J/A+A/401/959ivo://CDS.VizieR/J/A+A/401/959doi:10.26093/cds/vizier.34010959CDSPhan-Bao N.Crifo F.Delfosse X.Forveille T.Guibert J.,Borsenberger J.Epchtein N.Fouque P.Simon G.Vetois J.2005-03-23T14:47:59Z2005-03-23T15:47:47ZCDS support team

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

cds-question@unistra.frm-starsinfrared-photometryproper-motionsThis paper reports updated results on our systematic mining of the DENIS database (<B/denis>) for nearby very cool M-dwarfs (M6V-M8V, 2.0=<I-J=<3.0, photometric distance within 30pc), initiated by Phan-Bao et al. (2001, Cat. <J/A+A/380/590>, hereafter Paper I). We use M dwarfs with well measured parallaxes (HIP, GCTP,...) to calibrate the DENIS (M_I_, I-J) colour-luminosity relationship. The resulting distance error for single dwarfs is about 25%. Proper motions, as well as B and R magnitudes, were measured on archive Schmidt plates for those stars in the DENIS database that meet the photometric selection criteria. We then eliminate the giants by a Reduced Proper Motion cutoff, which is significantly more selective than a simple proper motion cutoff. It greatly reduces the selection bias against low tangential velocity stars, and results in a nearly complete sample. Here we present new data for 62 red dwarf candidates selected over 5700 square degrees in the DENIS database. 26 of those originate in the 2100 square degrees analysed in Paper I, with improved parameters here, and 36 were found in 3600 additional square degrees. 25 of those are new nearby dwarfs. In addition we cross-identified the NLTT and DENIS catalogues to find 15 similar stars, in parts of the sky not yet covered by the colour-selected search. We present distance and luminosity estimates for these 15 stars, 10 of which are newly recognized nearby dwarfs. A similar search in Paper I produced 4 red dwarf candidates, and we have thus up to now identified a total of 35 new nearby late-M dwarfs.2003A&A...401..959Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/401/959CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/denis : The DENIS database (Epchtein+, 1999)I/87 : LHS Catalogue, 2nd Edition (Luyten 1979)I/98 : NLTT Catalogue (Luyten, 1979)J/A+A/380/590 : 30 DENIS late-M dwarfs between 15 and 30pc (Phan-Bao+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/401/959https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/401/959http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/401/959https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/401/959https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/401/959http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/401/959GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/401/959/table3 (Observational data of the late-M dwarfs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/401/959/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/401/959/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/401/959/table3?GETtext/xml+votable180.050000true5.0965417-23.768250.0055555555555555566/16770 17283 17567 17677 18083 18574 18979 18999 19457 21041 22657 22739 23144 24774 24824 24887 25034 25156 25170 25325 26699 26861 26972 30903 31137 31262 31284 33470 33636 34219 34289 34301 35008 35203 35864 36793 40313 40373 42972 42983 43851 44251 44303 44306 44318 44881 45175 45963 48025 48462https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/401/959?format=asciiInfrareddefaultJ/A+A/401/959/table2Proper motions of the late-M dwarfsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intType[abc] Type of star (G1)charDENISDENIS name (based on J2000 position)charNew[*] *: Not previously known as a high proper motion starcharpmRAProper motion in right ascensionmas/yrintpmDEProper motion in declinationmas/yrinte_pmRA? pmRA error (table2c.dat only)mas/yrintnullablee_pmDE? pmDE error (table2c.dat only)mas/yrintnullablepmTotal proper motionmas/yrintpmL? Total proper motion (1)mas/yrintnullableJ/A+A/401/959/table3Observational data of the late-M dwarfsONameOther name (2)charrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intType[abc] Type of star (G1)charDENISDENIS name (based on J2000 position)charprimaryn_DENISNote (1)charRAJ2000Right ascension (J2000) at Epochpos.eq.ra;meta.mainDEJ2000Declination (J2000) at Epochpos.eq.dec;meta.mainEpochDENIS epoch of observationyrdoubleBmag? B magnitude from the SRC-J platemagfloatnullableRmag? R magnitude from the plates POSS I, SRC-R and ESO-RmagfloatnullableImagDENIS I magnitudemagfloatI-JDENIS I-J colour indexmagfloatJ-KDENIS J-K colour indexmagfloatH(I)I band reduced proper motion (3)magfloate_H(I)? H(I) error (only in table3c.dat)magfloatnullableH(I)maxMaximum I band reduced proper motion (4)magfloatRef[a] Reference for proper motion a: our measurementcharJ/A+A/401/959/table5Estimated distances and effective temperatures of the late-M dwarfsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intType[abc] Type of star (G1)charDENISDENIS namecharn_DENIS[*] *: low proper motion red dwarf candidatescharIMAGAbsolute I band magnitude (1)magfloatDistIEstimated distance from IMAGpcfloatVtTangential velocity (computed from D and proper motion)km/sfloatTeffEffective temperature (2)KintRefReference for previously known distances (3)char