Generality of the dynamics-driven morphological cycle

Determine whether the proposed dynamics-driven morphological evolutionary cycle extends beyond MASTER OT J072703.91-631952.8 to other VY Scl stars.

Background

The authors propose that J0727 undergoes a cycle from a minimal disk to a large circular disk, then to an eccentric disk, a tilted disk, and finally back to a minimal disk. They state that the available evidence does not establish that all brightness drops in J0727 arise from this cycle, and its applicability to the broader VY Scl population remains unresolved.

References

Nevertheless, current evidence cannot conclusively attribute all brightness drops in J0727 to this morphological evolutionary picture, and whether this mechanism extends beyond J0727 to other VY Scl stars remains unclear.

— Dynamically driven collapse of a thermally stable accretion disk in a nova-like system  (2608.27878 - Li et al., 28 Aug 2026) in Section 3.3, Discussion, “A dynamics-driven morphological cycle of the accretion disk”