18"/yr (Boyd+, 2011)J/AJ/142/92 : New proper motion stars with pm>=0.18"/yr (Boyd+, 2011)J/AJ/144/64 : Solar neighborhood. XXVIII. Substellar companionsJ/ApJ/748/93 : K-band spectra for 133 nearby M dwarfs (Rojas-Ayala+, 2012)J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)J/AJ/147/85 : Solar neighborhood. XXXIII. 45 M dwarfs (Riedel+, 2014)J/AJ/147/94 : Solar neighborhood. XXXII. L and M dwarfs (Dieterich+, 2014)J/AJ/149/5 : Solar neighborhood. XXXV. Distances to M dwarfsJ/AJ/150/6 : Solar neighborhood. XXXVI. VRI variability of M dwarfsJ/AJ/152/141 : Solar neighborhood. XXXVII. RVs for M dwarfs (Benedict+, 2016)J/AJ/153/14 : Solar neighborhood XXXVIII. Nearby M dwarf systemsJ/AJ/154/32 : Solar neighborhood. XXXIX. Nearby white dwarfshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/124https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/124http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/124https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/124https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/124http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/124GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/154/124/table1 (Properties of the Target Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/124/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/124/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/124/table1?GETtext/xml+votable180.050000true4.34583-66.753330.0055555555555555566/137 265 309 8562 13451 16435 16455 16498 16993 17943 18440 18496 18666 20507 20646 21050 21151 21180 22014 22309 22709 23047 23564 23718 23735 24763 24797 25198 25363 25954 26279 26538 27459 27762 28195 28816 28955 30771 30833 31019 33449 33582 35154 36264 36614 36971 37041 37257 37379 37442 38152 38551 39027 39242 39585 40386-40387 41042 42054 42910 43565 43580 43633 43814 44921 44970 45102 45118 46123 46718 46840 47732 47859 489062.367228618189496e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/154/124?format=asciiOpticalInfrareddefaultJ/AJ/154/124/table1Properties of the Target StarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget star namemeta.id;meta.maincharn_NameNote on Name (3)meta.notecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainVar[6.3/124.1] Magnitude of the variability (2)mmagsrc.var.amplitudefloatSimbadNameSimbad column added by the CDSmeta.idcharDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[9.85/15.22] Johnson V band magnitudemagphot.mag;em.opt.VfloatImag[7.17/11.76]? Cousins I band magnitudemagphot.mag;em.opt.IfloatnullableV-Ks[3.92/6.23] V-K_s_ color indexmagphot.color;em.opt.V;em.IR.KfloatDist[3/47.1] Distancepcpos.distance;pos.heliocentricfloatr_DistReference for Dist (1)meta.ref;pos.framecharVMag[8.87/14.73] Absolute V band magnitudemagphys.magAbs;em.opt.Vfloate_VMag[-2.94/2.22] Uncertainty in VMagmagstat.error;phot.mag;em.opt.VfloatDate1First date of observationtime.epoch;obsnullableDate2Last date of observationtime.epoch;obsnullableDur[2.26/17] Duration of observationyrtime.duration;obsfloatNfr[33/406] Number of framesmeta.numberint