J/ApJS/226/1ivo://CDS.VizieR/J/ApJS/226/1doi:10.26093/cds/vizier.22260001CDSJi W.Cui W.Liu C.Luo A.Zhao G.Zhang B.2018-05-31T11:17:56Z2016-11-16T07:44:01ZCDS support team

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

cds-question@unistra.frcarbon-starsinfrared-photometryspectroscopygiant-starsIn this work, we present the new catalog of carbon stars from the LAMOST DR2 catalog. In total, 894 carbon stars are identified from multiple line indices measured from the stellar spectra. We are able to identify the carbon stars by combining the CN bands in the red end with C_2_ and other lines. Moreover, we also classify the carbon stars into spectral sub-types of C-H, C-R, and C-N. These sub-types show distinct features in the multi-dimensional line indices, implying that in the future they can be used to identify carbon stars from larger spectroscopic data sets. While the C-N stars are clearly separated from the others in the line index space, we find no clear separation between the C-R and C-H sub-types. The C-R and C-H stars seem to smoothly transition from one to another. This may hint that the C-R and C-H stars may not be different in their origins, instead their spectra look different because of different metallicities. Due to the relatively low spectral resolution and lower signal-to-noise ratio, the ratio of ^12^C/^13^C is not measured and thus the C-J stars are not identified.2016ApJS..226....1Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/226/1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/149 : LAMOST DR2 catalogs (Luo+, 2016)III/227 : General Catalog of galactic Carbon stars, 3d Ed. (Alksnis+ 2001)J/A+A/589/A36 : Carbon stars spectra and photometry values (Gonneau+, 2016)J/other/RAA/15.1671 : New carbon stars from LAMOST survey (Si+, 2015)J/ApJ/765/12 : Carbon stars & DQ white dwarfs from SDSS-DR7+DR8 (Green, 2013)J/A+A/473/143 : RVs of C stars near Galactic plane (Demers+, 2007)J/AJ/127/2838 : Faint high-latitude carbon stars SDSS photom. (Downes+, 2004)J/AJ/124/1651 : Faint high-latitude carbon stars SDSS photom. (Margon+, 2002)J/other/Ap/41.356 : FBS 10th list of red stars (Gigoyan+, 1998)J/ApJS/105/419 : Spectral Atlas of Carbon Stars (Barnbaum+ 1996)http://dr2.lamost.org/ : LAMOST DR2 home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/226/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/226/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/226/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/226/1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/226/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/226/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/226/1/table3 (Carbon stars discovered in LAMOST DR2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/226/1/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/226/1/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/226/1/table3?GETtext/xml+votable180.050000true9.744609639.7511640.0055555555555555565/6063 6/205 261 345 466 501 730 743 761 771 774 808 824 831 865 891 919 929 961 962 969 971 991 1003 1004 1024 1030 1032 1041 1065 1074 1084 1085 1088 1100 1111 1117 1129 1130 1138 1139 1148 1154 1155 1158 1162 1165 1188 1198 1201 1204 1214 1219 1227 1242 1245 1246 1251 1254 1259 1267 1269 1272 1276 1277 1281 1283 1290 1303 1304 1305 1311 1318 1319 1325 1328 1336 1337 1339 1341 1352 1360 1364 1384 1403 1416 1422 1432 1433 1444 1446 1465 1491 1497 1498 1506 1551 1556 1560 1564 1569 1573 1578 1579 1584 1591 1593 1620 1624 1627 1649 1653 1655 1658 1661 1669 1670 1693 1738 1746 1751 1753 1754 1760 1761 1763 1768 1792 1810 1815 1852 1853 1860 1866 1867 1874 1915 1919 1931 1935 1937 1948 1958 1961 1964 1968 1991 1997 2005 2017 2020 2158 2170 2204 2248 2325 2335 2367 2401 2411 2458 2461 2479 2484 2502 2507 2509 2523 2557 2560 2571 2586 2593 2619 2621 2635 2645 2651 2653 2655 2659 2676 2693 2705 2707 2724 2732 2736 2750 2754 2769 2825 2828 2970 2971 2992 2996 2997 3075 3077 3086 3100 3103 3104 3105 3108 3109 3120 3128 3135 3141 3191 3197 3213 3218 3221 3228 3248 3249 3342 3364 4109 4116 4213 4238 4316 4367 4394 4395 4401 4449 4518 4525 4539 4555 4595 4602 4614 4623 4646 4689 4691 4751 4760 4766 4769 4773 4774 4781 4782 4787 4788 4793 4809 4834 4841 4846 4868 