@article{51bb79f9b9d24fab81549c384875ecc2,
title = "A 421-d activity cycle in the BeX recurrent transient A0538-66 from MACHO monitoring",
abstract = "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 previously found orbital period. Furthermore, the orbital activity is only seen at certain phases of the 421-d cycle, suggesting that the long-term modulation is related to variations in the Be star envelope.",
keywords = "Binaries: Close, Stars: Individual: A0538-66, X-rays: Stars",
author = "C. Alcock and Allsman, {R. A.} and Alves, {D. R.} and Axelrod, {T. S.} and Becker, {A. C.} and Bennett, {D. P.} and Charles, {P. A.} and Cook, {K. H.} and Drake, {A. J.} and Freeman, {K. C.} and M. Geha and K. Griest and Lehner, {M. J.} and Marshall, {S. L.} and McGowan, {K. E.} and D. Minniti and Nelson, {C. A.} and Peterson, {B. A.} and P. Popowski and Pratt, {M. R.} and Quinn, {P. J.} and Stubbs, {C. W.} and W. Sutherland and Tomaney, {A. B.} and T. Vandehei and Welch, {D. L.}",
note = "Copyright: Copyright 2005 Elsevier Science B.V., Amsterdam. All rights reserved.",
year = "2001",
month = mar,
day = "11",
doi = "10.1046/j.1365-8711.2001.04041.x",
language = "English",
volume = "321",
pages = "678--684",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",
}