J/MNRAS/471/1468ivo://CDS.VizieR/J/MNRAS/471/1468doi:10.26093/cds/vizier.74711468CDSEckersall A.J.Vaughan S.Wynn G.A.2024-08-17T20:20:13Z2020-07-03T14:43:46ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsstellar-massesstellar-distanceAll observations of Galactic X-ray binaries are affected by absorption from gas and dust in the interstellar medium (ISM) which imprints narrow (line) and broad (photoelectric edges) features on the continuum emission spectrum of the binary. Any spectral model used to fit data from a Galactic X-ray binary must therefore take account of these features; when the absorption is strong (as for most Galactic sources) it becomes important to accurately model the ISM absorption in order to obtain unbiased estimates of the parameters of the (emission) spectrum of the binary system. In this paper, we present analysis of some of the best spectroscopic data from the XMM-Newton RGS instrument using the most up-to-date photoabsorption model of the gaseous ISM ISMabs. We calculate column densities for H, O, Ne and Fe for seven transient black hole X-ray binary systems. We find that the hydrogen column densities in particular can vary greatly from those presented elsewhere in the literature. We assess the impact of using inaccurate column densities and older X-ray absorption models on spectral analysis using simulated data. We find that poor treatment of absorption can lead to large biases in inferred disc properties and that an independent analysis of absorption parameters can be used to alleviate such issues.2017MNRAS.471.1468Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/471/1468CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/471/1468https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/471/1468http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/471/1468https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/471/1468https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/471/1468http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/471/1468GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/471/1468/sources (List of studied sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/471/1468/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/471/1468/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/471/1468/sources?GETtext/xml+votable180.050000true265.9784583-29.74516670.0055555555555555566/14085 14610 25690 28723 28744 28798 28805 28827 28830-28831 28843-28844 28877 28898 28922 29208 29416 29691 29885 30428 37196 38470 41583 41809 42189 42196 42215 42378 42417 42441 42468 42487 42533https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/471/1468?format=asciidefaultJ/MNRAS/471/1468/sourcesList of studied sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSimbad namemeta.id;meta.maincharRAJ2000Simbad right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000.0)pos.eq.dec;meta.mainJ/MNRAS/471/1468/tablea1Observation logrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem Namemeta.id;pos.framecharMass? Mass (1)solMassphys.massfloatnullableDist? Distance (1)kpcpos.distancefloatnullableIncl? Inclination (1)degsrc.orbital.inclinationfloatnullableObsIDXMM-Newton ObsIDmeta.noteRevRevolution numbermeta.id;obscharDurDuration (ks)kstime.durationfloatDateObservation datetime.epoch;obsnullablepnmodepn mode (2)instr.setupchar