Open Access

Table B.1.

Phase retrieval under high microlensing magnifications.

S/N 10 20 30
Fe II 22.3 ± 2.2 days 22.3 ± 1.8 days 22.3 ± 1.7 days 22.4 ± 1.6 days
Hα 21.8 ± 2.2 days 21.9 ± 1.5 days 21.9 ± 1.3 days 21.9 ± 1.2 days
21.5 ± 2.2 days 21.7 ± 1.7 days 21.7 ± 1.6 days 21.7 ± 1.6 days
Fe II + Hα + Hβ 22.0 ± 1.3 days 22.0 ± 1.0 days 22.0 ± 0.9 days 22.0 ± 0.8 days

Notes. We list the weighted average and the 1σ uncertainties of the phase retrievals using the three absorption lines (Fe II, Hα, and Hβ) for the three different S/N values (10, 20, and 30) and for the noiseless case, indicated by S/N = ∞. The last row shows the uncertainty on the phase when using all three lines, assuming the noise and the microlensing in these lines are uncorrelated.

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