Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, 2021, 505 (1), pp.939-946. ⟨10.1093/mnras/stab1348⟩ Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 505 (1), pp.939-946. ⟨10.1093/mnras/stab1348⟩