The polar orbit of the warm Neptune GJ 436b seen with VLT/ESPRESSO

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Volume 663 (July 2022)

A&A, 663 (2022) A160

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Table 2

Quality assessment of ESPRESSO CCF_DI.

Sky correction	Yes	No	Yes

Mask	Classic	Improved	Improved
<Contrast> (%)	33.993	30.677	30.723
	33.958	30.625	30.674
e_Contrast (%)	0.012	0.013	0.014
	0.011	0.012	0.013
σ_Contrast (%)	0.024	0.016	0.016
	0.021	0.015	0.017
$σ_{Contrast}^{rel} (ppm)$ $\sigma _{{\rm{Contrast}}}^{{\rm{rel}}}\left( {{\rm{ppm}}} \right)$	697	523	507
	605	495	558

<FWHM> (km s^–1)	7.0304	4.9606	4.9577
	7.0360	4.9641	4.9652
e_FWHM (ms^–1)	2.2	1.8	1.9
	2.0	1.7	1.7
σ_FWHM (m s^–1)	3.7	1.6	1.5
	2.9	1.3	1.2
$σ_{FWHM}^{rel} (ppm)$ $\sigma _{{\rm{FWHM}}}^{{\rm{rel}}}\left( {{\rm{ppm}}} \right)$	527	328	296
	412	259	252

e_RV (cm s^–1)	78	67	71
	69	61	63
σ_RV (cm s^–1)	78	70	72
	72	64	58

Notes. For each property, values on the first (resp.) line correspond to Visit 1 (resp. 2). σ indicates standard deviations of the out-of-transit contrast, FWHM, and Keplerian RV residuals with respect to their mean value (〈x〉). The σ^rel dispersions have been normalized by this mean to allow for a direct comparison between cases. e_x indicate the mean out-of-transit error on x.

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