J/AJ/144/130ivo://CDS.VizieR/J/AJ/144/130doi:10.26093/cds/vizier.51440130CDSBraganca G.A.Daflon S.Cunha K.Bensby T.Oey M.S.Walth G.2018-01-04T08:23:09Z2013-11-25T12:25:45ZCDS support team

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

cds-question@unistra.frearly-type-starsstellar-spectral-typesb-starsmultiple-starsProjected rotational velocities (vsini) are presented for a sample of 350 early B-type main-sequence stars in the nearby Galactic disk. The stars are located within ~1.5kpc from the Sun, and the great majority within 700pc. The analysis is based on high-resolution spectra obtained with the MIKE spectrograph on the Magellan Clay 6.5m telescope at the Las Campanas Observatory in Chile. Spectral types were estimated based on relative intensities of some key line absorption ratios and comparisons to synthetic spectra. Effective temperatures were estimated from the reddening-free Q index, and projected rotational velocities were then determined via interpolation on a published grid that correlates the synthetic FWHM of the He_I_ lines at 4026, 4388 and 4471{AA} with vsini. As the sample has been selected solely on the basis of spectral types, it contains a selection of B stars in the field, in clusters, and in OB associations. The vsini distribution obtained for the entire sample is found to be essentially flat for vsini values between 0 and 150km/s, with only a modest peak at low projected rotational velocities. Considering subsamples of stars, there appears to be a gradation in the vsini distribution with the field stars presenting a larger fraction of the slow rotators and the cluster stars distribution showing an excess of stars with vsini between 70 and 130km/s. Furthermore, for a subsample of potential runaway stars we find that the vsini distribution resembles the distribution seen in denser environments, which could suggest that these runaway stars have been subject to dynamical ejection mechanisms.2012AJ....144..130Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/130CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/244 : Catalog of Stellar Rotational Velocities (Glebocki+ 2005)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)III/195 : Atlas of Optical Spectral Classification OB Stars (Walborn+ 1990)J/MNRAS/410/190 : Young runaway stars within 3kpc (Tetzlaff+, 2011)J/ApJ/722/605 : A stellar rotation census of B stars (Huang+, 2010)J/MNRAS/392/448 : Rotational velocities of early-type binaries (Howe+, 2009)J/MNRAS/389/869 : Multiplicity among bright stellar systems (Eggleton+, 2008)J/AJ/133/1092 : vsini of B0-B3 stars in 7 young clusters (Wolff+, 2007)J/AJ/134/1570 : Rotational velocities of OB stars (Daflon+, 2007)J/ApJ/648/580 : Rotational velocities in 19 open clusters (Huang+, 2006)J/A+A/444/941 : Effective temperature of B stars (Paunzen+, 2005)J/ApJ/616/562 : Rotational velocities in binaries (Abt+, 2004)J/ApJ/573/359 : Rotational velocities of B stars from BSC (Abt+, 2002)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)J/A+A/345/471 : Memberships of open clusters (Robichon+, 1999)J/MNRAS/284/265 : Rotational velocities of 373 OB stars (Howarth+ 1997)J/A+A/289/101 : Orion OB1 association. I. (Brown+, 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/144/130https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/130http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/144/130https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/144/130https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/144/130http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/144/130GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/144/130/table1 (Binary/multiple Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/130/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/130/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/130/table1?GETtext/xml+votable180.050000true56.4185156.04999310.005555555555555556Cone search capability for table J/AJ/144/130/table2 (vsini results for the entire sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/130/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/130/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/130/table2?GETtext/xml+votable180.050000true48.0640783-20.61959190.0055555555555555566/257 12865 20535 20546 20551 20560 20605 20738 20741 20753 20756 20761 20764 20766 20767 20769 20785 20786 20793 20794 20800 20811 20819 20824 20833 20834 20836 20869 20896 20900 20923 20968 21061 21190 21227 21303 21313 21428 21430 21432 21435 21439 21456 21465 21521 21556 21567 21636 21641 21644 21646 21655 21658 21664 21670 21711 21798 21997 22033 22039 22058 22059 22088 22125 22207 22243 22249 22645 22836 22858 22860 22861 22862 22880 22881 22888 22893 22898 22904 22907 22994 22995 23255 23281 23298 23349 23637 23647 23648 23660 23682 23738 23749 23764 23769 23800 24085 25993 26929 27190 28706 28707 28807 28817 29040 29149 29445 29488 29522 29579 29783 29838 29876 30246 30316 30356 30440 30573 30629 31103 31121 31790 31853 31854 32052 32108 33937 34065 36196 36240 36257 36282 36964 37078 37145 37224 37225 37228 37231 37241 37243 37254 37276 37311 37327 37333 37487 37629 37684 37705 37714 37716 37733 37766 37800 37809 37816 37826 37849 37851 37864 37865 37870 37883 37886 37889 37893 37894 37905 37914 37918 37921 37923 37938 38029 38037 38051 38077 38082 38419 38424 38925 38935 38992 38995 39025 39041 39109 39130 39180 39187 39194 39214 39215 39216 39217 39224 39238 39240 39243 39248 39254 39259 39261 39267 39289 39297 39306 39323 39334 39347 39350 39351 39355 39360 39366 39369 39372 39375 39380 39388 39394 39402 39420 39486 39536 39541 39618 39671 39675 39685 39689 39695 39696 39715 39720 39730 39748 39782 39796 39820 39823 39832 39840 39841 39857 39860 39864 39866 39871 39877 39882 39886 39896 39907 39916 39917 39930 39948 39982 40122 40144 40495 40584 40591 40598 40623 40651 40659 41150 41180 41213 41379 41429 41547 41567 41586 41594 41607 41631 41684 41693 41705 41717 41747 41752 41893 41911 41944 41973 42192 42237 42407 42483 42488 42549 42687 42791 42830 42932 42948 42959 42994 43011 43023 43041 43061 43067 43083 43175 43310 43414 43521 44086 44316 44366 44385 44386 44389 44393 44469 44822 45229 45638 47148 47536 47637 47824 47845 48749https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/144/130?format=asciiOpticaldefaultJ/AJ/144/130/table1Binary/multiple StarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIP[17563/100881] HIPPARCOS numbermeta.id;meta.mainintSpTSpectral type from SIMBADsrc.spTypecharu_MultFlag on m_HIP (? or :)meta.code.errorcharMultMultiplicity flag on HIP: asym = the star has an asymetric line profile; SB = spectroscopic binarymeta.code.error;spect.line.profile;spect.linecharr_MultReference (1)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/AJ/144/130/table2vsini results for the entire sampleFWHM1[0.9/8]? HeI 4026{AA} FWHM; in {AA}0.1nmspect.line.width;spect.linefloatnullableFWHM2[0.7/8.9]? HeI 4388{AA} FWHM; in {AA}0.1nmspect.line.width;spect.linefloatnullableFWHM3[0.7/8.8]? HeI 4471{AA} FWHM; in {AA}0.1nmspect.line.widthfloatnullablevsini1? HeI 4026{AA} projected rotational velocitykm/sphys.veloc.rotatintnullablevsini2? HeI 4388{AA} projected rotational velocitykm/sphys.veloc.rotatintnullablevsini3? HeI 4471{AA} projected rotational velocitykm/sphys.veloc.rotatintnullable<vsini>? Mean projected rotational velocitykm/sphys.veloc.rotatintnullablee_<vsini>? Standard deviation in <vsini> between the available measureskm/sstat.error;phys.veloc.rotatintnullableNNumber of HeI lines usedmeta.numberintM[ACR.? ] Membership classification (A=association, C=cluster, R=runaway star)meta.code.membercharSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainQValue of the classical reddening free parameter Q (1)phot.color.reddFreefloatTeff[14610/35300] Effective temperature (2)Kphys.temperature.effectiveintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIP[14898/101909] HIPPARCOS numbermeta.id;meta.mainintSpTSpectral typesrc.spTypecharVmag[2.81/10.68]? Apparent V band magnitudemagphot.mag;em.opt.Vfloatnullable