New clues on outburst mechanisms and improved spectroscopic elements of the black-hole binary V4641 Sagittarii

C. Lindstrom, J. Griffin, L. L. Kiss +4

We present spectroscopic observations of the black-hole binary V4641 Sagittarii, obtained between 4th July 2004 and 28th March 2005, which cover the minor outburst of the star in e…