J/ApJS/215/15ivo://CDS.VizieR/J/ApJS/215/15doi:10.26093/cds/vizier.22150015CDSSana H.Le Bouquin J.-B.Lacour S.Berger J.-P.Duvert G.Gauchet L.,Norris B.Olofsson J.Pickel D.Zins G.Absil O.de Koter A.,Kratter K.Schnurr O.Zinnecker H.2017-07-10T06:21:45Z2015-01-21T12:53:22ZCDS support team

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

cds-question@unistra.frmultiple-starso-starssurveysinfrared-photometryinterferometryMultiplicity is one of the most fundamental observable properties of massive O-type stars and offers a promising way to discriminate between massive star formation theories. Nevertheless, companions at separations between 1 and 100 milliarcsec (mas) remain mostly unknown due to intrinsic observational limitations. At a typical distance of 2kpc, this corresponds to projected physical separations of 2-200AU. The Southern MAssive Stars at High angular resolution survey (SMaSH+) was designed to fill this gap by providing the first systematic interferometric survey of Galactic massive stars. We observed 117 O-type stars with VLTI/PIONIER and 162 O-type stars with NACO/Sparse Aperture Masking (SAM), probing the separation ranges 1-45 and 30-250mas and brightness contrasts of {Delta}H<4 and {Delta}H<5, respectively. Taking advantage of NACO's field of view, we further uniformly searched for visual companions in an 8" radius down to {Delta}H=8. This paper describes observations and data analysis, reports the discovery of almost 200 new companions in the separation range from 1mas to 8" and presents a catalog of detections, including the first resolved measurements of over a dozen known long-period spectroscopic binaries. Excluding known runaway stars for which no companions are detected, 96 objects in our main sample ({delta}<0{deg}; H<7.5) were observed both with PIONIER and NACO/SAM. The fraction of these stars with at least one resolved companion within 200mas is 0.53. Accounting for known but unresolved spectroscopic or eclipsing companions, the multiplicity fraction at separation {rho}<8" increases to f_m_=0.91+/-0.03. The nine non-thermal radio emitters observed by SMaSH+ are all resolved, including the newly discovered pairs HD 168112 and CPD-47{deg}2963.2014ApJS..215...15Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/215/15CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)III/274 : Galactic O-Star Spectroscopic Survey (Sota+, 2014)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)III/154 : Radial Velocities along Southern Galactic Equator (Denoyelle 1987)J/AJ/148/114 : Radial velocity curve of {delta} Cir (Mayer+, 2014)J/A+A/557/A13 : 3 eclipsing high-mass binaries LC (Barr Dominguez+, 2013)J/A+A/550/A107 : RV catalogue of O stars in 30 Doradus (Sana+, 2013)J/A+A/542/A95 : 9 Sgr spectra 1999-2011 (Rauw+, 2012)J/other/Sci/337.444 : RV curves of Galactic massive O stars (Sana+, 2012)J/MNRAS/424/1925 : Spectrocopic Binarity of O and B type stars (Chini+, 2012)J/MNRAS/416/817 : RV cat. of O-type stars in IC 2944 and Cen OB2 (Sana+, 2011)J/AJ/142/146 : RVs of Galactic O-type stars I. (Williams+, 2011)J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)J/AN/331/349 : O, B-type + red supergiant luminosities (Hohle+, 2010)J/A+A/518/A1 : Galactic massive stars with AstraLux (Maiz Apellaniz, 2010)J/A+A/515/A26 : H and Ks photometry of Trumpler 14 (Sana+, 2010)J/A+A/502/937 : Radial velocities of 9 O-type stars (Mahy+, 2009)J/A+A/501/291 : Spectroscopic observations of HD 152219 (Sana, 2009)J/AJ/137/3358 : Speckle interferometry of massive stars (Mason+, 2009)J/MNRAS/400/1479 : RV catalogue of O-type stars in NGC 6611 (Sana+, 2009)J/MNRAS/386/447 : RV catalogue of O-type stars in NGC 6231 (Sana+, 2008)J/A+A/457/637 : UBVJHK synthetic phot. of Galactic O stars (Martins+, 2006)J/A+A/454/1047 : XMM view of NGC 6231 open cluster (Sana+, 2006)J/other/IBVS/5480 : Elements for 80 eclipsing binaries (Otero, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/215/15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/215/15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/215/15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/215/15https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/215/15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/215/15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/215/15/smash (SMaSH+ main, runaway and supplementary target list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/215/15/smash?