Evidence for mass accretion driven by spiral shocks onto the white dwarf in SDSS J123813.73โ033933.0
Evidence for mass accretion driven by spiral shocks onto the white dwarf in SDSS J123813.73โ033933.0
We present high-time-resolution photometry and phase-resolved spectroscopy of the short-period ($P_\mathrm{orb} = 80.52\,\mathrm{min}$) cataclysmic variable SDSS J123813.73-033933.0, observed with the $\mathit{Hubble}$ $\mathit{Space}$ $\mathit{Telescope}$ $\mathit{(HST)}$, the $\mathit{Kepler/K2}$ mission and the Very Large Telescope (VLT). We also report observations of the first detected super-outburst. SDSS J1238-0339 shows two types of variability: quasi-regular โฆ