J/A+A/665/A150ivo://CDS.VizieR/J/A+A/665/A150doi:10.26093/cds/vizier.36650150CDSHolgado G.Simon-Diaz S.Herrero A.Barba R.H.2023-07-03T13:24:37Z2022-09-23T08:03:40ZCDS support team

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

cds-question@unistra.frearly-type-starso-starsspectroscopyStellar rotation is of key importance for the formation process, evolution, and final fate of massive stars. Performing a reassessment of the empirical rotational properties of Galactic massive O-type stars using the results from a detailed analysis of ground-based multi-epoch optical spectra obtained in the framework of the IACOB & OWN surveys. Using high-quality optical spectroscopy we establish the velocity distribution for a sample of 285 apparently single and single line spectroscopic binary (SB1) Galactic O-type stars. We also make use of the rest of the parameters from the quantitative spectroscopic analysis presented in prior IACOB papers (mainly Teff, gravity, and multiplicity) to study the vsini behavior and evolution from the comparison of subsamples in different regions of the spectroscopic HR diagram. Our results are compared to the main predictions -- regarding current and initial rotational velocities -- of two sets of well-established evolutionary models for single stars, as well as from population synthesis simulations of massive stars including binary interaction. We reassess the known bimodal nature of the vsini distribution, and find a non negligible difference between the vsini distribution of single and SB1 stars. We provide empirical evidence supporting the proposed scenario that the tail of fast rotators is mainly produced by binary interactions. Stars with extreme rotation (>300km/s) appear as single stars and located in the lower zone of the sHR. We notice little rotational braking during the main sequence, in addition to being independent of mass (and wind strength). The rotation rates of the youngest observed stars lean to an empirical initial velocity distribution with <20% of critical velocity. Lastly, there seems to persist a limit in vsini detection below 40-50km/s, especially in the upper part of the sHRD, possibly associated with the effect of microturbulence in the measurement methodology used.2022A&A...665A.150Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/665/A150CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/562/A135 : Northern Galactic OB stars vsini (Simon-Diaz+, 2014)J/A+A/597/A22 : Massive O- and B-type stars velocities (Simon-Diaz+, 2017)J/A+A/613/A65 : Spectroscopic parameters of O-type stars (Holgado+, 2018)J/A+A/613/A9 : Extinction towards Galactic O stars (Maiz Apellaniz+, 2018)J/A+A/638/A157 : O-type stars near ZAMS elusive detection (Holgado+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/665/A150https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/665/A150http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/665/A150https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/665/A150https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/665/A150http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/665/A150GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/665/A150/tablef1 (O-type stars considered in this work with rotational parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A150/tablef1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A150/tablef1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A150/tablef1?GETtext/xml+votable180.050000true160.9894264-59.5475750.0055555555555555565/3661 6/1287 1293 1299 1303 1332 1355 1558 1790 1946 2409 3011 3037 3051 3054 3231 3245 3247 3249 3256 3261 3263 3272 3301 3307 3315 3331 3337 3430 3585 3600 3622 3644 3649 3653 3724 5506 6891 12943 13255 13557 13999 14008 14179 14240 14253 14263 14283 14295 14311 14353 14359 14456 14624 14630 14633 14636 14643 14654 14658 14692-14693 14712 14740-14741 14743 14745 14793 14824 15369 15476 15577 15631 15656 15663 15670 15672 15682-15683 15745 20613 21432 21635 21638 21655-21656 22033 22088 22211 22216 22240 22243 22249 22253 22854 22884 23637 23717 23774 23962 23982 24179 24555 28687 28796 28809 28865 28890-28891 28900 28913 28915 29025 29036 29089 29091 29095 29098 29115 29158 29162 29463 29504 29513 29515 29517 29525 29530 29600 29866 30216 30818 31748 37245 37333-37334 37339 37750 37833 37861 37863 37870 37897 37899-37901 37907 37915 37923 37926 37930-37932 37934 37938 37948 38016 38020 38022 38024 38026 38074 39238 39248 39252 39264 39281 39374 39386 39804 39971 41103 41592 41610 41630 41653 41673 41675 41685-41686 41702 41715 41750 41769 41787 41813 41903 42206 42226 42228 42236 42283 42287 42303 42383 42390 42394 42398 42405 42416-42417 42456 42458 42470-42471 42483 42764 43034 43041 43062 43144https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/665/A150?format=asciidefaultJ/A+A/665/A150/tablef1O-type stars considered in this work with rotational parametersTargetStar namemeta.id;meta.maincharvmacro? Extra-broadening velocitykm/sphys.veloc.microTurbintnullableNepochsNumber of epochs availablemeta.numberintsubsample[abc] Flag ID for subsample clusteringmeta.codecharNotesMulti-epoch notesmeta.notecharSimbadNameSimbad column added by the CDSmeta.idcharnullable_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.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpTypeSpectral typesrc.spTypecharLumClassLuminosity classsrc.class.luminositycharl_TeffLimit flag on Teffmeta.code.error;phys.temperature.effectivecharTeffEffective temperaturekKphys.temperature.effectivefloatl_loggtLimit flag on loggtmeta.code.errorcharloggtGravity corrected from rotational effectslog(cm.s**-2)phys.gravityfloatl_logLspLimit flag on logLspmeta.code.errorcharlogLspLsp parameter (1)log(solLum)phys.luminosityfloatLineLine for analysismeta.id;spect.linecharvsiniprojected rotational velocitykm/sphys.veloc.rotatint