J/ApJ/856/158ivo://CDS.VizieR/J/ApJ/856/158doi:10.26093/cds/vizier.18560158CDSKhokhlov S.A.Miroshnichenko A.S.Zharikov S.V.Manset N.Arkharov A.A.,Efimova N.Klimanov S.Larionov V.M.Kusakin A.V.Kokumbaeva R.I.,Omarov C.T.Kuratov K.S.Kuratova A.K.Rudy R.J.Laag E.A.,Crawford K.B.Swift T.K.Puetter R.C.Perry R.B.Chojnowski S.D.,Agishev A.Caton D.B.Hawkins R.L.Smith A.B.Reichart D.E.,Kouprianov V.V.Haislip J.B.2019-03-25T13:45:44Z2019-03-15T08:05:38ZCDS support team

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

cds-question@unistra.fremission-line-starsvisible-astronomyWide-band photometryinfrared-photometryradial-velocityline-intensitiesspectroscopyWe report the results of spectroscopic and photometric observations of the emission-line object AS 386. For the first time we found that it exhibits the B[e] phenomenon and fits the definition of an FS CMa type object. The optical spectrum shows the presence of a B-type star with the following properties: Teff=11000+/-500K, log L/L_{sun}_=3.7+/-0.3, a mass of 7+/-1M_{sun}_, and a distance D=2.4+/-0.3kpc from the Sun. We detected regular radial velocity variations of both absorption and emission lines with the following orbital parameters: Porb=131.27+/-0.09 days, semiamplitude K1=51.7+/-3.0km/s, systemic radial velocity {gamma}=-31.8+/-2.6km/s, and a mass function of f(m)=1.9+/-0.3M_{sun}_. AS 386 exhibits irregular variations of the optical brightness (V=10.92+/-0.05mag), while the near-IR brightness varies up to ~0.3mag following the spectroscopic period. We explain this behavior by a variable illumination of the dusty disk inner rim by the B-type component. Doppler tomography based on the orbital variations of emission-line profiles shows that the material is distributed near the B-type component and in a circumbinary disk. We conclude that the system has undergone a strong mass transfer that created the circumstellar material and increased the B-type component mass. The absence of any traces of a secondary component, whose mass should be >=7M_{sun}_, suggests that it is most likely a black hole.2018ApJ...856..158Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/856/158CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/cfht : Log of CFHT Exposures (CADC, 1979-)B/mk : Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)III/196 : Near-IR stellar spectra from 1.428 to 2.5um (Lancon+ 1996)I/259 : The Tycho-2 Catalogue (Hog+ 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)II/311 : WISE All-Sky Data Release (Cutri+ 2012)VI/71 : Revised version of the ILLSS Catalogue (Coluzzi 1993-1999)J/A+A/333/231 : O-M stars model atmospheres (Bessell+ 1998)J/MNRAS/363/1111 : Tycho-2 stars with IR excess (Clarke+, 2005)J/A+A/469/1221 : Sydney observatory Galactic survey (SOGS) (Fresneau+, 2007)J/PASP/120/1128 : Calibrated griz magnitudes of Tycho stars (Ofek, 2008)J/ApJ/700/209 : The B[e] phenomenon. III. VES 695 (Miroshnichenko+, 2009)J/A+A/537/A146 : Stellar models with rotation. 0.8<M<120 (Ekstrom+, 2012)J/PASP/126/469 : PolarBase catalogue of stellar spectra (Petit+, 2014)J/ApJ/809/129 : The Be phenomenon. V. MWC728 (Miroshnichenko+, 2015)J/ApJ/833/119 : Distances of Gaia DR1 TGAS sources (Astraatmadja+, 2016)J/MNRAS/463/4210 : All-sky catalog of solar-type dwarfs (Nascimbeni+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/856/158https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/856/158http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/856/158https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/856/158https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/856/158http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/856/158GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap7.952274030004205e-20 3.852589004194616e-19OpticalInfrareddefaultJ/ApJ/856/158/table1Optical photometry of AS 386recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian date; JD-2450000dtime.epochdoublePhaseOrbital phase according to the RV solutiontime.phasefloatVmagV-band magnitude (1)magphot.mag;em.opt.VfloatB-VB-V color index (1)magphot.color;em.opt.B;em.opt.VfloatV-Rc? V-Rc color index (1)magphot.color;em.opt.V;em.opt.RfloatnullableJ/ApJ/856/158/table2Near-IR photometry of AS 386recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian date; JD-2450000dtime.epochdoublePhaseOrbital phase according to the RV solutiontime.phasecharJmagJ-band brightnessmagphot.mag;em.IR.Jchare_Jmag1{sigma} uncertainty on Jmagmagstat.error;phot.mag;em.IR.JcharHmagH-band brightnessmagphot.mag;em.IR.Hchare_Hmag1{sigma} uncertainty on Hmagmagstat.error;phot.mag;em.IR.HcharKmagK-band brightnessmagphot.mag;em.IR.Kchare_Kmag1{sigma} uncertainty on Kmagmagstat.error;phot.mag;em.IR.KcharJ/ApJ/856/158/table3Summary of the spectroscopic observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObserving date (UT)time.epochnullableJDJulian date; JD-2450000dtime.epochdoubleExpTotal exposure timestime.duration;obs.exposureintRangeSpectral range in {AA}0.1nminstr.bandwidthcharObsIDObservatory ID (1)meta.id;instr.obstyintPhaseOrbital phase (see section 3.1.1)time.phasefloatRV? Radial velocity of the B-type starkm/sphys.veloc;pos.heliocentricfloatnullableJ/ApJ/856/158/table4Lines in the spectrum of AS 386CommLine appearance comment(s) (2)meta.note;spect.linecharLineLine ID -- element and ionization state (1)meta.id;spect.linerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMult[1/318]? Multiplet number, for the lines identified in Coluzzi (1993BICDS..43....7C)meta.id;meta.mainintnullablelamLab[3819.6/10311.2] Laboratory line position, in Angstroms0.1nmpos;spect.linedoubleEW[-10.7/1.3] Line equivalent width, in Angstroms0.1nmspect.line.eqWidthfloatIpeak[0.06/4.1]? Peak intensity of the line with respect to the local continuumphot.flux.density;spect.continuum;pos.lsrfloatnullable