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We present multi‐epoch medium‐resolution observations of two M4.5 candidate members in the halo of the ∼8 Myr η Chamaeleontis open cluster. During six months of observations, both stars exhibited variations in their Hα line profiles on time‐scales of days to months, with at least one episode of substantial activity attributable to accretion from a circumstellar disc. We derive an accretion rate of ∼ 10 −8.7   M  ⊙   yr −1  for this event, with a rate of ∼ 10 −10.6   M  ⊙   yr −1  in quiescence. Episodic accretion like that observed here suggests existing surveys of accreting weak‐lined T Tauri stars in young clusters are likely incomplete and that gas dissipation time‐scales calculated from the fraction of accreting objects are underestimates.

Episodic disc accretion in the halo of the ‘old’ pre‐main‐sequence cluster η Chamaeleontis ★