J/MNRAS/498/6005ivo://CDS.VizieR/J/MNRAS/498/6005doi:10.26093/cds/vizier.74986005CDSMunday J.Jones D.Garcia-Rojas J.Boffin H.M.J.Miszalski B.,Corradi R.L.M.Rodriguez-Gil P.Rubio-Diez M.M.Santander-Garcia M.,Sowicka P.2024-08-21T20:16:08Z2020-10-07T10:22:09ZCDS support team

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

cds-question@unistra.frplanetary-nebulaephotometryvisible-astronomyradial-velocityWe present a detailed study of the binary central star of the planetary nebula ETHOS 1 (PN G068.1+11.0). Simultaneous modelling of light and radial velocity curves reveals the binary to comprise a hot and massive pre-white-dwarf with an M-type main-sequence companion. A good fit to the observations was found with a companion that follows expected mass-temperature-radius relationships for low-mass stars, indicating that despite being highly irradiated it is consistent with not being significantly hotter or larger than a typical star of the same mass. Previous modelling indicated that ETHOS 1 may comprise the first case where the orbital plane of the central binary does not lie perpendicular to the nebular symmetry axis, at odds with the expectation that the common envelope is ejected in the orbital plane. We find no evidence for such a discrepancy, deriving a binary inclination in agreement with that of the nebula as determined by spatio-kinematic modelling. This makes ETHOS 1 the ninth post-common-envelope planetary nebula in which the binary orbital and nebular symmetry axes have been shown to be aligned, with as yet no known counter-examples. The probability of finding such a correlation by chance is now less than 0.00002%.2020MNRAS.498.6005Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/6005CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/6005https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/498/6005http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/498/6005https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/498/6005https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/498/6005http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/498/6005GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/498/6005/bmagB-band light curveJDHeliocentric Julian Datedtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintmagApparent magnitude in Bandmagphot.magfloate_magUncertainty of magnitude in Bandmagstat.error;phot.magfloatBand[Bgri] Observed bandinstr.bandpasscharJ/MNRAS/498/6005/gmagg-band light curveBand[Bgri] Observed bandinstr.bandpasscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDHeliocentric Julian Datedtime.epochdoublemagApparent magnitude in Bandmagphot.magfloate_magUncertainty of magnitude in Bandmagstat.error;phot.magfloatJ/MNRAS/498/6005/rmagr-band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDHeliocentric Julian Datedtime.epochdoublemagApparent magnitude in Bandmagphot.magfloate_magUncertainty of magnitude in Bandmagstat.error;phot.magfloatBand[Bgri] Observed bandinstr.bandpasscharJ/MNRAS/498/6005/imagi-band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDHeliocentric Julian Datedtime.epochdoublemagApparent magnitude in Bandmagphot.magfloate_magUncertainty of magnitude in Bandmagstat.error;phot.magfloatBand[Bgri] Observed bandinstr.bandpasscharJ/MNRAS/498/6005/rvRadial velocity curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDHeliocentric Julian Datedtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVUncertainty of radial velocity measurementkm/sstat.errorfloat