The obliquity and atmosphere of the hot Jupiter WASP-122b (KELT-14b) with ESPRESSO: An aligned orbit and no sign of atomic or molecular absorption

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Table 2

Observing log of WASP-122b transit observations.

Night	Date of observation	Telescope	Start [UT]	End [UT]	Airmass (a) change	T_exp [s]	N_obs	S/N ^(b)
1	2021-01-19	VLT-UT2	02:27	08:30	1.11–1.12–1.86	300	58	22.9–41.1
2	2021-02-12	VLT-UT3	01:04	07:06	1.10–1.13–1.96	400	48	23.4–51.4

Notes. ^(a) Airmass change during the observations, where the values represent, airmass at the beginning of the nights, mid-observations, and at the end of the night, respectively. ^(b)Minimum and maximum S/N for each night, calculated in Na I echelle order (physical order 104).

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