J/other/NewAR/90ivo://CDS.VizieR/J/other/NewAR/90.1549CDSWright N.J.2022-05-31T13:02:30Z2021-06-08T13:28:25ZCDS support team

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

cds-question@unistra.frstellar-associationsob-starsopen-star-clustersOB associations are unbound groups of young stars made prominent by their bright OB members, and have long been thought to be the expanded remnants of dense star clusters. They have been important in astrophysics for over a century thanks to their luminous massive stars, though their low-mass members have not been well studied until the last couple of decades. This has changed thanks to data from X-ray observations, spectroscopic surveys and astrometry from Gaia that allows their full stellar content to be identified and their dynamics to be studied, which in turn is leading to changes in our understanding of these systems and their origins, with the old picture of Blaauw (1964a) now being superseded. It is clear now that OB associations have considerably more substructure than once envisioned, both spatially, kinematically and temporally. These changes have implications for the star formation process, the formation and evolution of planetary systems, and the build-up of stellar populations across galaxies.2020NewAR..9001549Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NewAR/90.1549CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NewAR/90.1549https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NewAR/90.1549http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NewAR/90.1549https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/NewAR/90.1549https://vizier.iucaa.in/viz-bin/votable?-source=J/other/NewAR/90.1549http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/NewAR/90.1549GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/NewAR/90.1549/table1 (Census of known OB associations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/NewAR/90.1549/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/NewAR/90.1549/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/NewAR/90.1549/table1?GETtext/xml+votable180.050000true285.3893.61240.0055555555555555566/1157 1287 1299 1545 2909 3031 3059 3062 3137 3198 3257 3308 3331 3632 3723 3755 13535 13960 14264 14267 14280 14289 14301 14311 14358 14436 14448 14630 14641 14647 14655 14692 15371 15384 15651 15683 20755 21430 21438 21647 22038 22249 22862 22906 23644 23739 23983 28828 28916 29089 29095 29162 29456 29461 29512 29532 30417 37882 37900 37926 38018 39216 39251 39386 39798 39804 41662 41738 41813 42224 42394 42483 42650 43148 44353 47828https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/NewAR/90.1549?format=asciidefaultJ/other/NewAR/90.1549/table1Census of known OB associationsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of OB association as per Ruprecht (1966, IAU Trans,, 12, 348)meta.id;meta.maincharCode[ABC] Reliability of the association's existence (1)meta.code.qualcharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latDistDistancepcpos.distanceinte_Dist? Uncertainty on the distance (2)pcstat.errorintnullabler_DistReference for the distancemeta.ref;pos.framecharl_AgeLimit flag on Agemeta.code.error;time.agecharAge? AgeMyrtime.agefloatnullablee_Age? Uncertainty on the age (2)Myrstat.error;time.agefloatnullabler_AgeReference for the agemeta.ref;pos.framecharClusterList of young or open clusters part of the associationmeta.id.assoccharNebulaeList of nebulae that are part of the associationmeta.id.assocchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed