Detection of sodium in the atmosphere of WASP-69b | Astronomy & Astrophysics (A&A)

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Table 2

Observations log for WASP-69 and HD 189733 for the employed data sets.

		Date	# Spectra¹	Exp. time [s]	Airmass	S/N ²	S/N ³	Fiber B⁴

WASP-69	Night 1	2016-06-04	8/16	900	2.2–1.2	~ 45	~ 11	Yes
	Night 2	2016-08-04	8/18	900	1.5–1.2	~ 40	~ 8	Yes

HD 189733	Night 1	2006-09-07	9/20	900–600	1.6–2.1	~ 165	~ 40	No
	Night 2	2007-07-19	18/39	300	2.4–1.6	~ 115	~ 22	Yes
	Night 3	2007-08-28	19/40	300	2.2–1.6	~ 100	~ 20	Yes

Notes.

⁽¹⁾

Number of in-transit spectra/total number of spectra.

⁽²⁾

S/N per pixel extracted in the continuum near 5900Å.

⁽³⁾

S/N in the lines core of the Na I D lines.

⁽⁴⁾

Fiber B monitoring the sky simultaneously to the target observations.

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