Table 1

Radial velocity amplitudes (K1) and systemic velocities (γ) of KOI-74, measured from ISIS/WHT and HERMES/Mercator spectra. The uncertainties that are given are scaled to get a unit χ2 per degree of freedom. Initial reduced χ2 is given in the last column. Two techniques have been used: a Gaussian fit to the Mg ii line at 4481 Å and a Gaussian fit to the mean profile of the Balmer lines at 4102, 4340 and 4861 Å (see text for details).

InstrumentLinesK1 (km s−1)γ (km s−1)formula
ISISBalmer15.8 ± 0.4−50.9 ± 0.31.2
Mg ii15.4 ± 0.7−49.3 ± 0.51.6
HERMESBalmer14.9 ± 0.4−47.1 ± 0.30.5
Mg ii16.5 ± 1.3−51.0 ± 1.02.3
Weighted mean (adopted)15.4 ± 0.3−49.1 ± 0.2
InstrumentLinesK1 (km s−1)γ (km s−1)formula
ISISBalmer15.8 ± 0.4−50.9 ± 0.31.2
Mg ii15.4 ± 0.7−49.3 ± 0.51.6
HERMESBalmer14.9 ± 0.4−47.1 ± 0.30.5
Mg ii16.5 ± 1.3−51.0 ± 1.02.3
Weighted mean (adopted)15.4 ± 0.3−49.1 ± 0.2
Table 1

Radial velocity amplitudes (K1) and systemic velocities (γ) of KOI-74, measured from ISIS/WHT and HERMES/Mercator spectra. The uncertainties that are given are scaled to get a unit χ2 per degree of freedom. Initial reduced χ2 is given in the last column. Two techniques have been used: a Gaussian fit to the Mg ii line at 4481 Å and a Gaussian fit to the mean profile of the Balmer lines at 4102, 4340 and 4861 Å (see text for details).

InstrumentLinesK1 (km s−1)γ (km s−1)formula
ISISBalmer15.8 ± 0.4−50.9 ± 0.31.2
Mg ii15.4 ± 0.7−49.3 ± 0.51.6
HERMESBalmer14.9 ± 0.4−47.1 ± 0.30.5
Mg ii16.5 ± 1.3−51.0 ± 1.02.3
Weighted mean (adopted)15.4 ± 0.3−49.1 ± 0.2
InstrumentLinesK1 (km s−1)γ (km s−1)formula
ISISBalmer15.8 ± 0.4−50.9 ± 0.31.2
Mg ii15.4 ± 0.7−49.3 ± 0.51.6
HERMESBalmer14.9 ± 0.4−47.1 ± 0.30.5
Mg ii16.5 ± 1.3−51.0 ± 1.02.3
Weighted mean (adopted)15.4 ± 0.3−49.1 ± 0.2
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