Na I and Hα absorption features in the atmosphere of MASCARA-2b/KELT-20b

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Table 2.

Summary of the measured relative absorption depth in [%] in the Na I D lines of the final transmission spectrum and the TLC of MASCARA-2b for various bandwidths.

	Na I
Bandwidth (Å)	D₂	D₁	D doublet^a	TLC^b
0.188	0.435 ± 0.085	0.386 ± 0.083	0.411 ± 0.059	–
0.375	0.320 ± 0.058	0.337 ± 0.057	0.324 ± 0.041	–
0.75	0.168 ± 0.042	0.178 ± 0.041	0.172 ± 0.029	0.200 ± 0.046
1.5	0.066 ± 0.030	0.076 ± 0.030	0.071 ± 0.021	0.116 ± 0.033
3.0	0.057 ± 0.022	0.045 ± 0.021	0.051 ± 0.015	0.077 ± 0.024
5.0	0.072 ± 0.017	0.066 ± 0.017	0.069 ± 0.012	0.083 ± 0.019

Notes.

^(a)

Average of both Na I D₁ and D₂ lines absorption depth.

^(b)

Absorption measured in the final TLC (see third row of Fig. 5).

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