The polar IL Leo in a low accretion state

We performed an optical study of the magnetic period-bouncer candidate IL Leo. Long-term photometric analysis over $\approx 20$ years reveals multiple state transitions. Modelling the ultraviolet and optical spectral energy distribution refined the white dwarf parameters, yielding a mass of $M_{\text{wd}}=0.74\pm 0.05M_{\odot }$ and an effective temperature of $T_{\mathrm{e}\mathrm{f}\mathrm{f}}=12700\pm 360$ K. We analyzed phase-resolved spectroscopy obtained with the 6-m BTA telescope and the VLT during the low state. Orbital variability of the H$\alpha$ emission, inferred from dynamical spectra and Doppler tomograms, suggests that it originates in the accretion stream. Zeeman splitting gives a mean magnetic field of $B=40.7\pm 0.5$ MG. Modelling two sets of cyclotron spectra determined a low-state accretion rate of $\dot{M}=(2.5-4.1)\times {10}^{-13}{M}_{\odot }$ yr${}^{-1}$ and a magnetic field of $B_{\mathrm{m}}\approx 41$ MG near magnetic pole.