Breaking degeneracies in exoplanetary parameters through self-consistent atmosphere–interior modelling

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Volume 692 (December 2024)

A&A, 692 (2024) A113

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Table 5

Best retrieval values for 51 Eгi b for all possible configurations.

Parameter	Solution 1	Solution 2	Solution 3	Solution 4 (Best match)
Mass (Jupiter)	${1.53}_{- 0.04}^{+ 0.04}$ ${1.53_{ - 0.04}^{ + 0.04}}$	${2.10}_{- 0.06}^{+ 0.02}$ ${2.10_{ - 0.06}^{ + 0.02}}$	${2.16}_{- 0.09}^{+ 0.05}$ ${2.16_{ - 0.09}^{ + 0.05}}$	$3 . 1 3_{- 0 . 04}^{+ 0 . 05}$ ${{\bf{3}}{\bf{.13}}_{ - {\bf{0}}{\bf{.04}}}^{{\bf{ + 0}}{\bf{.05}}}}$
Intrinsic Temperature (K)	${694.32}_{- 4.17}^{+ 5.17}$ ${694.32_{ - 4.17}^{ + 5.17}}$	${651.57}_{- 2.32}^{+ 1.65}$ ${651.57_{ - 2.32}^{ + 1.65}}$	${707.24}_{- 2.81}^{+ 2.83}$ ${707.24_{ - 2.81}^{ + 2.83}}$	$692 . 6 4_{- 2.50}^{+ 2.52}$ ${{\bf{692}}.{\bf{64}}4_{ - {\bf{2}}{\bf{.50}}}^{{\bf{ + 2}}{\bf{.52}}}}$
Metallicity (log10(× Solar))	$- {1.12}_{- 0.03}^{+ 0.03}$ ${ - 1.12_{ - 0.03}^{ + 0.03}}$	$- {0.73}_{- 0.01}^{+ 0.01}$ ${ - 0.73_{ - 0.01}^{ + 0.01}}$	$- {0.93}_{- 0.01}^{+ 0.01}$ ${ - 0.93_{ - 0.01}^{ + 0.01}}$	$- 0.9 1_{- 0 . 03}^{+ 0.03}$ ${ - {\bf{0}}.{\bf{91}}_{ - {\bf{0}}{\bf{.03}}}^{ + {\bf{0}}.{\bf{03}}}}$
Core (M_E)	${4.52}_{- 0.28}^{+ 0.02}$ ${4.52_{ - 0.28}^{ + 0.02}}$	${21.92}_{- 0.34}^{+ 0.27}$ ${21.92_{ - 0.34}^{ + 0.27}}$	${34.88}_{- 0.16}^{+ 0.10}$ ${34.88_{ - 0.16}^{ + 0.10}}$	$31.8 6_{- 0 . 18}^{+ 0 . 32}$ ${{\bf{31}}.{\bf{86}}_{ - {\bf{0}}{\bf{.18}}}^{{\bf{ + 0}}{\bf{.32}}}}$
Radius (Jupiter)	${1.39}_{- 0.01}^{+ 0.01}$ ${1.39_{ - 0.01}^{ + 0.01}}$	${1.28}_{- 0.01}^{+ 0.01}$ ${1.28_{ - 0.01}^{ + 0.01}}$	${1.27}_{- 0.00}^{+ 0.00}$ ${1.27_{ - 0.00}^{ + 0.00}}$	$1 . 2 5_{- 0 . 01}^{+ 0 . 01}$ ${{\bf{1}}{\bf{.25}}_{ - {\bf{0}}{\bf{.01}}}^{{\bf{ + 0}}{\bf{.01}}}}$
log(g)	${3.31}_{- 0.02}^{+ 0.02}$ ${3.31_{ - 0.02}^{ + 0.02}}$	${3.52}_{- 0.01}^{+ 0.01}$ ${3.52_{ - 0.01}^{ + 0.01}}$	${3.54}_{- 0.02}^{+ 0.01}$ ${3.54_{ - 0.02}^{ + 0.01}}$	$3.7 1_{- 0 . 01}^{+ 0 . 01}$ ${{\bf{3}}.{\bf{71}}_{ - {\bf{0}}{\bf{.01}}}^{{\bf{ + 0}}{\bf{.01}}}}$
log(age)	${6.23}_{- 0.03}^{+ 0.03}$ ${6.23_{ - 0.03}^{ + 0.03}}$	${6.89}_{- 0.02}^{+ 0.02}$ ${6.89_{ - 0.02}^{ + 0.02}}$	${6.86}_{- 0.02}^{+ 0.01}$ ${6.86_{ - 0.02}^{ + 0.01}}$	$7.2 9_{- 0 . 04}^{+ 0 . 04}$ ${{\bf{7}}.{\bf{29}}_{ - {\bf{0}}{\bf{.04}}}^{{\bf{ + 0}}{\bf{.04}}}}$
Age (Myr)	${1.70}_{- 0.11}^{+ 0.25}$ ${1.70_{ - 0.11}^{ + 0.25}}$	${7.76}_{- 0.35}^{+ 0.37}$ ${7.76_{ - 0.35}^{ + 0.37}}$	${7.24}_{- 0.33}^{+ 0.17}$ ${7.24_{ - 0.33}^{ + 0.17}}$	$19.5 0_{- 1 . 72}^{+ 1 . 88}$ ${{\bf{19}}.{\bf{50}}_{ - {\bf{1}}{\bf{.72}}}^{{\bf{ + 1}}{\bf{.88}}}}$

Notes. Retrieval 4 corresponds to the best match considering the system’s age. The errors correspond to a 1 sigma deviation in the posterior distributions. Table C.1 based on Figure C.1 shows more accurate retrieval errors. The systems age is estimated by Macintosh et al. (2015) to be 20(±6) Myr.

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