J/other/RAA/15.1ivo://CDS.VizieR/J/other/RAA/15.1671doi:10.26093/cds/vizier/dx/bfkbghbCDSSi J.-M.Li Y.-B.Luo A.-L.Tu L.-P.Shi Z.-X.Zhang J.-N.Wei P.,Zhao G.Wu Y.-H.Wu F.-C.Zhao Y.-H.2026-02-10T20:07:12Z2016-06-27T14:14:22ZCDS support team

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

cds-question@unistra.frcarbon-starsvisible-astronomysloan-photometryinfrared-photometryCarbon stars are excellent kinematic tracers of galaxies and can serve as a viable standard candle, so it is worthwhile to automatically search for them in a large amount of spectra. In this paper, we apply the efficient manifold ranking algorithm to search for carbon stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) pilot survey, whose performance and robustness are verified comprehensively with four test experiments. Using this algorithm, we find a total of 183 carbon stars, and 158 of them are new findings. According to different spectral features, our carbon stars are classified as 58 C-H stars, 11 C-H star candidates, 56 C-R stars, ten C-R star candidates, 30 C-N stars, three C-N star candidates, and four C-J stars. There are also ten objects which have no spectral type because of low spectral quality, and a composite spectrum consisting of a white dwarf and a carbon star. Applying the support vector machine algorithm, we obtain the linear optimum classification plane in the J-H versus H-Ks color diagram which can be used to distinguish C-H from C-N stars with their J-H and H-Ks colors. In addition, we identify 18 dwarf carbon stars with their relatively high proper motions, and find three carbon stars with FUV detections likely have optical invisible companions by cross matching with data from the Galaxy Evolution Explorer. In the end, we detect four variable carbon stars with the Northern Sky Variability Survey, the Catalina Sky Survey and the LINEAR variability databases. According to their periods and amplitudes derived by fitting light curves with a sinusoidal function, three of them are likely semiregular variable stars and one is likely a Mira variable star.2015RAA....15.1671Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/15.1671CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/146 : LAMOST DR1 catalogs (Luo+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/15.1671https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/15.1671http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/15.1671https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/15.1671https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/15.1671http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/15.1671GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/15.1671/table3 (The new carbon star catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/15.1671/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/15.1671/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/15.1671/table3?GETtext/xml+votable180.050000true9.74462539.75116670.0055555555555555565/436 6/824 856 1095 1129 1158 1161 1276 1279 1302 1306 1311 1335-1336 1352 1354 1379 1422 1432 1449-1450 1458 1465 1619-1620 1624 1649 1654-1655 1661 1733 1743 1751 1753 1761 1763 1852-1853 1937 1940 2586 2619 2627 2705 3123 3125 3135 3177 3217 3230 3260 4362 4590 4595 4602 4637 4645 4861 4917 4933 4952 4987 5164 5201 5248 5275 5293 5374 5546 5751 5891 5921 5964 6210 6290 6320 6666-6667 6802 6804 6851 7213 9068 9446 9455-9457 10342 10386 10436 10967 11787 13440 13445 14573 14578 14730 17896 19045 20175 20189 20417 22230 22234 22237 22239 22246 22252 22259-22261 22263 22269-22270 22330-22332 22440 22444-22446 22459 23636 23638 23702 23711 23750 23826 23844 23855 23867 23956 24052 24061 24370 24379 24382 24391 24400-24401 24424 24463 24468 24470 24472 24484 24490 24492 24512 24515 24521 25969 25999 26020 26046 26082 26200 26420 26949 26965 27994 28412 28443 28447 28483 28485 28571 28585 31294 31779-31780 322921.1166583743361574e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/15.1671?format=asciiOpticalInfrareddefaultJ/other/RAA/15.1671/table3The new carbon star catalogSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameLAMOST designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharumag? SDSS u magnitudemagphot.mag;em.opt.Ufloatnullablegmag? SDSS g magnitudemagphot.mag;em.opt.Bfloatnullablermag? SDSS r magnitudemagphot.mag;em.opt.Rfloatnullableimag? SDSS i magnitudemagphot.mag;em.opt.Ifloatnullablezmag? SDSS z magnitudemagphot.mag;em.opt.IfloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.KfloatnullableSpTypeMK spectral type (1)src.spTypecharNote[du] Note (2)meta.notecharNew[Y/N] Y for new findingmeta.codechar_RAPosition from Name (right ascension part)degpos.eq.ra;meta.main_DEPosition from Name (declination part)degpos.eq.dec;meta.main