Abstract
We 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’t Zand 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.
Based on observations collected at the European Southern Observatory, Chile. S.C. thanks Rob Hynes for having alerted him to this new flaring source on September 1999, and Bob Hjellming for the communications he gave on the radio observations. S.C. is very grateful to the ESO/NTT team staff for their availability and skills. S.C. acknowledges support from grant F/00-180/A from the Leverhulme Trust. IFM acknowledges partial support from Conicet/Argentina.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Chaty, S., Mirabel, I.F., Martí, J. and Rodríguez, L.F.: 2001, Proceedings of the 4th INTEGRAL workshop, ESA-SP Conf. Proa, in press.
Hjellming, R.M., Rupen, M.P., Mioduszewski, A.J., et al.: 2000, Astron. Astrophys. Suppl. 195, 13403.
in’t Zand, J.J.M., Kuulkers, E., Bazzano, A., Cornelisse, R., Cocchi, M., Heise, J., Muller, J.M., Natalucci, L., Smith, M.J.S. and Ubertini, P.: 2000, Astron. Astrophys. 357, 520.
Markwardt, C.B., Swank, J.H. and Marshall, F.E.: 1999, IAU Circ. 7120.
Orosz, J.A., Kuulkers, E., van der Klis, M., McClintock, J.E., Jain, R.K., Bailyn, C.D. and Remillard, R.A.: 2000, IAU Circ. 7440.
Smith, D.A., Levine, A.M. and Morgan E.H.: 1999, IAU Circ. 7253.
Stubbings, R.: 1999, IAU Circ. 7253.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2001 Springer Science+Business Media New York
About this paper
Cite this paper
Chaty, S., Mirabel, I.F., Martí, J., Rodríguez, L.F. (2001). On The Nature of the Microquasar V4641 Sagittarii. In: Castro-Tirado, A.J., Greiner, J., Paredes, J.M. (eds) Microquasars. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0700-9_41
Download citation
DOI: https://doi.org/10.1007/978-94-010-0700-9_41
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3828-7
Online ISBN: 978-94-010-0700-9
eBook Packages: Springer Book Archive