J/A+A/441/685ivo://CDS.VizieR/J/A+A/441/685doi:10.26093/cds/vizier.34410685CDSVal Baker A.Norton A.J.Quaintrell H.2017-06-29T08:55:26Z2005-10-22T13:03:50ZCDS support team

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

cds-question@unistra.frx-ray-binary-starssupergiant-starsradial-velocityspectroscopyWe present new optical spectroscopy of the eclipsing binary pulsar Sk 160/SMC X-1. From the He I absorption lines, taking heating corrections into account, we determine the radial velocity semi-amplitude of Sk 160 to be 21/8+/-1.8km/s. Assuming Sk 160 fills its Roche-lobe, the inclination angle of the system is i=65.3+/-1.3{deg} and in this case we obtain upper limits for the mass of the neutron star as Mx=1.21+/-0.10M_{sun}_ and for Sk 160 as Mo=16.6+/-0.4M_{sun}.2005A&A...441..685Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/441/685CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/441/685https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/441/685http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/441/685https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/441/685https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/441/685http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/441/685GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/441/685/table2HeI absorption line & HeII emission line heliocentric radial velocity data for Sk 160recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDJulian Date (JD-2400000.5) of each observationddoublePhase[0/1] Orbital phase of each observation (ecl=0)floatHRVHeIHeliocentric HeI absorption line raw RVskm/sinte_HRVHeIrms uncertainty in each RVkm/sintHRVHeIcHeating corrected heliocentric HeI RVskm/sintHRVHeII? Heliocentric HeII emission line RVskm/sintnullable