J/AJ/127/1014ivo://CDS.VizieR/J/AJ/127/1014doi:10.26093/cds/vizier.51271014CDSSung H.Bessell M.S.2023-04-06T16:51:00Z2004-11-30T20:51:15ZCDS support team

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

cds-question@unistra.fropen-star-clustersx-ray-sourcesccd-photometryinfrared-photometryvisible-astronomybroad-band-photometryh-alpha-photometryWe present UBVRI and H{alpha} photometry of the extremely compact, starburst cluster NGC 3603. Ground-based images, Hubble Space Telescope (HST) archival data, as well as Chandra X-ray data have been used for this study. We present, for the first time, optical color-magnitude diagrams (CMDs) for the stars in the cluster core down to V=22mag. A well-defined main sequence (MS) as well as low-mass pre-main-sequence (PMS) stars can clearly be seen in the CMDs. This result confirms the finding by Eisenhauer et al. (1998ApJ...498..278E) that low-mass stars are forming in the starburst cluster. We also derive an age (1+/-1Myr) and distance of the cluster (V_0_-M_V_=14.2+/-0.2mag, i.e., d=6.9+/-0.6kpc).2004AJ....127.1014Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/1014CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/1014https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/1014http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/1014https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/1014https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/1014http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/1014GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/1014/table2 (Stars brighter than V=14 magnitudes in the HST/PC1 region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/1014/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/1014/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/1014/table2?GETtext/xml+votable180.050000true168.7841667-61.26308330.005555555555555556Cone search capability for table J/AJ/127/1014/table3 (X-Ray sources without optical counterparts brighter than V~20 magnitudes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/1014/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/1014/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/1014/table3?GETtext/xml+votable180.050000true168.5050417-61.31708330.005555555555555556Cone search capability for table J/AJ/127/1014/table4 (H{alpha} Emission Stars and Candidates from Siding Spring Observatory Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/1014/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/1014/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/1014/table4?GETtext/xml+votable180.050000true168.372875-61.264250.005555555555555556Cone search capability for table J/AJ/127/1014/table5 (H{alpha} Emission Stars and Candidates from HST Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/1014/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/1014/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/1014/table5?GETtext/xml+votable180.050000true168.7646667-61.26272220.0055555555555555566/37921 37923-37924 37926https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/1014?format=asciiX-rayOpticalInfrareddefaultJ/AJ/127/1014/table2Stars brighter than V=14 magnitudes in the HST/PC1 regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[SB2004]Sequential numberintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainVmagV magnitudemagfloatIcmagCousins I magnitudemagfloatV-IcCousins V-I colour indexmagfloatRc-Ic? Cousins R-I colour indexmagfloatnullableSpTypeMK Spectral typecharRemRemark (G1)J/AJ/127/1014/table3X-Ray sources without optical counterparts brighter than V~20 magnitudesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[SB2004]XSequential number, [SB2004] X NN in SimbadintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSignSignificancefloatCRCount Rate in the 0.3-10keV bandct/sdoublee_CRrms uncertainty on CRct/sdoubleJ/AJ/127/1014/table4H{alpha} Emission Stars and Candidates from Siding Spring Observatory ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[SB2004]Identification number (1)intRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainVmagThe V-band magnitudemagfloatV-IcThe Cousisns (V-I) colormagfloatB-VThe (B-V) colormagfloatU-B? The (U-B) colormagfloatnullableRc-HaThe Cousisns (R-H{alpha}) colormagfloatD(Rc-Ha)(Rc-H{alpha}) color difference between H{alpha} emission PMS stars and normal MS starsmagfloatRemAdditional remarks (G1)J/AJ/127/1014/table5H{alpha} Emission Stars and Candidates from HST ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[SB2004]Identification numberintm_[SB2004]? Second Identification numberintnullableRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainVmagThe V-band magnitudemagfloatV-IcThe Cousins (V-I) colormagfloatDHaH{alpha} magnitude difference between H{alpha} emission PMS stars and normal MS stars (1)magfloatRemAdditional remarks (G1)