J/AJ/151/104ivo://CDS.VizieR/J/AJ/151/104doi:10.26093/cds/vizier.51510104CDSYan J.Zhang P.Liu W.Liu Q.2017-07-05T06:59:11Z2016-10-06T09:41:02ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsbe-starsinfrared-photometryvisible-astronomybroad-band-photometryspectroscopyline-intensitiesWe present the spectroscopic and photometric observations on the Be/X-ray binary RX J0440.9+4431 from 2001 to 2014. The short-term and long-term variability of the H{alpha} line profile indicates that one-armed global oscillations existed in the circumstellar disk. Several positive and negative correlations between the V-band brightness and the H{alpha} intensity were found from the long-term photometric and spectroscopic observations. We suggest that the monotonic increase of the V-band brightness and the H{alpha} brightness between our 2005 and 2007 observations might be the result of a continuous mass ejection from the central Be star, while the negative correlation in 2007-2010 should be caused by the cessation of mass loss from the Be star just before the decline in V-band brightness began (around our 2007 observations). With the extension of the ejection material, the largest circumstellar disk during the last two decades has been observed in our 2010 observations with an equivalent width of approximately -12.88{AA}, which corresponds to a circumstellar disk with a size of 12.9 times the radius of the central Be star. Three consecutive X-ray outbursts peaking around MJD 55293, 55444, and 55591 might be connected with the largest circumstellar disk around the Be star. We also use the orbital motion of the neutron star as a probe to constrain the structure of the circumstellar disk and estimate the eccentricity of the binary system to be >=0.4. After three years of the H{alpha} intensity decline after the X-ray outbursts, a new circumstellar disk was being formed around the Be star after our 2013 observations.2016AJ....151..104Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/151/104CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)J/A+A/590/A122 : Spectra of high-mass X-ray binaries (Reig+, 2016)J/BaltA/24/395 : X-ray and radio sources in binaries (Malkov+, 2015)J/A+A/574/A33 : BVRI photometry of high-mass X-ray binaries (Reig+, 2015)J/A+A/462/1081 : BVRIJHK light curves of 4U 0115+63/V635 Cas (Reig+, 2007)J/A+A/455/1165 : Catalogue of Galactic high-mass X-ray binaries (Liu+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/151/104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/151/104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/151/104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/151/104https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/151/104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/151/104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap1.9821045660507152e-19 4.920466254354166e-19InfraredOpticaldefaultJ/AJ/151/104/table1Summary of the spectroscopic observations of LSV+44 17 between our 2001 and 2014 observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observationtime.epochnullablef_Date[b] Flag "b" on Date indicates data obtained with the Lijiang 2.4m telescopemeta.codecharExp[100/1200] Exposure timestime.duration;obs.exposureintMJD[52177/56930] Modified Julian Datedtime.epochdoubleDisp[1/2.45] Dispersion (spectral resolution) (in {AA}/pixels)0.1nm/pixinstr.dispersionfloatEWHa[0.6/12.9] H{alpha} equivalent width0.1nmspect.line.eqWidth;em.line.Halphafloate_EWHa[0.03/0.51] Uncertainty in EWHa0.1nmstat.errorfloatlogV/R[-0.16/0.11]? Log V/R ratio of the H{alpha} line (2)spect.line.intensity;arith.ratiofloatnullablef_logV/RFlag on logV/R (single)meta.codecharRd/Rs[1.9/12.9]? Ratio of H{alpha} emission region radius to central star radius (R_d_/R_*_)phys.size;arith.ratiofloatnullableJ/AJ/151/104/table2Summary of the BVRI photometric observations of LSV+44 17 between our 2007 and 2014 observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[54403.3/56929.3] Modified Julian Datedtime.epochdoubleBmag[-3.3/-3]? B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.01/0.02]? Uncertainty in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag[-3.6/-3.2]? V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.009/0.023]? Uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableRmag[-3.5/-3.1]? R band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag[0.011/0.026]? Uncertainty in Rmagmagstat.error;phot.mag;em.opt.RfloatnullableImag[-2.1/-1.7]? I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.009/0.013]? Uncertainty in Imagmagstat.error;phot.mag;em.opt.Ifloatnullable