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Table 1

Instrument set-ups of the observations used.

Instrument and set-up λ range [Å ] FWHM [km s−1] FWHM [Å] Reference
HARPS 3800–6900 115 000 2.6 ~0.048 Wyttenbach et al. (2015)
HST STIS G430L 2900–5700 530 565 ~8 Sing et al. (2011)
HST STIS G750M 5808–6380 5000 60 ~1.2 Huitson et al. (2012)
HST ACS HRC G800L 5500–10 500 140 2140 ~40 Pont et al. (2008)
HST WFC3 G141 11 000–17 000 130 2300 ~108 McCullough et al. (2014)

Notes. For each data set, we indicate the wavelength range covered, the resolving power and the width of the instrumental LSF that we adopted. The HST data sets were also analysed by Sing et al. (2016), who corrected the observations for the effect of stellar activity. We use their version of the HST transmission spectra in our work.

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