J/AJ/117/354ivo://CDS.VizieR/J/AJ/117/354doi:10.26093/cds/vizier.51170354CDSDe Zeeuw P.T.Hoogerwerf R.De Bruijne J.H.J.Brown A.G.A.Blaauw A.2023-04-06T16:50:33Z2007-12-31T22:51:46ZCDS support team

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

cds-question@unistra.frstellar-associationsob-starsA comprehensive census of the stellar content of the OB associations within 1 kpc from the Sun is presented, based on Hipparcos positions, proper motions, and parallaxes. It is a key part of a long-term project to study the formation, structure, and evolution of nearby young stellar groups and related star-forming regions. OB associations are unbound "moving groups", which can be detected kinematically because of their small internal velocity dispersion. The nearby associations have a large extent on the sky, which traditionally has limited astrometric membership determination to bright stars (V~<6mag), with spectral types earlier than ~B5. The Hipparcos measurements allow a major improvement in this situation. Moving groups are identified in the Hipparcos Catalog by combining de Bruijne's (1999MNRAS.306..394H) refurbished convergent point method with the "Spaghetti method" of Hoogerwerf & Aguilar (1999, MNRAS, in press). Astrometric members are listed for 12 young stellar groups, out to a distance of ~650pc. These are the three subgroups Upper Scorpius, Upper Centaurus Lupus, and Lower Centaurus Crux of Sco OB2, as well as Vel OB2, Tr 10, Col 121, Per OB2, {alpha} Persei (Per OB3), Cas-Tau, Lac OB1, Cep OB2, and a new group in Cepheus, designated as Cep OB6.1999AJ....117..354Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/117/354CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/117/354https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/117/354http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/117/354https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/117/354https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/117/354http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/117/354GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/117/354/tablec1 (Membership list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/117/354/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/117/354/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/117/354/tablec1?GETtext/xml+votable180.050000true233.04305528-21.966823330.0055555555555555565/442 784 786 3432 3563 3869 3918 9801 9804 9966 10882 11089 6/236 263 351 435 483 501 509 511 649 844 851-852 856 881 965 991 1013 1044 1082 1194 1197-1199 1203-1204 1207-1210 1212 1270-1271 1293 1430 1441 1464 1536 1539-1540 1543-1544 1549-1550 1554 1560 1566 1586 1624 1628 1638 1647 1673-1674 1677 1691 1697 1706 1708 1720 1725 1727-1728 1731 1735 1737-1738 1748-1749 1763-1764 1772 1780 1826 1923 1991 2279 2380 2515 2527 2533 2537-2538 2556 2755 2775 2833 2864 2873 2880 2884 2903 2970 2976 3027 3044-3045 3073 3077 3088 3091 3093 3095 3097 3100-3101 3103 3107 3111 3115-3116 3120 3127 3165 3168 3173 3220 3253 3263 3491 3507 3637 3668 3697 3719 3750 3842 13434 13534-13535 13553-13554 13556-13557 13559 13561 13566-13567 13605 13617 13621 13625 13634 13677 13682 13703 13706 13708 13722-13724 13736 13738 13742 13744-13746 13748-13749 13757-13758 13775 13778 13784 13792 13794-13795 13802 13899 13907 13910 13917 13944 13983 14038 14041 14045 14073 14075 14081-14082 14085 14088 14090-14091 14094 14096-14098 14109-14110 14112-14113 14115-14116 14120-14121 14123 14131-14132 14136 14145 14154 14219 14224 14246-14247 14249 14251 14257 14262-14264 14266 14268 14271-14272 14304-14305 14312 14314 15446 15452 15463 15474 15480-15481 15484 15486-15487 15557 15565-15566 15568-15569 15572-15573 15576 15603 15605 15611 15616 15618 15622 15628 15633-15635 15637 15644 15659-15660 15662 15667 15744-15745 15747-15750 15757-15758 15762 15764 15770 15789 20458 20738 20745 20748-20749 20753 20756-20757 20759-20761 20764 