J/ApJ/890/86ivo://CDS.VizieR/J/ApJ/890/86doi:10.26093/cds/vizier.18900086CDSSuffak M.W.Jones C.E.Tycner C.Henry G.W.Carciofi A.C.Mota B.C.,Rubio A.C.2022-06-13T13:29:50Z2021-11-04T11:30:30ZCDS support team

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

cds-question@unistra.frbe-starsmultiple-starsvisible-astronomyspectroscopyline-intensitiesWide-band photometryWe model the circumstellar disk of {delta} Sco using the three-dimensional Monte Carlo radiative transfer code HDUST in order to quantify the large-scale changes in the disk through the years 2000-2018, and to see if these changes can be attributed to the secondary star affecting the disk throughout its orbit. We determine our best-fitting models through matching simulated observations to actual H{alpha} spectroscopy and V-band photometric observations. Our modeling results confirm previous findings that the disk of {delta}Sco was forming early in the century. We also find a period of disk dissipation when the companion is at apastron, as well as a significant growth of the disk between 2009 and 2011, prior to the periastron of 2011. Due to the steady-state nature of the disk after 2011, it is difficult to say whether the variations seen are due to the effect of the close passage of the binary companion.2020ApJ...890...86Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/890/86CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/408/305 : Spectroscopic obs. of delta Sco (Miroshnichenko+, 2003)J/ApJ/729/L5 : The revised orbit of the {delta} Sco system (Tycner+, 2011)J/ApJ/757/29 : Astrometric measurements of HD 143275 (Che+, 2012)J/A+A/537/A146 : Stellar models with rotation. Z=0.014 (Ekstrom+, 2012)J/A+A/558/A103 : Stellar models with rotation. Z=0.002 (Georgy+, 2013)J/AJ/145/142 : Differential BV photometry of {delta} Sco (Jones+, 2013)J/ApJ/766/119 : Radial velocities of {delta} Sco (Miroshnichenko+, 2013)J/ApJ/843/24 : H{alpha} interferometry obs. of 48 Per (Jones+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/890/86https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/890/86http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/890/86https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/890/86https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/890/86http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/890/86GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/890/86/table1H{alpha} observations for {delta} Sco from the Lowell ObservatoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/101] Spectrum Numbermeta.id;meta.mainintMJD[53461.4/58296.3] Modified Julian Date of observationdtime.epochdoubleindexedlambda[648.18/659.81] Wavelengthnmem.wldoubleF/Fc[0.001/7.3] Flux over continuum fluxphot.flux;arith.ratiodoubleJ/ApJ/890/86/table2H{alpha} EW data for {delta} ScorecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[51777/58296.3] Modified Julian Datetime.epochdoubleEWHa[-2.92/-0.33] H alpha Equivalent Widthnmspect.line.eqWidthfloatSourceSource of observation (1)meta.id;instr.telcharJ/ApJ/890/86/table3V-band data for delta ScorecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[51758.8/58656.8] Modified Julian Datetime.epochdoubleVmag[1.6/2.6] V-band magnitudemagphot.mag;em.opt.VfloatSourceSource of observation (1)meta.bibchar