Unraveling the brown dwarf desert: Four new discoveries and a unifying period-coded picture

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Volume 709 (May 2026)

A&A, 709 (2026) A130

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Table A.2

Derived parameters from the allesfitter analysis.

Parameter	TIC 9344899	TIC 52059926	TIC 13344668	TIC 63921468
Derived parameters

Host radius over semimajor axis; R_⋆/a_b	${0.0604}_{- 0.0020}^{+ 0.0026}$ $Mathematical equation: $0.0604_{ - 0.0020}^{ + 0.0026}$$	${0.00601}_{- 0.00019}^{+ 0.00023}$ $Mathematical equation: $0.00601_{ - 0.00019}^{ + 0.00023}$$	${0.00644}_{- 0.00020}^{+ 0.00022}$ $Mathematical equation: $0.00644_{ - 0.00020}^{ + 0.00022}$$	${0.01853}_{- 0.00042}^{+ 0.00045}$ $Mathematical equation: $0.01853_{ - 0.00042}^{ + 0.00045}$$
Semimajor axis over host radius; a_b/R_⋆	${16.55}_{- 0.67}^{+ 0.57}$ $Mathematical equation: $16.55_{ - 0.67}^{ + 0.57}$$	${166.4}_{- 6.0}^{+ 5.4}$ $Mathematical equation: $166.4_{ - 6.0}^{ + 5.4}$$	${155.2}_{- 5.2}^{+ 4.9}$ $Mathematical equation: $155.2_{ - 5.2}^{ + 4.9}$$	54.0 ± 1.3
Companion radius over semimajor axis b; R_b/a_b	${0.00478}_{- 0.00022}^{+ 0.00029}$ $Mathematical equation: $0.00478_{ - 0.00022}^{ + 0.00029}$$	0.000825 ± 0.000054	0.000886 ± 0.000062	${0.000672}_{- 0.000022}^{+ 0.000025}$ $Mathematical equation: $0.000672_{ - 0.000022}^{ + 0.000025}$$
Companion radius; R_b (R_⊕)	9.16 ± 0.40	${10.71}_{- 0.57}^{+ 0.52}$ $Mathematical equation: $10.71_{ - 0.57}^{ + 0.52}$$	${10.05}_{- 0.66}^{+ 0.61}$ $Mathematical equation: $10.05_{ - 0.66}^{ + 0.61}$$	${9.30}_{- 0.27}^{+ 0.30}$ $Mathematical equation: $9.30_{ - 0.27}^{ + 0.30}$$
Companion radius; R_b (R_jup)	0.817 ± 0.036	${0.955}_{- 0.051}^{+ 0.047}$ $Mathematical equation: $0.955_{ - 0.051}^{ + 0.047}$$	${0.896}_{- 0.059}^{+ 0.054}$ $Mathematical equation: $0.896_{ - 0.059}^{ + 0.054}$$	${0.830}_{- 0.024}^{+ 0.027}$ $Mathematical equation: $0.830_{ - 0.024}^{ + 0.027}$$
Semimajor axis; a_b (R_⊙)	${17.52}_{- 0.86}^{+ 0.80}$ $Mathematical equation: $17.52_{ - 0.86}^{ + 0.80}$$	118.8 ± 5.4	103.9 ± 4.6	126.7 ± 4.1
Semimajor axis; a_b (AU)	${0.0815}_{- 0.0040}^{+ 0.0037}$ $Mathematical equation: $0.0815_{ - 0.0040}^{ + 0.0037}$$	0.553 ± 0.025	0.483 ± 0.022	0.589 ± 0.019
Inclination; i_b (deg)	${88.95}_{- 0.56}^{+ 0.63}$ $Mathematical equation: $88.95_{ - 0.56}^{ + 0.63}$$	${89.685}_{- 0.071}^{+ 0.11}$ $Mathematical equation: $89.685_{ - 0.071}^{ + 0.11}$$	${89.49}_{- 0.14}^{+ 0.24}$ $Mathematical equation: $89.49_{ - 0.14}^{ + 0.24}$$	89.064 ± 0.046
Eccentricity; e_b	${0.029}_{- 0.018}^{+ 0.021}$ $Mathematical equation: $0.029_{ - 0.018}^{ + 0.021}$$	0.510 ± 0.026	0.7255 ± 0.0086	0.1773 ± 0.0051
Argument of periastron; w_b (deg)	${80.}_{- 33}^{+ 72}$ $Mathematical equation: $80._{ - 33}^{ + 72}$$	108.6 ± 3.4	143.1 ± 1.6	130.3 ± 1.5
Mass ratio; q_b	${0.01890}_{- 0.00090}^{+ 0.0010}$ $Mathematical equation: $0.01890_{ - 0.00090}^{ + 0.0010}$$	${0.0221}_{- 0.0012}^{+ 0.0013}$ $Mathematical equation: $0.0221_{ - 0.0012}^{ + 0.0013}$$	${0.1047}_{- 0.0052}^{+ 0.0059}$ $Mathematical equation: $0.1047_{ - 0.0052}^{ + 0.0059}$$	${0.0425}_{- 0.0014}^{+ 0.0015}$ $Mathematical equation: $0.0425_{ - 0.0014}^{ + 0.0015}$$
