The extremely high albedo of LTT 9779 b revealed by CHEOPS - An ultrahot Neptune with a highly metallic atmosphere

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Table 2

Priors of the fitted parameters.

Parameter		Units	Distribution
Transit depth	D	ppm	2070.3 (fixed)
Impact parameter	b	R_⋆	0.9123036 (fixed)
Orbital period	P	d	𝒩 (0.79207022(69))
Transit ref. time	T₀ – 2450000	BJD	𝒩 (8783.51636(27))
Transit width	W	Phase	𝒩 (0.0419(58))
Eclipse depth	L	ppm	𝒰 (1, 10⁵)
Flux scale factor	c	–	𝒰 (0, 2)
Glint scale factor	g_s	–	𝒰 (0, 2)
Flux vs time	dfdt	–	𝒰 (0, 1)
Transit time^(a)	T_c,i(n)	BJD	𝒩 (T₀ + n × P)

Notes. We used normal, 𝒩(µ₀, σ₀), or uniform, 𝒰(lower_limit, upper_limit), distributions for the priors of the fitted parameters. ^(a)The transit time for each visit was computed using P and T₀ reported here and projecting their respective uncertainties.

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