J/MNRAS/424/1925ivo://CDS.VizieR/J/MNRAS/424/1925doi:10.26093/cds/vizier.74241925CDSChini R.Hoffmeister V.H.Nasseri A.Stahl O.Zinnecker H.2024-07-18T20:18:46Z2013-08-12T13:46:20ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starso-starsmorgan-keenan-classificationThe formation of stars above about 20M_{sun}_ and their apparently high multiplicity remain heavily debated subjects in astrophysics. We have performed a vast high-resolution radial velocity spectroscopic survey of about 250 O- and 540 B-type stars in the southern Milky Way which indicates that the majority of stars (>82%) with masses above 16M_{sun}_ form close binary systems while this fraction rapidly drops to 20% for stars of 3M_{sun}_. The binary fractions of O-type stars among different environment classes are: clusters (72+/-13%), associations (73+/-8%), field (43+/-13%) and runaways (69+/-11%). The high frequency of close pairs with components of similar mass argues in favour of a multiplicity originating from the formation process rather than from a tidal capture in a dense cluster. The high binary frequency of runaway O stars that we found in our survey (69% compared to 19-26% in previous surveys) points to the importance of ejection from young star clusters and thus supports the competitive accretion scenario.2012MNRAS.424.1925Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/424/1925CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)V/116 : Galactic O star catalog (Maiz-apellaniz+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/424/1925https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/424/1925http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/424/1925https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/424/1925https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/424/1925http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/424/1925GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/424/1925/table1 (Spectroscopic results for 248 O- and 581 B-type stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/424/1925/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/424/1925/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/424/1925/table1?GETtext/xml+votable180.050000true83.0016592-0.29907920.0055555555555555566/26 63 89-90 161 174 236 257 351 418 435 455 461 463 472 474 496 592 649 1038 1040 4206 4473 4755 8772 12415 12451 12472 12659 12729 12865 12932 12943 12961 12971-12972 12981 12988 12991 13001 14346 14353 14368 16990 17158 17194 17254 17322 17754 18455 18560 18856 18915 18928 19017 19202 19245 19287 19309 19402 19513 19525 19567 19651 19676 19757 20012 20523 20536 20546 20551 20581 20609 20613 20862 21004 21139 21196 21229 21236 21241 21271 21362 21432 21436 21438-21439 21479 21635 21638 21641 21646-21647 21655-21656 21939 22033 22039 22088 22183 22208 22211 22216 22223 22240 22243 22246 22249 22253 22258 22264 22269 22334 22357 22410 22466 22517 22805 22822 22837 22845 22854 22859-22862 22884 22888-22889 22892 22895 22907 22938 22951 22958 22966 22981 22992 22994 23005 23007 23010 23081 23237 23255 23281 23284 23298 23358 23360 23390 23394 23427 23442 23451 23463 23483 23493 23581 23621 23637 23644 23669 23714 23717 23763-23764 23769 23774-23776 23780 23851 23860 23944 23962-23963 23978-23979 23982 23998 24085 24105 24132 24139 24152 24160 24174 24178-24179 24183 24186 24238 24277 24338 24633 24791 24969 25015-25016 25487 25659 25939 26057 26754 26855 26867 26879 27102 27322 27402 27498 27574 27578 28233 28687 28737 28796 28809 28833 28865 28890-28892 28900 28913 28915-28916 28940 28944 29025 29036 29084 29086 29089 29091 29095 29098 29115 29158 29190 29331 29463 29505 29513 29515 29519 29525 29530 29537 29582 29600 29809 29866 30014 30114 30216 30229 30325 30403 30476-30477 30492 30540 30576 30643 30675 30693 30697 30709 30818 30970 31056 31121 31169 31511 31537 31600 31705 31716 31748 31756 31759 31790 32043 32095 32102 32149 32174 32189 32364 32513 32852 33108 33226 33361 33408 33417 34526 34607 34823 34896 34914 35077 35095 35676 36121 36240 36851 36940 37012 37028 37099 37105 37120 37169 37173 37183 37186 37212 37214 37231 37236 37245-37246 37248 37253 37265 37268 37311 37330 37333-37334 37339 37345 37360 37421 37452 37487 37496 37536 37584 37624 37629 37639 37655 37662-37663 37669 37676-37677 37682 37685 37688 37696 37714 37716-37717 37732 37746 37750 37754 37764 37768 37774 37776-37777 37787 37790 37816 37824 37826 37833 37849 37851 37858 37861 37863-37865 37869-37870 37888-37889 37893-37894 37897 37899-37901 37903 37905 37907 37912 37919 37922-37923 37926-37928 37930-37932 37934 37938 37946 37948 37957 37969 37978 37990 38016 38018 38020-38022 38024 38028 38049 38066 38074 38285 38401 38410 38440 38655 38918 38996 39023 39075 39088 39141 39168 39170 39187 39189 39194 39201-39202 39209 39238 39248-39249 39252 39254 39264 39281 39297 39327 39374 39386 39628 39707 39793 39804 39876 39907 39916 39930 39971 40093 40239 40548 40943 40975 41071 41122 41213 41277 41312 41374 41385 41407 41441 41459 41464 41472 41516 41520 41534 41556 41562 41592 41595 41598-41599 41606-41607 41610 41615 41630 41632 41637 41641 41651 41653 41655 41671-41673 41675 41685-41686 41689 41692 41698 41702 41705 41707 41709 41715 41740 41747 41750 41757 41769 41787 41813 41815 41858 41866-41867 41889 41903 41916-41917 41939 41943 41947 41963 41973 42010 42036 42040 42059 42064 42080 42116 42173 42190 42203 42206 42213-42214 42218 42220-42221 42226 42228 42236 42273 42283 42287 42300 42303 42377 42383 42394 42398 42405 42407-42408 42416-42417 42421 42438 42456 42458 42462 42464 42470-42471 42483 42495 42560 42655 42684 42714 42719 42736 42738 42740 42746 42764 42875 42932 42948 42959 42994 43011 43014 43018 43033 43035-43036 43038 43040-43041 43056 43062 43067 43072 43086 43088 43095 43097 43099 43101 43115 43117 43119 43137-43138 43140 43144 43153 43165 43183 43206 43210-43211 43224 43229 43238 43259 43272 43279 43286 43294 43308 43338 43345 43365 43377 43383 43521 43530-43531 43702 43720 43764 43843 44043 44054 44086 44316-44317 44344 44352 44359-44360 44386 44584 44892 44903 44993 45505 45654 45809 45964 46081 46459 46615 46802 46835 47117 47121 47246 47263 47353 47477 47622 47648 47672 47703 47825 48021 48088 48856 48884https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/424/1925?format=asciiOpticaldefaultJ/MNRAS/424/1925/table1Spectroscopic results for 248 O- and 581 B-type starsNameStar Namemeta.id;meta.maincharSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpTypeMK spectral typesrc.spTypecharNoNumber of spectrameta.numberintMult[C SB12 U] Binarity status: Constant, Spectroscopic Binary or Unknown (1)meta.code.multipchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main