4886 4892 4946 4952 4987 5172 5181 5275 5321 5347 5462 5502 5546 5579 5751 6149 6157 6160 6174 6179 6184 6198 6208 6216 6223 6242 6267 6269 6275 6283 6290 6294 6303 6305 6324 6342 6351 6380 6406 6419 6458 6467 6493 6525 6532 6610 6623 6641 6655 6657 6658 6661 6666 6682 6692 6693 6705 6720 6730 6731 6755 6776 6784 6792 6802 6804 6809 6844 6848 6896 6946 6964 6997 7068 7078 7079 7102 7111 7132 7154 7336 8196 8201 8224 8238 8250 8292 8341 8388 8391 8444 8546 8571 8575 8697 8911 8979 9014 9068 9077 9116 9130 9260 9299 9336 9412 9422 9455 9457 9472 9539 9555 9614 9652 9657 9726 9738 9989 9997 10004 10028 10081 10292 10325 10331 10386 10436 10748 10766 10772 10947 10967 10992 11213 11342 11356 11360 12606 12647 12653 12657 12679 12684 12689 12694 12737 12741 12794 12799 13346 13440 13478 13501 13629 13687 13749 13788 13886 13975 13979 14769 14774 14795 14816 14934 14936 14940 14943 14957 14963 14970 14971 14972 14996 15060 15061 15084 15106 15107 15112 15123 17639 17872 17885 18001 18079 18098 18867 18870 18882 18954 19067 19075 19143 19251 19310 19335 19348 19350 19457 19458 19467 19955 19960 19963 19964 20127 20132 20143 20166 20169 20175 20189 20252 20330 20421 21358 21370 21441 21443 21449 21452 21453 21457 21460 21461 21462 21465 21753 21755 21758 21784 21790 21794 21828 21852 21858 21895 21897 21911 21928 21931 21936 21945 21946 21989 22000 22102 22171 22193 22194 22195 22197 22198 22200 22204 22217 22218 22230 22239 22251 22252 22257 22260 22261 22262 22268 22269 22270 22279 22298 22330 22331 22332 22338 22354 22355 22356 22361 22366 22378 22422 22428 22431 22440 22444 22445 22454 22455 22459 22460 22465 22470 22475 22484 22485 22498 22508 22764 22766 22800 22809 22812 22957 22962 23004 23006 23007 23100 23398 23419 23420 23636 23638 23663 23674 23675 23678 23702 23711 23714 23715 23718 23725 23736 23748 23750 23759 23766 23772 23781 23782 23791 23793 23796 23802 23803 23804 23812 23813 23814 23826 23828 23829 23830 23833 23836 23838 23839 23844 23855 23873 23874 23875 23904 23911 23914 23919 23931 23933 23934 23935 23951 23978 23979 23983 23988 23989 23992 23996 24002 24013 24021 24027 24030 24031 24041 24050 24052 24054 24055 24058 24059 24061 24062 24068 24082 24144 24147 24148 24151 24155 24157 24177 24179 24181 24183 24215 24238 24246 24265 24266 24267 24288 24289 24322 24326 24328 24329 24331 24332 24333 24335 24336 24340 24344 24345 24351 24355 24356 24360 24363 24366 24370 24375 24376 24379 24382 24383 24392 24397 24405 24422 24424 24428 24433 24441 24444 24445 24449 24450 24451 24453 24458 24460 24466 24472 24475 24476 24482 24483 24484 24490 24495 24497 24504 24506 24512 24515 24520 24521 24526 24530 24534 24535 24540 24545 24553 24558 24559 24563 24569 24574 25558 25767 25844 26020 26026 26031 26057 26081 26117 26140 26153 26159 26200 26313 26337 26340 26401 26420 26431 26450 26526 26540 26747 26839 26921 26949 26963 27005 27016 27068 27103 27247 27281 27318 27369 27387 27407 27486 27577 27586 27618 27731 27737 27790 27820 27838 27846 27847 27868 27873 27989 27994 27999 28059 28067 28122 28313 28314 28318 28412 28447 28483 31081 31187 31302 31343 31396 31406 31436 31448 31452 31457 31593 31634 31642 31661 31710 31711 31729 31734 31901 31921 31926 31929 31934 32292 32507 32551 32556 32649 32693 32702 32730 32756 45040 490058.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/226/1?format=asciiInfrareddefaultJ/ApJS/226/1/table3Carbon stars discovered in LAMOST DR2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintspecIdObservation IDmeta.id;obslongLAMOSTDesignation in the LAMOST DR2 catalogue (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJmag[3.9/15.1] 2MASS J band magnitudemagphot.mag;em.IR.JfloatHmag[2.5/14.5] 2MASS H band magnitudemagphot.mag;em.IR.HfloatKsmag[1.6/14.5] 2MASS K_S_ band magnitudemagphot.mag;em.IR.KfloatSpTSpectrum sub-type (1)meta.notecharOTypeObject type from SIMBAD (2)src.classcharHmu[-5/14.2]? Reduced proper motion (3)magphys.magAbsfloatnullableEvolEvolution phase; ("Dwarf"=83 sources or blank = Giant)src.classcharDR1Display data from LAMOST DR1 catalog (V/146) for this source; if anymeta.ref.urlintnullable2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 0.5"meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar