The nature of the supersoft X-ray source RX~J0513--69

K. A. Southwell, M. Livio, P. A. Charles +2

We present spectroscopy and photometry of the LMC supersoft binary system RX~J0513.9-6951. We derive a refined spectroscopic period of P$=0.761\pm 0.004$~d, which is consistent with…