J/other/SCPMA/57ivo://CDS.VizieR/J/other/SCPMA/57.176CDSSi J.M.Luo A.L.Li Y.B.Zhang J.N.Wei P.Wu Y.H.Wu F.C.Zhao Y.H.2023-10-03T13:08:25Z2022-12-30T08:26:31ZCDS support team

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

cds-question@unistra.frwhite-dwarf-starscarbon-starsCarbon stars and DZ white dwarfs are two types of rare objects in the Galaxy. In this paper, we have applied the label propagation algorithm to search for these two types of stars from Data Release Eight (DR8) of the Sloan Digital Sky Survey (SDSS), which is verified to be efficient by calculating precision and recall. From nearly two million spectra including stars, galaxies and QSOs, we have found 260 new carbon stars in which 96 stars have been identified as dwarfs and 7 identified as giants, and 11 composition spectrum systems (each of them consists of a white dwarf and a carbon star). Similarly, using the label propagation method, we have obtained 29 new DZ white dwarfs from SDSS DR8. Compared with PCA reconstructed spectra, the 29 findings are typical DZ white dwarfs. We have also investigated their proper motions by comparing them with proper motion distribution of 9374 white dwarfs, and found that they satisfy the current observed white dwarfs by SDSS generally have large proper motions. In addition, we have estimated their effective temperatures by fitting the polynomial relationship between effective temperature and g-r color of known DZ white dwarfs, and found 12 of the 29 new DZ white dwarfs are cool, in which nine are between 6000K and 6600K, and three are below 6000K.2014SCPMA..57..176Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/SCPMA/57.176CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/SCPMA/57.176https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/SCPMA/57.176http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/SCPMA/57.176https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/SCPMA/57.176https://vizier.iucaa.in/viz-bin/votable?-source=J/other/SCPMA/57.176http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/SCPMA/57.176GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/SCPMA/57.176/table3 (New carbon star catalog (incomplete table))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/SCPMA/57.176/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/other/SCPMA/57.176/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/SCPMA/57.176/table3?GETtext/xml+votable180.050000true0.096825856.15230030.005555555555555556Cone search capability for table J/other/SCPMA/57.176/table4 (Composition spectrum systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/SCPMA/57.176/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/other/SCPMA/57.176/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/SCPMA/57.176/table4?GETtext/xml+votable180.050000true22.52971830.44318940.005555555555555556Cone search capability for table J/other/SCPMA/57.176/table5 (New DZ white dwarfs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/SCPMA/57.176/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/other/SCPMA/57.176/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/SCPMA/57.176/table5?GETtext/xml+votable180.050000true11.246086915.30602860.0055555555555555566/2990-2991 4328 4645 4718 4733 5110 5140 5236 5367 5431 5871 6263 6439 8350 8526 9116 9125 9288 9416 9853 10542 10623 11336 11392 16797 17241 17370 17550 17554 17573 17763 18012 18017 18024 18026 18030 18176 18300 18303 19524 19748 19750 19760 19943 20248 22948 22960 26490 27061 27397 27543 27545 27719 28095 28177 28205 315351.1166583743361574e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/SCPMA/57.176?format=asciidefaultJ/other/SCPMA/57.176/table3New carbon star catalog (incomplete table)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (SDSS JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharumag? SDSS u magnitude (1)magphot.mag;em.opt.Ufloatnullablegmag? SDSS g magnitude (1)magphot.mag;em.opt.Bfloatnullablermag? SDSS r magnitude (1)magphot.mag;em.opt.Rfloatnullableimag? SDSS i magnitude (1)magphot.mag;em.opt.Ifloatnullablezmag? SDSS z magnitude (1)magphot.mag;em.opt.IfloatnullableJmag? 2MASS J magnitude (1)magphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitude (1)magphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitude (1)magphot.mag;em.IR.KfloatnullablepmRA? Proper motion along RA, pmRA*cosDE (1)mas/yrpos.pm;pos.eq.rafloatnullablepmDE? Proper motion along DE (1)mas/yrpos.pm;pos.eq.decfloatnullablee_pmRA? rms uncertainty on pmRA (1)mas/yrstat.error;pos.pm;pos.eq.rafloatnullablee_pmDE? rms uncertainty on pmDE (1)mas/yrstat.error;pos.pm;pos.eq.decfloatnullableClassClassification (2)src.classchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/other/SCPMA/57.176/table4Composition spectrum systemsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (SDSS JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharn_SDSS[a] a for objects observed twicemeta.notecharPlateSDSS Plate identifiermeta.id;instr.plateintMJDSDSS MJD identifiermeta.idintFiberSDSS Fiber identifiermeta.idintumag? 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.Ifloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/other/SCPMA/57.176/table5New DZ white dwarfsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_SDSS[a] a:Proper motion is provided by PPMXL catalogmeta.notecharumag? SDSS u magnitude (1)magphot.mag;em.opt.Ufloatnullablegmag? SDSS g magnitude (1)magphot.mag;em.opt.Bfloatnullablermag? SDSS r magnitude (1)magphot.mag;em.opt.Rfloatnullableimag? SDSS i magnitude (1)magphot.mag;em.opt.Ifloatnullablezmag? SDSS z magnitude (1)magphot.mag;em.opt.IfloatnullableTeffEffective temperatureKphys.temperature.effectiveintpmRA? Proper motion along RA, pmRA&cosDE (1)mas/yrpos.pm;pos.eq.rafloatnullablepmDE? Proper motion along DE (1)mas/yrpos.pm;pos.eq.decfloatnullablee_pmRA? rms uncertainty on pmRA (1)mas/yrstat.error;pos.pm;pos.eq.rafloatnullablee_pmDE? rms uncertainty on pmDE (1)mas/yrstat.error;pos.pm;pos.eq.decfloatnullablepm? Total proper motionmas/yrpos.pmfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlcharSDSSSDSS name (SDSS JHHMMSS.ss+DDMMSS.s)meta.id;meta.mainchar