J/AJ/128/426ivo://CDS.VizieR/J/AJ/128/426doi:10.26093/cds/vizier.51280426CDSWest A.A.Hawley S.L.Walkowicz L.M.Covey K.R.Silvestri N.M.,Raymond S.N.Harris H.C.Munn J.A.Mcgehee P.M.Ivezic Z.Brinkmann J.2006-01-01T14:44:34Z2006-01-01T15:43:59ZCDS support team

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

cds-question@unistra.frsubdwarf-starsinfrared-photometryvisible-astronomybroad-band-photometryline-intensitiesWe present a spectroscopic analysis of nearly 8000 late-type dwarfs in the Sloan Digital Sky Survey. Using the H{alpha} emission line as an activity indicator, we investigate the fraction of active stars as a function of spectral type and find a peak near type M8, confirming previous results.2004AJ....128..426Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/128/426CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.sdss.org : SDSS home pageJ/AJ/113/806 : M-Subdwarfs (Gizis 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/128/426https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/128/426http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/128/426https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/128/426https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/128/426http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/128/426GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/128/426/table2 (Subdwarf data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/128/426/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/128/426/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/128/426/table2?GETtext/xml+votable180.050000true5.6166667-9.24577780.0055555555555555566/5815 5818 5860 6122 6595 6611 6613 7183 7222 7225 7246 7282 7291 7308 7509 7569 8194 9941 10201 10223 11493 11505 17264 17406 17755 17771 17774 17812 17831 18032 18068 18076 18176 18533 18542 18774 18791 18829 18834 18839 19027 19038 19053 19412 21885 23192 23206 25981 26186 26279 26283 26982 27006 27053 27243 27256 367032.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/128/426?format=asciiOpticalInfrareddefaultJ/AJ/128/426/table2Subdwarf datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSObject namecharrmag? SDSS r-band magnitude (1)magfloatnullableg-r? SDSS (g-r) color (1)magfloatnullabler-i? SDSS (r-i) color (1)magfloatnullablei-z? SDSS (i-z) color (1)magfloatnullableTiO5The TiO5 molecular band indexfloatCaH1The CaH1 molecular band indexfloatCaH2The CaH2 molecular band indexfloatEW? Equivalent width of H{alpha} in Angstroms (2)0.1nmfloatnullableSpThe M spectral type subclassint_RAPosition (derived from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from SDSS name) (declination part)degpos.eq.dec;meta.main