J/ApJ/704/975ivo://CDS.VizieR/J/ApJ/704/975doi:10.26093/cds/vizier.17040975CDSJenkins J.S.Ramsey L.W.Jones H.R.A.Pavlenko Y.Gallardo J.,Barnes J.R.Pinfield D.J.2018-01-04T08:22:18Z2011-01-11T17:34:09ZCDS support team

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

cds-question@unistra.frdwarf-starsm-starsWe present spectroscopic rotation velocities (vsini) for 56 M dwarf stars using high-resolution Hobby-Eberly Telescope High Resolution Spectrograph red spectroscopy. In addition, we have also determined photometric effective temperatures, masses, and metallicities ([Fe/H]) for some stars observed here and in the literature where we could acquire accurate parallax measurements and relevant photometry. We have increased the number of known vsini values for mid M stars by around 80% and can confirm a weakly increasing rotation velocity with decreasing effective temperature. Our sample of vsini is peak at low velocities (~3km/s). We find a change in the rotational velocity distribution between early M and late M stars, which is likely due to the changing field topology between partially and fully convective stars. There is also a possible further change in the rotational distribution toward the late M dwarfs where dust begins to play a role in the stellar atmospheres. We also link vsini to age and show how it can be used to provide mid-M star age limits. When all literature velocities for M dwarfs are added to our sample, there are 198 with vsini<=10km/s and 124 in the mid-to-late M star regime (M3.0-M9.5) where measuring precision optical radial velocities is difficult. In addition, we also search the spectra for any significant Half emission or absorption. Forty three percent were found to exhibit such emission and could represent young, active objects with high levels of radial-velocity noise. We acquired two epochs of spectra for the star GJ1253 spread by almost one month and the Half profile changed from showing no clear signs of emission, to exhibiting a clear emission peak. Four stars in our sample appear to be low-mass binaries (GJ1080, GJ3129, Gl802, and LHS3080), with both GJ3129 and Gl802 exhibiting double Half emission features. The tables presented here will aid any future M star planet search target selection to extract stars with low vsini.2009ApJ...704..975Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/704/975CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/226 : Rotational Velocities of Stars (Glebocki+ 2000)J/A+A/331/581 : Rotation and activity in field M dwarfs (Delfosse+ 1998)J/AJ/123/3356 : Palomar/MSU nearby star spec. survey. III. (Gizis+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/704/975https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/704/975http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/704/975https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/704/975https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/704/975http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/704/975GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/704/975/table1 (Spectral types, basic physical parameters, and chromospheric indices)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/704/975/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/704/975/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/704/975/table1?GETtext/xml+votable180.050000true178.241308324.47928330.005555555555555556Cone search capability for table J/ApJ/704/975/table2 (Stars beyond 40 parsecs identified by MK classification)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/704/975/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/704/975/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/704/975/table2?GETtext/xml+votable180.050000true82.06083332.97063890.005555555555555556Cone search capability for table J/ApJ/704/975/table3 (Candidate stars for terrestrial planet surveys)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/704/975/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/704/975/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/704/975/table3?GETtext/xml+votable180.050000true190.5079229.0151550.0055555555555555566/22 105 131 239 399 410 546 547 811 848 1122 1840 2089 2110 2119 2190 2330 2545 2724 2737 3345 3591 3715 3791 4444 4462 4553 4708 4808 4867 5000 5207 5264 5343 5410 5420 5534 5590 5681 6277 6384 6393 6552 6613 6672 6680 6716 6809 6894 6974 7029 7103 7181 7264 7313 7376 7395 7512 