J/A+A/442/211ivo://CDS.VizieR/J/A+A/442/211doi:10.26093/cds/vizier.34420211CDSScholz R.-D.Meusinger H.Jahreiss H.2017-09-29T10:34:10Z2005-11-19T20:09:25ZCDS support team

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

cds-question@unistra.frsurveyspre-main-sequence-starsmorgan-keenan-classificationstellar-distanceDistance estimates based on low-resolution spectroscopy and Two Micron All Sky Survey (2MASS, Cat. <II/246>) J magnitudes are presented for 322 nearby candidates from Luyten's NLTT catalogue (<I/98>). Mainly relatively bright (typically 7<Ks<11) and red high proper motion stars have been selected according to their 2MASS magnitudes and optical-to-infrared colours (+1<R-Ks<+7). Some LHS stars previously lacking spectroscopy have also been included. We have classified the majority of the objects as early-M dwarfs (M2-M5). More than 70% of our targets turned out to lie within the 25pc horizon of the catalogue of nearby stars, with 50 objects placed within 15pc and 8 objects being closer than 10pc. Three objects in the 10pc sample have no previously published spectral type: LP 876-10 (M4), LP 870-65 (M4.5), and LP 869-26 (M5). A large fraction of the objects in our sample (57%) ave independent distance estimates, mainly by the recent efforts of Reid and collaborators. Our distance determinations are generally in good agreement with theirs. 11 rather distant (d>100pc) objects have also been identified, including a probable halo, but relatively hot (Teff=13000K) white dwarf (LHS 1200) and 10 red dwarfs with extremely large tangential velocities (250<v_t_<1150km/s). Altogether, there are 11 red dwarfs (including one within 70pc) with tangential velocities larger than about 250km/s. All these objects are suspected to be in fact subdwarfs, if so, their distances would be only about half of our original estimates. The three most extreme objects in that respect are the K and early M dwarfs LP 323-168, LHS 5343 and LP 552-21 with corrected distances between 180pc and 400pc and resulting tangential velocities still larger than about 400km/s.2005A&A...442..211Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/442/211CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/98 : NLTT Catalogue (Luyten, 1979)J/ApJ/582/1011 : Revised NLTT Catalog (Salim+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/442/211https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/442/211http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/442/211https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/442/211https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/442/211http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/442/211GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/442/211/table1 (Data of the 322 stars of the sample.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/442/211/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/442/211/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/442/211/table1?GETtext/xml+votable180.050000true0.3575417-16.94838890.0055555555555555566/399 428 574 608 636 796 823 890 964 966 989 1020 1109 1159 1703 1827 1872 2458 2604 2701 2796 3517 3529 3579 3863 3908 4299 4311 4468 4520 4590 4690 4693 4725 4739 4768 4801 4809 4867 4995 5109 5160 5264 5267 5428 5435 5439 5652 5758 5830 5935 6126 6170 6453 6480 6750 6868 6880 6943 7080 7446 7956 7964 8088 8492 8593 8657 8723 8765 9117 9119 9311 9416 9428-9429 9433 9435 9807 9867 9929 9948 9951 10035 10062 10110 10198 10214 10344 10351 10356 10408 10433 10500 10521 10544 10644 10676 10722 10731 10783 10790 10847 10873 11110 11144 11157 11387 11499 11527 11632 11639 11779 11921 11926 11960 11967 12044 12076 12356 12544 12705 12731 13421 14452 14553 14615 14760 14931 14981 15066 16296 16809 16955 17006 17019 17097 17155 17158 17202 17222 17235 17242 17264 17294 17309 17328 17372 17412 17431 17493 17509 17542 17590 17607 17748 17948 17953 17978 17985 18004 18059 18069 18506 18595 18609 18671 18700 18713 18722 18749 18973 18999 19044 19048 19776 19830 20035 20184 20399 20795 20803 21180 21420 21496 21762 21971 22202 22307 22535 22581 22604 22610 22615 22687 22738 23796 23858 23964 24011 24167 24223 24323 24330 24375 24413 24450 24792 24863 24886 24938 24977 25084 25192 25285 25374 25443 25456 25535 25619 25638 25669 25733 25828 26137 26181 26188 26214 26240 26244 26584 26634 26706 26731 26742 26768 26795 26844 26891 26907 26910 27084 27145 27447 27514 27915 28195 28204 28242 28329-28330 28360 28387 28395 28530 28978 29189 29348 30009 30056 30132 30453 30745 30880 31991 32596 32749 32757 35892 36045 36047 36060 36068 36113 36268 36307 36382 36460 36492 36541 36574 36596 36828 36842 36862 39778 40254 40402 40411 40435 40463 40629 40772 40801 40858 40876 40938 42912 43889 43941 43962 44025 44124 44214 44254 44500 44597 44662 44752 44782 46962 47050 47061 48093 48265 48684 48800 48856 490291.1166583743361574e-19 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/442/211?format=asciiOpticaldefaultJ/A+A/442/211/table1Data of the 322 stars of the sample.SimbadNameSimbad column added by the CDSmeta.idcharNameNLTT, LHS, Giclas or Durchmusterung namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Name[*] * indicates a note in notes.datmeta.notecharRAJ2000Right Ascension J2000 (2MASS)pos.eq.ra;meta.mainDEJ2000Declination J2000 (2MASS)pos.eq.dec;meta.mainEpochEpoch of position (2MASS)yrtime.epochdoubleJmag? J magnitude from 2MASSmagphot.mag;em.IR.JfloatnullableHmag? H magnitude from 2MASSmagphot.mag;em.IR.HfloatnullableKsmag? K_s magnitude from 2MASSmagphot.mag;em.IR.KfloatnullablepSpPrevious spectral type, G, K, Msrc.spTypecharpSpC? Previous spectral sub-class (0.0-9.5)src.spTypefloatnullabler_pSpC? Reference for pSp and pSpCmeta.ref;pos.frameintnullablepDist? Previous distance estimatepcpos.distance;pos.heliocentricfloatnullabler_pDist? Reference for previous distance estimatemeta.ref;pos.frameintnullableSpTNew spectral type, M, K,WD ,CWDsrc.spTypecharSpC? New spectral sub-class (0.0-9.5)src.spTypefloatnullableDistNew distance estimate, accurate to ~20%pcpos.distance;pos.heliocentricfloatVtTangential velocitykm/sphys.veloc.transverseint2MASSShow the data from 2MASS Catalog (II/246)meta.ref.urlcharJ/A+A/442/211/notesIndividual notesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharNoteText of the notemeta.notecharJ/A+A/442/211/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar