Comparison of photometric amplitudes and Δr/ Δ(u − r) slopes observed for representative objects of three different types of NGC 2264 members (stochastic accretors, WTTS, and AA Tau-like stars) whose variability is driven by accretion bursts (red lines), cold magnetic spots (blue lines), or disk occultation (green lines), respectively. Luminosity increases from the bottom up along the y-axis and objects become bluer from right to left along the x-axis.
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