Fig. 3
Light-travel-time (LTT) effect produced by a third body in an elliptical orbit about DP Leo. Upper panel: O − C time differences relative to a linear ephemeris. The curve shows the eccentric orbit fit, the data points represent the weighted means for 18 independent subsets of data taken between 1979 and 2010, as explained in the text. The inset is an enlargement of the section containing the new MONET/North data. Lower panel: residuals relative to the eccentric-orbit fit.
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