J/AJ/133/44ivo://CDS.VizieR/J/AJ/133/44doi:10.26093/cds/vizier.51330044CDSSabbi E.Sirianni M.Nota A.Tosi M.Gallagher J.Meixner M.,Oey M.S.Walterbos R.Pasquali A.Smith L.J.Angeretti L.2009-05-17T09:18:54Z2009-05-17T09:12:20ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsopen-star-clustershst-photometryIn the quest to understand how star formation occurs and propagates in the low-metallicity environment of the Small Magellanic Cloud (SMC), we acquired deep F555W (~V) and F814W (~I) Hubble Space Telescope ACS images of the young and massive star-forming region NGC 346. These images and their photometric analysis provide us with a snapshot of the star formation history of the region. We find evidence for star formation extending from ~10Gyr in the past until ~150Myr in the field of the SMC. The youngest stellar population (~3+/-1Myr) is associated with the NGC 346 cluster. It includes a rich component of low-mass pre-main-sequence stars mainly concentrated in a number of subclusters spatially colocated with CO clumps previously detected by Rubio and coworkers. Within our analysis uncertainties, these subclusters appear coeval with each other.2007AJ....133...44Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/133/44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/PASP/98/1133 : The open cluster NGC 346 (Niemela+, 1986)J/AJ/98/1305 : Stellar content of NGC 346 (Massey+, 1989)J/A+A/436/687 : SMC NGC 346-11 and AV 304 spectra (Hunter+, 2005)J/ApJS/166/549 : HST/ACS observations of NGC 346 (Gouliermis+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/133/44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/133/44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/133/44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/133/44https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/133/44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/133/44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/133/44/table2 (Photometric catalog of the NGC 346 region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/44/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/44/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/44/table2?GETtext/xml+votable180.050000true14.86075417-72.164722220.005555555555555556Cone search capability for table J/AJ/133/44/table3 (Main characteristics of the NGC 346 subclusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/44/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/44/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/44/table3?GETtext/xml+votable180.050000true14.771667-72.1744440.0055555555555555566/33317 33328https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/133/44?format=asciiOpticaldefaultJ/AJ/133/44/table2Photometric catalog of the NGC 346 regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDRunning identification number (1)meta.id;meta.mainintF555WThe F555W filter magnitudemagphot.mag;em.opt.Vfloate_F555WThe 1{sigma} uncertainty in F555Wmagstat.errorfloatF814WThe F814W filter magnitudemagphot.mag;em.opt.Ifloate_F814WThe 1{sigma} uncertainty in F814Wmagstat.errorfloatRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainindexedMPG? Massey et al. (1989, Cat. J/AJ/98/1305) identification, Cl* NGC 346 MPG NNN in Simbadmeta.idintnullableJ/AJ/133/44/table3Main characteristics of the NGC 346 subclustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[SSN2007]Subcluster designation (Sc NN)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainRadRadius of subclusterpcphys.size.radiusfloatAgeAge of subclusterMyrtime.ageinte_Agerms uncertainty on AgeMyrstat.error;time.agefloatNpmsTotal number of pre-main sequence (PMS) starsmeta.numberintDpmsPMS number density (NPMS/pc^2^)pc**-2meta.idfloat