On the nature of the microquasar V4641 Sagittarii

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dc.creatorChaty, S.
dc.creatorMirabel, I. F.
dc.creatorMarti, J.
dc.creatorRodriguez, L. F.
dc.date2000-11-09
dc.date.accessioned2026-07-07T01:56:28Z
dc.date.available2026-07-07T01:56:28Z
dc.descriptionWe present photometric and spectroscopic optical and near-infrared (NIR) observations taken during the outburst on September 1999 of the source V4641 Sgr = SAX J1819.3-2525 (in'tzand et al., 2000) = XTE J1819-254 (Markwardt et al., 1999). We show that our observations suggest a distance between 4 and 8 kpc, the spectral type of the companion star being constrained between B3 and A2 V, making the system a High Mass X-ray Binary System (HMXB). In view of the radio and optical/NIR observations, it is possible that the ejecta of the source interacted with the surrounding medium of the source.
dc.description4 pages, 3 figures, to be published in `Proceedings of the Third Microquasar Workshop: Granada Workshop on galactic relativistic jet sources', Eds A. J.Castro-Tirado, J. Greiner and J. M. Paredes, Astrophysics and Space Science, in press
dc.identifierhttps://arxiv.org/abs/astro-ph/0011192
dc.identifierhttp://arxiv.org/abs/astro-ph/0011192
dc.identifierAstrophys.Space Sci. 276 (2001) 153-156
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2013
dc.subjectAstrophysics
dc.titleOn the nature of the microquasar V4641 Sagittarii
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