J/ApJ/836/64ivo://CDS.VizieR/J/ApJ/836/64doi:10.26093/cds/vizier.18360064CDSHumphreys R.M.Gordon M.S.Martin J.C.Weis K.Hahn D.2022-04-04T08:46:14Z2017-10-19T12:33:55ZCDS support team

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

cds-question@unistra.frvariable-starsgiant-starsinfrared-photometryvisible-astronomybroad-band-photometrygalaxiesspectroscopyIn this series of papers we have presented the results of a spectroscopic survey of luminous stars in the nearby spirals M31 and M33. Here, we present spectroscopy of 132 additional stars. Most have emission-line spectra, including luminous blue variables (LBVs) and candidate LBVs, Fe II emission line stars, the B[e] supergiants, and the warm hypergiants. Many of these objects are spectroscopically similar and are often confused with each other. We examine their similarities and differences and propose the following guidelines that can be used to help distinguish these stars in future work. (1) The B[e] supergiants have emission lines of [OI] and [FeII] in their spectra. Most of the spectroscopically confirmed sgB[e] stars also have warm circumstellar dust in their spectral energy distributions (SEDs). (2) Confirmed LBVs do not have the [OI] emission lines in their spectra. Some LBVs have [FeII] emission lines, but not all. Their SEDs show free-free emission in the near-infrared but no evidence for warm dust. Their most important and defining characteristic is the S Dor-type variability. (3) The warm hypergiants spectroscopically resemble the LBVs in their dense wind state and the B[e] supergiants. However, they are very dusty. Some have [FeII] and [OI] emission in their spectra like the sgB[e] stars, but are distinguished by their A- and F-type absorption-line spectra. In contrast, the B[e] supergiant spectra have strong continua and few if any apparent absorption lines. Candidate LBVs should share the spectral characteristics of the confirmed LBVs with low outflow velocities and the lack of warm circumstellar dust.2017ApJ...836...64Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/836/64CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/110/2715 : UBV photometry in NGC 6822, M31 and M33 (Massey+ 1995)J/AJ/115/1016 : M 31B eclipsing binaries and Cepheids (Kaluzny+ 1998)J/ApJ/505/793 : New WR star in M33 (Massey+, 1998)J/MNRAS/371/1405 : Variables in M33 (Hartman+, 2006)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/AJ/133/2393 : UBVRI phot. in 7 Local Group dwarfs galaxies (Massey+, 2007)J/AJ/134/2474 : H{alpha} emission-line stars in 7 dwarfs gal. (Massey+, 2007)J/ApJ/664/850 : Spitzer observations of stars in M33 (McQuinn+, 2007)J/ApJ/687/230 : Survey of M31 with Spitzer (Mould+, 2008)J/MNRAS/395/1409 : Type II-P SN progenitor constraints (Smartt+, 2009)J/ApJ/705/1364 : MIR catalog of point sources in M33 (Thompson+, 2009)J/ApJ/733/123 : The Wolf-Rayet content of M33 (NGC 598) (Neugent+, 2011)J/ApJ/790/48 : Variable stars in M31 & M33. II. LBVs (Humphreys+, 2014)J/ApJ/795/170 : Sample SNRs for M31 and M33 (Jennings+, 2014)J/ApJ/825/50 : Variable stars in M31 & M33. III. YSGs & RSGs (Gordon+, 2016)J/AJ/152/62 : Revised LGGS UBVRI photom. of M31 & M33 stars (Massey+, 2016)http://etacar.umn.edu/LuminousStars/M31M33/ : M31 & M33 HST Treasury Programhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/836/64https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/836/64http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/836/64https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/836/64https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/836/64http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/836/64GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/836/64/table2 (Luminous stars and variables in