A 421-d activity cycle in the BeX recurrent transient A0538-66 from MACHO monitoring
A 421-d activity cycle in the BeX recurrent transient A0538-66 from MACHO monitoring
We present a ~ 5-yr optical light curve of the recurrent Be/X-ray transient A0538-66 obtained as a by-product of the MACHO Project. These data reveal both a long-term modulation at P = 420.8 +/- 0.8 d and a short-term modulation at 16.6510 +/- 0.0022 d which, within errors, confirms the …