The atmospheric composition of the ultra-hot Jupiter WASP-178 b observed with ESPRESSO

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Table 1

Overview of the two transit observations for WASP-178 b.

Date	# Spectra⁽¹⁾	Exp. time [s]	Airmass	Seeing	S/N #116
2021-03-05	48 (23/25)	300 and 500	1.55 – 1.05 – 1.30	1 – 1.7	27–71
2021-07-09	61 (35/26)⁽²⁾	300	1.08 – 1.05 – 2.05	0.4 – 1.2	0–64⁽³⁾

Notes. ⁽¹⁾The in- and out-of-transit spectra are listed in parentheses, respectively. ⁽²⁾Seven pectra were discarded due to low S/N, leaving 32 in-transit and 22 out-of-transit spectra.⁽³⁾After the low S/N spectra were removed, the lowest S/N value was 18.

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