M31 and M33: new spectra 2013-2015)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/836/64/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/836/64/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/836/64/table2?GETtext/xml+votable180.050000true9.795166740.60619440.005555555555555556Cone search capability for table J/ApJ/836/64/table4 (Multi-wavelength photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/836/64/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/836/64/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/836/64/table4?GETtext/xml+votable180.050000true9.795166740.60619440.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJ/836/646/2154-2155 2240-2241 2622-2623 2666 2708-2709 27522.0616683193919197e-20 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/836/64?format=asciiOpticalInfrareddefaultJ/ApJ/836/64/table2Luminous stars and variables in M31 and M33: new spectra 2013-2015LGGSLocal Group Galaxy Survey (LGGS) identifier from Massey+, 2016, J/AJ/152/62meta.idcharGalGalaxy identifier (M31 or M33)meta.id.parentcharOTypeSpectroscopic groupsrc.spTypecharDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainYearYear(s) observed; last two digitstime.epochcharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identifiermeta.id;meta.maincharprimaryf_Star[a] Flag on Star (1)meta.codecharPDisplay the multi-wavelength photometry (table 4) for this starmeta.ref.urlcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainNotesOther identifier(s), notes and/or referencesmeta.notecharpPDisplay data from previous papers II and III (Humphreys+, 2014, J/ApJ/790/48 and Gordon+, 2016, J/ApJ/825/50) within 2"meta.ref.urlintnullableMCatDisplay data from M31 and M33 catalogs (McQuinn+, 2007, J/ApJ/664/850 and Thompson+, 2009, J/ApJ/705/1364) within 2"meta.ref.urlintnullableJ/ApJ/836/64/table4Multi-wavelength photometryKsmag[11/16.3]? The 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatnullableWISEDisplay the WISE data (Cutri+ 2012, II/311) within 3"meta.ref.urlchar2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 3"meta.ref.urlcharSEDmeta.ref.urlchar_RAPositions from Table 2 or corresponding LGSS name for M33C-14239 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Table 2 or corresponding LGSS name for M33C-14239 (declination part)degpos.eq.dec;meta.mainStarStar identifiermeta.id;meta.maincharVarVaribility flag ("var." (15 occurrences) or "var.?" (1 occurrence))meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy identifier (M31 or M33)meta.id.parentcharUmag[15.3/20]? The Johnson U band magnitudemagphot.mag;em.opt.UfloatnullableBmag[15/22.4] The Johnson B band magnitudemagphot.mag;em.opt.BfloatVmag[14/20.6] The Johnson V band magnitudemagphot.mag;em.opt.VfloatRmag[13.6/20]? The Kron-Cousins R band magnitudemagphot.mag;em.opt.RfloatnullableImag[13.3/19.7] The Kron-Cousins I band magnitudemagphot.mag;em.opt.IfloatJmag[12/17.5]? The 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag[11.4/17]? The 2MASS H band magnitudemagphot.mag;em.IR.Hfloatnullable3.6mag[10.9/17.6]? Spitzer/IRAC 3.6um band magnitudemagphot.mag;em.IR.3-4umfloatnullable4.5mag[11/17.6]? Spitzer/IRAC 4.5um band magnitudemagphot.mag;em.IR.4-8umfloatnullable5.8mag[11/14.1]? Spitzer/IRAC 5.8um band magnitudemagphot.flux.density;em.IR.4-8umfloatnullable8mag[7.8/13.4]? Spitzer/IRAC 8.0um band magnitudemagphot.flux.density;em.IR.8-15umfloatnullable3.4mag[10.6/17]? WISE 3.4 micron band magnitudemagphot.mag;em.IR.3-4umfloatnullable4.6mag[10.6/16.3]? WISE 4.6 micron band magnitudemagphot.mag;em.IR.4-8umfloatnullable12mag[6.9/13.1]? WISE 12 micron band magnitudemagphot.flux.density;em.IR.8-15umfloatnullable22mag[3.9/9.6]? WISE 22 micron band magnitudemagphot.flux.density;em.IR.15-30umfloatnullable