J/PASP/111/685ivo://CDS.VizieR/J/PASP/111/685doi:10.26093/cds/vizier.61110685CDSHodge P.W.Balsley J.Wyder T.K.Skelton B.P.2025-09-09T14:12:36Z2003-11-10T10:07:11ZCDS support team

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

cds-question@unistra.frh-ii-regionsvisible-astronomyh-alpha-photometryWe have identified a total of 1272 newly recognized emission regions in M33. Combined with the previously cataloged total of 1066 H II regions and supernova remnants, this brings M33's total to 2338 emission regions. This paper provides photometry of the new objects in H{alpha}, which is combined with data from previous catalogs to produce a global H II region luminosity function (corrected for incompleteness) that reaches a faint luminosity limit of 2x10^34^ergs/s and shows a broad maximum with a peak frequency at luminosities of 6x10^35^ergs/s. We also plot the H II region size distribution and comment on unusual morphologies.1999PASP..111..685Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/111/685CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/110/2739 : H-alpha emitting regions in M33 (Calzetti+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/111/685https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/111/685http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/111/685https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/111/685https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/111/685http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/111/685GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PASP/111/685/table1 (New emission regions in M 33)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PASP/111/685/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/PASP/111/685/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PASP/111/685/table1?GETtext/xml+votable180.050000true23.11958330.6119440.0055555555555555566/2154-2155 2240-2241https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PASP/111/685?format=asciiOpticaldefaultJ/PASP/111/685/table1New emission regions in M 33recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHBWHBW sequential numbermeta.id;meta.mainintRA2000Right ascension (2000)pos.eq.ra;meta.mainDE2000Declination (2000)pos.eq.dec;meta.mainSHa? H{alpha} integrated flux (1)1e-15mW.m**-2phot.flux;em.line.HalphafloatnullableArea? Area (2)arcsec**2phys.areaintnullableComComments (3)meta.notechar_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.decnullableindexed