20767 20769 20782 20789 20793 20795 20804 20809-20810 20814 20817-20819 20824 20832-20834 20841 20846 20850 20858 20862 20887 22160 22560 22638 22769 22827 22829 22920 23237 23281 23297-23298 23329 23345 23418 23430 23442 23451 23464 23591 23765 23769 24092-24093 24138 24157 24159-24160 24278 24449 24489 24504 24570 29229 29231 29320 29348 29358 30722 37149 37175 37177 37186-37187 37197 37237 37242 37268 37270 37314 37627 37799 37814 37817 37819 37823 37849 37851 37865 37868-37869 37881 37883-37884 37887-37888 37900 37905 37928 37953 37968 37972-37974 37977-37978 37980 37990 38145 38151 38155 38157 38162 38171 38181 38212 38215 38255 38272 38996 39006 39033 39123 39127-39128 39164 39174 39177 39179 39181 39183 39187 39189-39191 39193-39197 39201 39209 39212-39213 39215 39220 39223-39225 39227 39229-39230 39234 39238 39241 39243-39244 39248 39251 39254 39256 39258-39259 39262 39264 39280 39296-39297 39299-39300 39310-39312 39314 39316 39319-39320 39322-39323 39329 39331 39333 39363 39679 39818 39822 39827-39828 39832-39833 39838 39845-39846 39853 39857 39860 39868 39871 39873 39876 39878 39880-39881 39883 39896 39899 39904 39907 39913 39916 39918 39928 39931 41513 41534 41568 41606-41607 41618 41625 41632-41634 41637 41641 41643 41646 41650 41652 41657 41661 41677 41683 41704-41705 41707 41710-41711 41726 41783 41824 41826 41847 41866 41869 41880 41897 41900 41906 41915 41917 41937 41946-41947 41963 41971 41973 41983 42173-42174 42218 42220 42233 42237 42382 42399-42400 42406-42407 42412 42414 42419 42424-42425 42428-42429 42465-42466 42509 42521 42548-42549 42559 42563 42571 42584-42585 42600 42604-42605 42610 42612-42613 42617-42620 42622-42623 42628 42633 42635 42640 42645 42649 42651-42654 42656 42658 42660 42670 42672 42674 42677-42678 42684-42685 42687-42688 42692 42694 42697-42698 42701 42707-42708 42711 42714-42715 42725 42727-42728 42730 42734 42736 42738-42739 42742 42746 42749 42754 42757-42758 42763 42782 42789 42808 42849 42857-42858 42873 42876 42885-42886 42896 42903 42910-42911 42913 42916-42917 42923-42924 42929 42932 42939-42941 42943 42948 42953 42955-42956 42959-42960 42964 42972 42976-42978 42980 42982 42984-42985 42987 42989-42991 42994 43002 43011-43012 43014 43017 43019 43021 43029 43032 43037-43038 43048 43054-43055 43057 43059 43062 43065 43067 43072-43073 43086 43093-43094 43097 43103-43104 43111 43115 43117 43124 43127 43129-43130 43133 43136-43137 43139-43140 43147 43149-43150 43153-43154 43157 43160-43161 43165-43166 43168-43169 43177 43182-43183 43188-43189 43192 43194 43196-43197 43201-43202 43205-43206 43208 43210-43211 43214 43224-43225 43228-43230 43232 43238 43244 43246 43255-43256 43259 43272 43274 43276-43277 43285 43287 43292-43293 43298 43301 43323 43326 43331-43333 43337-43339 43342 43345 43349 43352 43355 43358 43360-43361 43364 43367 43369 43372 43375 43377-43378 43383 43397 43400 43402-43403 43407 43414 43416 43423 43425 43429 43435 43442 43457-43458 43460 43468 43488-43489 43492 43522-43523 43527 43532 43538 43540-43541 43557-43559 43564 43569 44033 44036-44037 44043-44044 44046 44052 44054-44055 44059 44067-44069 44073 44076 44078 44081 44088 44093 44096 44098 44101 44106 44114 44119 44132 44136 44139 44146 44156 44162 44293 44305-44308 44310 44312-44313 44316 44318-44319 44321 44341 44352-44354 44360-44361 44363 44365-44366 44368 44371 44376 44378 44384-44385 44389 44393 44400 44403 44409 44421 44434 44436 44502 44509https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/117/354?format=asciiOpticaldefaultJ/AJ/117/354/tablec1Membership listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOBAss[A-L] OB association code (1)meta.id.parentcharType[el] e: early-type, l: late-typesrc.spTypecharHIPHIP (Cat. I/239) numbermeta.idintMembMembership probability%statintSimbadSimbad column added by the CDSchar_RASimbad column added by the CDSdegpos.eq.ra;meta.main_DESimbad column added by the CDSdegpos.eq.dec;meta.main