J/AJ/110/2739ivo://CDS.VizieR/J/AJ/110/2739doi:10.26093/cds/vizier.51102739CDSCalzetti D.Kinney A.L.Ford H.Doggett J.Long K.S.2023-04-06T16:50:19Z1997-12-09T20:31:41ZCDS support team

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

cds-question@unistra.frearly-type-starsemission-line-starsWe report finding charts and accurate positions for 432 compact H{alpha} emitting regions in the Local Group Galaxy M33 (NGC 598), in an effort to isolate candidates for an SS433-like stellar system. The objects were extracted from narrowband images, centered in the rest frame H{alpha} ({lambda}6563A) and in the red continuum at 6100A. The atlas is complete down to V=~20, and includes 279 compact H II regions and 153 line emitting point-like sources. The point-like sources undoubtedly include a variety of objects: very small H II regions, early type stars with intense stellar winds, and Wolf-Rayet stars, but should also contain objects with the characteristics of SS433. This extensive survey of compact H{alpha} regions in M33 is a first step towards the identification of peculiar stellar systems like SS433 in external galaxies.1995AJ....110.2739Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/110/2739CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/110/2739https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/110/2739http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/110/2739https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/110/2739https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/110/2739http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/110/2739GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/110/2739/table1 (H-alpha line emission candidates.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/110/2739/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/110/2739/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/110/2739/table1?GETtext/xml+votable180.050000true23.4516895430.659888370.005555555555555556Cone search capability for table J/AJ/110/2739/table2 (Halpha-embedded candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/110/2739/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/110/2739/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/110/2739/table2?GETtext/xml+votable180.050000true23.4371846530.607857590.0055555555555555566/2154-2155https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/110/2739?format=asciiOpticaldefaultJ/AJ/110/2739/table1H-alpha line emission candidates.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number of the star in the table.meta.id;meta.mainintFieldIdentification of the field in which the star can be found.meta.id;obs.fieldcharNoIdentification number of the star in the fieldmeta.numberintn_No[eb] "e": emission line candidate (table1) "b": Halpha embedded candidate (table2)meta.notecharRA1950Right ascension (1950)pos.eq.ra;meta.mainDE1950Declination (1950)pos.eq.dec;meta.mainl_EWLimit flag on EWmeta.code.error;spect.line.eqWidthcharEW? Equivalent width of the H-alpha line emission. (only in table1)0.1nmspect.line.eqWidth;em.line.HalphafloatnullableVmag? V magnitude, calculated from the continuum at 6100 A.magphot.mag;em.opt.Vfloatnullable_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedJ/AJ/110/2739/table2Halpha-embedded candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number of the star in the table.meta.id;meta.mainintFieldIdentification of the field in which the star can be found.meta.id;obs.fieldcharNoIdentification number of the star in the fieldmeta.numberintn_No[eb] "e": emission line candidate (table1) "b": Halpha embedded candidate (table2)meta.notecharRA1950Right ascension (1950)pos.eq.ra;meta.mainDE1950Declination (1950)pos.eq.dec;meta.mainl_EWLimit flag on EWmeta.code.error;spect.line.eqWidthcharEW? Equivalent width of the H-alpha line emission. (only in table1)0.1nmspect.line.eqWidth;em.line.HalphafloatnullableVmag? V magnitude, calculated from the continuum at 6100 A.magphot.mag;em.opt.Vfloatnullable_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedJ/AJ/110/2739/table4Cross-correlation between candidates and known Supernova Remnant and X-ray sources.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number from Tables 1 or 2.meta.id;meta.mainintNoIdentification number from Tables 1 or 2.meta.idintn_No[eb] e: emission line; b: Halpha embeddedmeta.notecharSNRIdentification of the Supernova Remnant from Long et al. 1990, and Gordon et al. 1995.meta.idcharrhoSNR? Separation between the candidate and the Supernova Remnant.arcsecpos.angDistancefloatnullablePSPCIdentification of the X-ray source detected with the ROSAT PSPC (Long et al. 1990)meta.idcharrhoPSPC? Separation between the candidate and the X-ray source.arcsecpos.angDistancefloatnullableHRIIdentification of the X-ray source detected with the ROSAT HRI (Schulman & Bregman 1995)meta.idcharrhoHRI? Separation between the candidate and the X-ray source.arcsecpos.angDistancefloatnullableJ/AJ/110/2739/table5Cross-correlation between candidates and known Radio sources.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number from Tables 1 or 2.meta.recordintNoIdentification number from Tables 1 or 2.meta.id;meta.mainintn_No[eb] e: emission-line; b: Halpha embeddedmeta.notecharIDradioIdentification of the Radio source from Gordon et al. 1995.meta.idintrhoSeparation between the candidate and the Radio source.arcsecpos.angDistancefloat