Swift J1357.2-0933: a massive black hole in the Galactic thick disc

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dc.contributor.authorMata Sanchez, D.
dc.contributor.authorMunoz Darias, T.
dc.contributor.authorCasares, J.
dc.contributor.authorCorral Santana, J. M.
dc.contributor.authorShahbaz, T.
dc.date.accessioned2024-01-10T14:21:48Z
dc.date.available2024-01-10T14:21:48Z
dc.date.issued2015
dc.description.abstractSwift J1357.2-0933 is one of the shortest orbital period black hole X-ray transients. It exhibited deep optical dips together with an extremely broad Ha line during outburst. We present 10.4-m Gran Telescopio Canarias (GTC) time-resolved spectroscopy during quiescence searching for donor star absorption features. The large contribution of the accretion flow to the total luminosity prevents the direct detection of the companion. Nevertheless, we constrain the non-stellar contribution to be larger than similar to 80 per cent of the total optical light, which sets new lower limits to the distance (d > 2.29 kpc) and the height over the Galactic plane (z > 1.75 kpc). This places the system in the Galactic thick disc. We measure a modulation in the centroid of the Ha line with a period of P = 0.11 +/- 0.04 d which, combined with the recently presented full width at half-maximum-K-2 correlation, results in a massive black hole (M-1 > 9.3 M-circle dot) and an similar to M2V companion star (M-2 similar to 0.4 M-circle dot). We also present further evidence supporting a very high orbital inclination (i greater than or similar to 80 degrees).
dc.description.funderFundacion La Caixa
dc.description.funderFONDECYT
dc.description.funderSpanish Ministerio de Economia y competitividad (MINECO)
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stv2111
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stv2111
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79783
dc.identifier.wosidWOS:000367997700080
dc.information.autorucFísica;Corral J;S/I;237760
dc.issue.numero2
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final2204
dc.pagina.inicio2199
dc.publisherOXFORD UNIV PRESS
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.rightsregistro bibliográfico
dc.subjectaccretion, accretion discs
dc.subjectstars: black holes
dc.subjectX-rays: binaries
dc.subjectX-RAY TRANSIENT
dc.subjectSHORTEST ORBITAL PERIOD
dc.subjectNOVA Z-CHAMAELEONTIS
dc.subjectFE K ABSORPTION
dc.subjectXTE J1118+480
dc.subjectACCRETION STATE
dc.subject2011 OUTBURST
dc.subjectSPECTROSCOPY
dc.subjectCANDIDATE
dc.subjectBINARIES
dc.titleSwift J1357.2-0933: a massive black hole in the Galactic thick disc
dc.typeartículo
dc.volumen454
sipa.codpersvinculados237760
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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