J/ApJ/518/859ivo://CDS.VizieR/J/ApJ/518/859doi:10.26093/cds/vizier.15180859CDSKeenan P.C.Barnbaum C.2000-03-25T08:49:39Z2000-03-25T09:49:29ZCDS support team

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

cds-question@unistra.frmorgan-keenan-classificationvisible-astronomytrigonometric-parallaxstellar-spectral-typeslate-type-starsstandard-starsThe Hipparcos parallaxes of cool giants are utilized in two ways in this paper. First, a plot of reduced parallaxes of stars brighter than 6.5, as a function of spectral type, for the first time separates members of the clump from stars in the main giant ridge. A slight modification of the MK luminosity standards has been made so that luminosity class IIIb defines members of the clump, and nearly all of the class III stars fall within the main giant ridge. Second, a new calibration of MK luminosity classes III and IIIb in terms of visual absolute magnitudes has been made.1999ApJ...518..859Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/518/859CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)III/150 : Perkins Revised MK Types for the Cooler Stars (Keenan+ 1989)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/518/859https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/518/859http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/518/859https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/518/859https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/518/859http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/518/859GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/518/859/table1 (Revised MK types for cool stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/518/859/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/518/859/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/518/859/table1?GETtext/xml+votable180.050000true1.325-5.70.0055555555555555566/15 79 254 377 428 737 915 998 1015 1249 1410 1535 1768 2177 2202 2282 2472 2499 2755 2828 2927 2973 3102 3208 3268 3619 3799 4146 4350 4624 4690 4737 4768 4769 6166 6173 6196 6203 6219 6224 6379 6472 6510 6736 6740 6807 6966 7040 7422 7745 7760 7937 17272 17368 17432 17487 17551 17608 17620 17670 17708 17852 18166 18204 18227 18276 18312 18416 19534 19761 19825 19879 20543 20617 20893 21089 21369 21423 21457 21768 21885 21940 22015 22214 22483 22553 22798 22855 22900 22988 23048 23071 23421 23539 23540 23822 23995 23996 24358 24420 24522 24557 32994 33103 33201 33228 33249 33357 33377 33628 33797 33822 34278 34520 34616 34664 35025 35069 35080 35116 35118 35185 35984 36060 36233 36317 36498 36759 36803 37398 37592 38913 39256 39297 39365 39412 39739 39905 40095 40573 40690https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/518/859?format=asciiOpticaldefaultJ/ApJ/518/859/table1Revised MK types for cool starsRAJ2000Right Ascension (J2000)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameStar namecharHDHenry Draper catalog numberintSimbadask the SIMBAD data-base about this objectcharVmagV band magnitudemagfloatf_Vmag[v] Indicates a variable starcharDEJ2000Declination (J2000)ClassSpectral and Luminosity typecharf_ClassIndicates star is not a reliable standard for stars of normal solar compositioncharParaReduced parallax (x10^-5^)1e-05arcsecinte_ParaUncertainty in Para1e-05arcsecint