Evidence for a black hole in the historical X-ray transient A 1524-61 (=KY TrA)

I. V. Yanes-Rizo, M. A. P. Torres, J. Casares +5

We present VLT spectroscopy, high-resolution imaging and time-resolved photometry of KY TrA, the optical counterpart to the X-ray binary A 1524-61. We perform a refined astrometry…