7611 7810 8023 8392 8440 8588 8699 8733 8972 9042 9083 9146 9154 9445 9585 9747 9883 10027 10149 10169 10303 10400 10464 10683 10753 10771 10850 11459 11496 11636 11919 12454 12621 12679 13308 13427 13451 13688 13695 13743 14220 14266 14484 14603 14709 14772 14993 15052 15311 15346 15516 15530 15548 15602 15960 16041 16502 16645 17348 17585 17665 17776 17863 17870 18060 18195 18201 18268 18482 18496 18511 18574 18666 18761 19306 19390 19466 19586 19777 20071 20100 20311 20345 20363 20459 20896 21475 21480 21953 22014 22148 22289 22309 22325 22336 22645 22709 22807 22904 22992 23137 23564 23719 23735 23818 23910 23997 24261 25310 25325 25363 25411 26005 26063 26279 26288 26326 26327 26538 26555 26560 26583 26699 26972 27127 27201 27242 27392 27456 27459 27462 27653 27762 27772 27912 28018 28121 28158 28343 28382 28454 28473 28494 28548 28646 29458 29684 30327 30505 30626 30771 30833 31014 31781 32115 32229 32335 32491 32500 32547 32656 32753 34535 35471 36526 36790 38322 39140 40436 40941 44226 44284 44644 44921 44937 45023 491258.650015785639275e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/704/975?format=asciiOpticaldefaultJ/ApJ/704/975/table1Spectral types, basic physical parameters, and chromospheric indicesplx? Parallaxmaspos.parallax.photfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar designationmeta.id;meta.maincharn_Star[*] Possible binary (1)meta.notecharVmag? V magnitudemagphot.mag;em.opt.VfloatnullableJmag2MASS J magnitudemagphot.mag;em.IR.JfloatHmag2MASS H magnitudemagphot.mag;em.IR.HfloatKsmag2MASS Ks magnitudemagphot.mag;em.IR.KfloatSpTM spectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectiveintu_Teff[* ] Low accuracy on Teff (2)meta.code.error;phys.temperature.effectivechare_plx? rms uncertainty on plxmasstat.error;pos.parallaxfloatnullableMass? Mass in solar massessolMassphys.massfloatnullablee_Mass? rms uncertainty on MasssolMassstat.error;phys.massfloatnullable[Fe/H]? Metallicitylog(Sun)phys.abund.Zfloatnullablel_vsini[<= ] Limit flag on vsinimeta.code.error;phys.veloc.rotatcharvsiniRotational velocitykm/sphys.veloc.rotatfloate_vsini? rms uncertainty on vsinikm/sstat.error;phys.veloc.rotatfloatnullableW(tell)Mean width (FWHM) of the telluric lineskm/sspect.line.widthfloatHaEm?[Yes/No ] Is H{alpha} emission present?meta.codecharSimbadSimbad column added by the CDSchar_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/704/975/table2Stars beyond 40 parsecs identified by MK classificationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar designationmeta.id;meta.maincharVmag? V magnitude (Hipparcos)magphot.mag;em.opt.VfloatnullableJmag2MASS J magnitudemagphot.mag;em.IR.JfloatHmag2MASS H magnitudemagphot.mag;em.IR.HfloatKsmag2MASS Ks magnitudemagphot.mag;em.IR.KfloatSpTM spectral typesrc.spTypechardVVelocity separation (1)km/sphys.veloc;arith.difffloate_dVrms uncertainty on deltaVkm/sstat.errorfloatl_vsini1[<= ] Limit flag on vsini1meta.code.errorcharvsini1Rotational velocity of primarykm/sphys.veloc.rotatfloate_vsini1? rms uncertainty on vsini1km/sstat.errorfloatnullablel_vsini2[<= ] Limit flag on vsini2meta.code.errorcharvsini2Rotational velocity of secondarykm/sphys.veloc.rotatfloate_vsini2? rms uncertainty on vsini2km/sstat.errorfloatnullableHaEm?Is H-{alpha} emission present? (2)meta.codecharSimbadSimbad column added by the CDSchar_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/704/975/table3Candidate stars for terrestrial planet surveysrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarCatalogue designationmeta.id;meta.maincharVmag? V magnitude (Hipparcos)magphot.mag;em.opt.VfloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks magnitudemagphot.mag;em.IR.KfloatnullableSpTM spectral typesrc.spTypecharTeff? Effective temperatureKphys.temperature.effectiveintnullableplx? Parallaxmaspos.parallax.photfloatnullablee_plx? rms uncertainty on plxmasstat.error;pos.parallaxfloatnullableMass? Estimated stellar masssolMassphys.massfloatnullablee_Mass? rms uncertainty on MasssolMassstat.error;phys.massfloatnullable[Fe/H]? Metallicitylog(Sun)phys.abund.Zfloatnullablel_vsini[<= ] Limit flag on vsinimeta.code.error;phys.veloc.rotatcharvsiniRotational velocitykm/sphys.veloc.rotatfloate_vsini? rms uncertainty on vsinikm/sstat.error;phys.veloc.rotatfloatnullabler_vsiniSource of rotational velocity (1)meta.refcharSimbadNameSimbad column added by the CDSmeta.idchar_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