J/AcA/58/23ivo://CDS.VizieR/J/AcA/58/23doi:10.26093/cds/vizier.120580023CDSZloczewski K.Kaluzny J.Hartman J.2025-09-25T20:15:09Z2009-06-22T06:45:29ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-associationsvisible-astronomysloan-photometryWe present a catalog of 4780 extended sources from the outer field of M33. The catalog includes 73 previously identified clusters or planetary nebulae, 1153 likely background galaxies, and 3554 new candidate stellar clusters. The survey is based on deep ground-based images obtained with the MegaCam instrument on the CFHT telescope. We provide g'r'i' photometry for detected objects as well as estimates of the FWHM and ellipticity of their profiles. The sample includes 122 new, relatively bright, likely globular clusters. Follow-up observations of fainter candidates from our list may extend the faint-end of the observed luminosity function of globular clusters in M33 by up to 3 magnitudes. The catalog includes several cluster candidates located in the outskirts of the galaxy. These objects are promising targets for deep photometry with the HST. We present a color-magnitude diagram for one detected object, showing that it is an extended and low-surface-brightness old cluster located at an angular distance of 27' from the center of M33.2008AcA....58...23Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/58/23CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/371/1405 : Variables in M33 (Hartman+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/58/23https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/58/23http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/58/23https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/58/23https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/58/23http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/58/23GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AcA/58/23/table1 (The catalog of extended objects in the outer part of M33 galaxy (version 2008.04.17))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/58/23/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/58/23/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/58/23/table1?GETtext/xml+votable180.050000true23.9095231.108950.0055555555555555566/2154-2155 2240-2241https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AcA/58/23?format=asciiOpticaldefaultJ/AcA/58/23/table1The catalog of extended objects in the outer part of M33 galaxy (version 2008.04.17)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentification number, NN-N-NNN (1)meta.id;meta.maincharRAJ2000Right ascension in decimal degrees (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000.0)degpos.eq.dec;meta.maing'mag? g' magnitude in 1 FWHM aperture (4)magphot.mag;em.opt.Bfloatnullablee_g'mag? rms uncertainty on g'magmagstat.error;phot.mag;em.opt.Bfloatnullablef_g'mag? SExtractor flags for g' filter (2)meta.codeintnullabler'mag? r' magnitude in 1 FWHM aperture (4)magphot.mag;em.opt.Rfloatnullablee_r'mag? rms uncertainty on r'magmagstat.error;phot.mag;em.opt.Rfloatnullablef_r'mag? SExtractor flags for r' filter (2)meta.codeintnullablei'mag? i' magnitude in 1 FWHM aperture (4)magphot.mag;em.opt.Ifloatnullablee_i'mag? rms uncertainty on i'magmagstat.error;phot.mag;em.opt.Ifloatnullablef_i'mag? SExtractor flags for i' filter (2)meta.codeintnullableg'mag2? g' magnitude in 2 FWHM aperture (4)magphot.mag;em.opt.Bfloatnullablee_g'mag2? rms uncertainty on g'mag2magstat.error;phot.mag;em.opt.Bfloatnullabler'mag2? r' magnitude in 2 FWHM aperture (4)magphot.mag;em.opt.Rfloatnullablee_r'mag2? rms uncertainty on r'mag2magstat.error;phot.mag;em.opt.Rfloatnullablei'mag2? i' magnitude in 2 FWHM aperture (4)magphot.mag;em.opt.Ifloatnullablee_i'mag2? rms uncertainty on i'mag2magstat.error;phot.mag;em.opt.IfloatnullableFWHM? SExtractor FWHM (in g' band)arcsecphys.angSizefloatnullableell? SExtractor ellipticity (in g' band)src.ellipticityfloatnullableFWHM2? FWHM returned by IRAF/imexam taskarcsecphys.angSizefloatnullableCl[-1/2] Classification type (3)src.classintn_Cl[*] * for objects checked on HST/ACS imagesmeta.notechar