J/ApJ/768/128ivo://CDS.VizieR/J/ApJ/768/128doi:10.26093/cds/vizier.17680128CDSTouhami Y.Gies D.R.Schaefer G.H.McAlister H.A.Ridgway S.T.,Richardson N.D.Matson R.Grundstrom E.D.ten Brummelaar T.A.,Goldfinger P.J.Sturmann L.Sturmann J.Turner N.H.Farrington C.2017-12-22T05:32:06Z2015-01-08T09:18:40ZCDS support team

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

cds-question@unistra.frinterferometrybe-starsinfrared-sourcesWe report on a high angular resolution survey of circumstellar disks around 24 northern sky Be stars. The K-band continuum survey was made using the CHARA Array long baseline interferometer (baselines of 30-331m). The interferometric visibilities were corrected for the flux contribution of stellar companions in those cases where the Be star is a member of a known binary or multiple system. For those targets with good (u, v) coverage, we used a four-parameter Gaussian elliptical disk model to fit the visibilities and to determine the axial ratio, position angle, K-band photospheric flux contribution, and angular diameter of the disk's major axis. For the other targets with relatively limited (u, v) coverage, we constrained the axial ratio, inclination angle, and/or disk position angle where necessary in order to resolve the degeneracy between possible model solutions. We also made fits of the ultraviolet and infrared spectral energy distributions (SEDs) to estimate the stellar angular diameter and infrared flux excess of each target. The mean ratio of the disk diameter (measured in K-band emission) to stellar diameter (from SED modeling) is 4.4 among the 14 cases where we reliably resolved the disk emission, a value which is generally lower than the disk size ratio measured in the higher opacity H{alpha} emission line. We estimated the equatorial rotational velocity from the projected rotational velocity and disk inclination for 12 stars, and most of these stars rotate close to or at the critical rotational velocity.2013ApJ...768..128Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/768/128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)III/251 : ELODIE library V3.1 (Prugniel+ 2007)VI/102 : Geneva stellar evolution tracks and isochrones (Lejeune+, 2001)II/220 : Polarisation of Be stars (McDavid, 1986-1999)III/86 : SKYLAB S-019 Far-UV Objective-Prism Spectrophotometry (Henize+ 1979)J/A+A/540/A53 : {gamma} Cas radial velocity curve (Smith+, 2012)J/A+A/537/A59 : Radial velocities of gamma Cas (Nemravov+, 2012)J/ApJ/745/24 : A search for new companions with CHARA (Raghavan+, 2012)J/ApJ/736/89 : Search for companions around nearby stars (Janson+, 2011)J/ApJ/722/605 : A stellar rotation census of B stars (Huang+, 2010)J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)J/AJ/137/3358 : Speckle interferometry of massive stars (Mason+, 2009)J/A+A/493/1099 : CaII HK emission in rapidly rotating stars (Schroeder+, 2009)J/ApJ/689/461 : Circumstellar disk of {chi} Oph (Tycner+, 2008)J/ApJ/654/527 : Interferometric obs. of northern Be stars (Gies+, 2007)J/A+A/459/137 : Bright Be shell stars (Rivnius+, 2006)J/A+A/450/735 : Effective temperatures and radii of stars (Masana+, 2006)J/A+A/450/681 : Companions to close spectroscopic binaries (Tokovinin+, 2006)J/A+A/440/305 : Fundamental param. of fast-rotating B stars (Fremat+, 2005)J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)J/AJ/127/1727 : Differential magnitudes of binary stars (Horch+, 2004)J/AJ/124/1670 : Post-T Tauri Stars in Sco-Cen Association (Mamajek+, 2002)J/A+A/368/912 : Polarization and rotational vel. of Be stars (Yudin, 2001)J/A+A/328/551 : Spectroscopic data of 4 Herculis (Koubsky+ 1997)J/A+A/290/609 : Be stars near-IR excess (Dougherty+, 1994)J/AJ/106/637 : ICCD speckle observations. IX (Mason+, 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/768/128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/768/128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/768/128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/768/128https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/768/128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/768/128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/768/128/table1 (Adopted stellar parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/768/128/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/768/128/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/768/128/table1?GETtext/xml+votable180.050000true11.181327848.2843650.0055555555555555566/472 474 1748 1769 2775 2884 3030 9054 9836 11959 13268 13292 13721 15375 15778 18915 19017 19402 22334 24179 30722 31759 32610 44502https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/768/128?format=asciiInfrareddefaultJ/ApJ/768/128/table1Adopted stellar parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNvNumber of visibility measuresmeta.numberintnullableHDHD numbermeta.idintNameStar namemeta.id;meta.maincharSpTMK spectral type from Yudin (2001, J/A+A/368/912)src.spTypecharTeff[9800/28783] Effective temperature (1)Kphys.temperature.effectiveintlogg[3/4] Surface gravity (1)log(cm.s**-2)phys.gravityfloatPA[18/177] Disk position angle (2)degpos.posAngintb/a[0/1] Ratio of minor to major disk axis (r) (3)phys.angSize;arith.ratiofloatBcatDisplay data from Yudin, 2001, J/A+A/368/912 and Fremat, 2005, J/A+A/440/305meta.ref.urlintnullablePlotVisibilities vs Baseline plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/768/128/table3Calibrated visibilitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD numbermeta.idintMJDModified Julian Datedtime.epochdoubleTelTelescope Pairinstr.telcharuu Coordinate (cycles/arcsec) (1)arcsec**-1instr.paramfloatvv Coordinate (cycles/arcsec) (1)arcsec**-1instr.paramfloatPBL[46/331] Projected Baselineminstr.baselinefloatEBL[7/330] Effective Baselineminstr.baselinefloatVis[0.1/1] Visibilityobs.paramfloate_VisVisibility uncertaintystat.errorfloatCVis[0.5/1.2]? Corrected Visibilityobs.paramfloatnullablee_CVis? Corrected Visibility uncertaintystat.errorfloatnullable