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/215/15/smash?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/215/15/smash?GETtext/xml+votable180.050000true105.08782083-5.826652780.0055555555555555566/21635 21638 21647 21655 21656 21665 22033 22088 22211 22216 22240 22243 22249 22253 22258 22517 23637 28687 28809 28833 28890 28891 28892 28900 28913 28915 28916 29025 29036 29089 29091 29095 29098 29115 29158 29190 29463 29505 29513 29515 29525 29530 29537 29600 30818 37212 37245 37333 37833 37861 37863 37870 37896 37897 37900 37901 37926 37930 37931 37948 38016 38018 38024 39238 39248 39252 39254 39264 39281 39327 39374 39907 39916 39922 39971 41595 41598 41599 41610 41630 41653 41655 41671 41673 41685 41698 41747 41750 42203 42206 42213 42214 42226 42236 42283 42303 42377 42383 42394 42398 42405 42407 42408 42416 42417 42421 42438 42456 42458 42462 42464 42470 42471 42483 42764 43024 43042 430628.650015785639275e-20 1.2918781580533825e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/215/15?format=asciiInfrareddefaultJ/ApJS/215/15/compSMaSH+ companion detections with PIONIER (PIO), NACO/SAM (SAM) and NACO FOV (NACO)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget namemeta.id;meta.maincharPairPair componentsmeta.code.multipcharInstInstrument (PIO=VLTI/PIONIER, SAM=VLT-NACO/SAM, or NACO=VLT-Nasmyth/CONICA for table 6)instrcharEpoch1[2011/2015] First epoch observation (in Besselian years)yrobs.param;obsdoubleEpoch2[2011/2015]? Second epoch observation (in Besselian years)yrobs.param;obsdoublenullabletheta[0/630] Position angle of pair {theta}degpos.posAngfloate_theta[0.02/82] theta uncertaintydegstat.error;pos.posAngfloatrho[0.3/252] Projected separation of pair {rho}maspos.angDistancefloate_rho[0.02/28] rho uncertaintymasstat.errorfloatDHmag[-4.1/8]? H-band magnitude difference between the two companionsmagphot.mag;em.IR.H;arith.difffloatnullablef_DHmag[f] fixed DHmagmeta.codechare_DHmag[0.01/2.5]? DHmag uncertaintymagstat.error;phot.magfloatnullableDKsmag[-4/8.3]? Ks-band magnitude difference (1)magphot.mag;em.IR.K;arith.difffloatnullablee_DKsmag[0.01/2]? DKsmag uncertainty (1)magstat.error;phot.magfloatnullableDL'mag[1.3/4.2]? L'-band magnitude difference (only for table 5) (1)magphot.mag;arith.difffloatnullablee_DL'mag[0.1/2.5]? DL'mag uncertainty (1)magstat.error;phot.magfloatnullablePspur[0/1]? Probability of spurious detection (only for table 6) (2)stat.fit.goodnessfloatnullableJ/ApJS/215/15/smashSMaSH+ main, runaway and supplementary target listSimbadNameSimbad column added by the CDSmeta.idcharHmag[2.6/8.4] H-band magnitudemagphot.mag;em.IR.HfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSimbad column added by the CDSmeta.codecharPIOObservation with VLTI/PIONIERmeta.codecharSAMObservation with VLT-NACO/SAM (Sparse Aperture Masking)meta.codecharNcNumber of companion detections with PIONER and/or NACOmeta.numberintnullableNameStar name (HD, BD or CPD)meta.id;meta.maincharf_Name[a] Flag on Name (1)meta.codecharONameOther namemeta.idcharSpTMK spectral typesrc.spTypecharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainKsmag[2.6/8.4] Ks-band magnitudemagphot.mag;em.IR.KfloatVmag[2.2/14.5] V-band magnitude (2)magphot.mag;em.opt.Vfloatr_Vmag[S] S: magnitude from SIMBAD (2)meta.ref;pos.framecharWDSCross-match within 2" with the Washington Visual Double Star Catalogmeta.ref.urlintnullable