Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) - II. A broadened sodium feature on the ultra-hot giant WASP-76b

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Table 6

Relative depth and detection level of atmospheric sodium on WASP-76b observed with HARPS for different central passbands.

Central passband (C)	Abs. depth (%)	σ
2 × 6.00 Å	0.108 ± 0.012	9.15
2 × 3.00 Å	0.152 ± 0.017	9.05
2 × 1.50 Å	0.223 ± 0.025	9.10
2 × 0.75 Å	0.371 ± 0.034	10.75

Notes. Excluding all data after planet transit for Night 3 (2017-11-22) due to clouds. The baseline of the specified night was created from the data obtained before the transit.

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