Companion mass; M_b (M_⊕)	$6170_{- 580}^{+ 610}$ $Mathematical equation: $6170_{ - 580}^{ + 610}$$	$5380_{- 370}^{+ 390}$ $Mathematical equation: $5380_{ - 370}^{ + 390}$$	$24100_{- 1600}^{+ 1700}$ $Mathematical equation: $24100_{ - 1600}^{ + 1700}$$	21510±1000
Companion mass; M_b (M_jup)	${19.4}_{- 1.8}^{+ 1.9}$ $Mathematical equation: $19.4_{ - 1.8}^{ + 1.9}$$	${16.9}_{- 1.1}^{+ 1.2}$ $Mathematical equation: $16.9_{ - 1.1}^{ + 1.2}$$	${75.7}_{- 5.0}^{+ 5.4}$ $Mathematical equation: $75.7_{ - 5.0}^{ + 5.4}$$	67.7 ± 3.3
Companion mass; M_b (M_⊙)	${0.0185}_{- 0.0017}^{+ 0.0018}$ $Mathematical equation: $0.0185_{ - 0.0017}^{ + 0.0018}$$	${0.0162}_{- 0.0011}^{+ 0.0012}$ $Mathematical equation: $0.0162_{ - 0.0011}^{ + 0.0012}$$	${0.0723}_{- 0.0048}^{+ 0.0052}$ $Mathematical equation: $0.0723_{ - 0.0048}^{ + 0.0052}$$	0.0646 ± 0.0031
Impact parameter; b_tra;b	${0.30}_{- 0.18}^{+ 0.15}$ $Mathematical equation: $0.30_{ - 0.18}^{ + 0.15}$$	${0.460}_{- 0.16}^{+ 0.100}$ $Mathematical equation: $0.460_{ - 0.16}^{ + 0.100}$$	${0.46}_{- 0.22}^{+ 0.11}$ $Mathematical equation: $0.46_{ - 0.22}^{ + 0.11}$$	${0.750}_{- 0.021}^{+ 0.023}$ $Mathematical equation: $0.750_{ - 0.021}^{ + 0.023}$$
Total transit duration; T_tot;b (h)	${4.00}_{- 0.10}^{+ 0.12}$ $Mathematical equation: $4.00_{ - 0.10}^{ + 0.12}$$	${4.87}_{- 0.14}^{+ 0.16}$ $Mathematical equation: $4.87_{ - 0.14}^{ + 0.16}$$	${3.48}_{- 0.15}^{+ 0.18}$ $Mathematical equation: $3.48_{ - 0.15}^{ + 0.18}$$	${11.56}_{- 0.34}^{+ 0.20}$ $Mathematical equation: $11.56_{ - 0.34}^{ + 0.20}$$
Host density from orbit; ρ_⋆;b (cgs)	${1.16}_{- 0.14}^{+ 0.12}$ $Mathematical equation: $1.16_{ - 0.14}^{ + 0.12}$$	2.83 ± 0.30	3.47 ± 0.34	0.172 ± 0.012
Companion density; ρ_b (cgs)	${44.1}_{- 7.0}^{+ 8.4}$ $Mathematical equation: $44.1_{ - 7.0}^{ + 8.4}$$	${24.1}_{- 3.6}^{+ 4.8}$ $Mathematical equation: $24.1_{ - 3.6}^{ + 4.8}$$	$131_{- 24}^{+ 33}$ $Mathematical equation: $131_{ - 24}^{ + 33}$$	$147_{- 16}^{+ 18}$ $Mathematical equation: $147_{ - 16}^{ + 18}$$
Companion surface gravity; g_b (cgs)	$71000_{- 8000}^{+ 7200}$ $Mathematical equation: $71000_{ - 8000}^{ + 7200}$$	$45100_{- 5400}^{+ 6500}$ $Mathematical equation: $45100_{ - 5400}^{ + 6500}$$	$231000_{- 29000}^{+ 36000}$ $Mathematical equation: $231000_{ - 29000}^{ + 36000}$$	244000 ± 17000
Equilibrium temperature; T_eq;b (K)¹	$923_{- 19}^{+ 22}$ $Mathematical equation: $923_{ - 19}^{ + 22}$$	${229.6}_{- 5.1}^{+ 5.5}$ $Mathematical equation: $229.6_{ - 5.1}^{ + 5.5}$$	237.2 ± 5.4	572.4 ± 9.3
Transit depth (undil.); δ_{tr;undil;b;TESS} (ppt)	${7.10}_{- 0.34}^{+ 0.36}$ $Mathematical equation: $7.10_{ - 0.34}^{ + 0.36}$$	${22.94}_{- 0.81}^{+ 0.90}$ $Mathematical equation: $22.94_{ - 0.81}^{ + 0.90}$$	${22.40}_{- 1.10}^{+ 1.30}$ $Mathematical equation: $22.40_{ - 1.10}^{ + 1.30}$$	${1.316}_{- 0.049}^{+ 0.055}$ $Mathematical equation: $1.316_{ - 0.049}^{ + 0.055}$$
Transit depth (dil.); δ_{tr;dil;b;TESS} (ppt)	${3.52}_{- 0.17}^{+ 0.18}$ $Mathematical equation: $3.52_{ - 0.17}^{ + 0.18}$$	${22.94}_{- 0.81}^{+ 0.90}$ $Mathematical equation: $22.94_{ - 0.81}^{ + 0.90}$$	${22.40}_{- 1.10}^{+ 1.30}$ $Mathematical equation: $22.40_{ - 1.10}^{ + 1.30}$$	${1.316}_{- 0.049}^{+ 0.055}$ $Mathematical equation: $1.316_{ - 0.049}^{ + 0.055}$$

Notes. 1 – computed assuming zero albedo

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