Abstract
X-RAY observations of the pulsating X-ray source Cen X-3 indicate1 that it is a component of an eclipsing binary with a circular orbit of radius 0.08 AU. The position and period for Cen X-3 and for its suggested optical counterpart, LR Cen, are given in Table 1. There is a slight discrepancy in the agreement of the positions and periods. Observations are under way to redetermine the optical period.
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Schreier, E., Levinson, R., Gursky, H., Kellogg, E., Tananbaum, H., and Giacconi, R., Astrophys. J. Lett., 172, L79 (1972).
Uitterdijk, F., Bull. Astron. Insts. Netherlands, 6, 295 (1932).
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PETERSON, B. Identification of Cen X-3. Nature 236, 449 (1972). https://doi.org/10.1038/236449a0
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DOI: https://doi.org/10.1038/236449a0
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