Searching for periodicities in the MACHO light curve of LMC X-2

C. Alcock*, R. A. Allsman, D. R. Alves, T. S. Axelrod, A. C. Becker, D. P. Bennett, P. A. Charles, K. H. Cook, A. J. Drake, K. C. Freeman, M. Geha, K. Griest, P. Groot, M. J. Lehner, S. L. Marshall, K. E. McGowan, D. Minniti, C. A. Nelson, B. A. Peterson, P. PopowskiM. R. Pratt, P. J. Quinn, W. Sutherland, A. B. Tomaney, T. Vandehei, J. Van Paradijs

*Corresponding author for this work

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    Abstract

    Using the exceptional long-term monitoring capabilities of the MACHO project, we present here the optical history of LMC X-2 for a continuous 6-yr period. These data were used to investigate the previously claimed periodicities for this source of 8.15 h and 12.54 d: we find upper limits of 0.10 mag and 0.09 mag, respectively.

    Original languageEnglish
    Pages (from-to)729-733
    Number of pages5
    JournalMonthly Notices of the Royal Astronomical Society
    Volume316
    Issue number4
    DOIs
    Publication statusPublished - 21 Aug 2000

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