Direct imaging discovery of a young giant planet orbiting on Solar System scales

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Volume 700 (August 2025)

A&A, 700 (2025) A21

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Table 5

Planet parameters of HD 135344 Ab.

Parameter	Value	Units
a	${16.5}_{- 2.0}^{+ 2.8}$ $16.5_{-2.0}^{+2.8}$	au
e	${0.5}_{- 0.2}^{+ 0.2}$ $0.5_{-0.2}^{+0.2}$
i	${73.6}_{- 4.7}^{+ 2.8}$ $73.6_{-4.7}^{+2.8}$	deg
Ω^a	${94.9}_{- 3.1}^{+ 1.8}$ $94.9_{-3.1}^{+1.8}$	deg
ω^b	${8.2}_{- 10.8}^{+ 8.7}$ $8.2_{-10.8}^{+8.7}$	deg
t_p	$65405_{- 1378}^{+ 2026}$ $65405_{-1378}^{+2026}$	MJD
T_eff	$1510_{- 35}^{+ 35}$ $1510_{-35}^{+35}$	K
log g	${4.14}_{- 0.07}^{+ 0.06}$ $4.14_{-0.07}^{+0.06}$	dex
[M/H]	$≳ 0.0$ $$\gtrsim$0.0$	dex
f_sed	$≲ 1.5$ $$\lesssim$1.5$
R_p	${1.60}_{- 0.06}^{+ 0.07}$ $1.60_{-0.06}^{+0.07}$	R_J
A_V	$≲ 0.5$ $$\lesssim$0.5$	mag
Age	$12_{- 4}^{+ 3}$ $12_{-4}^{+3}$	Myr
M_p	${10.0}_{- 1.9}^{+ 1.4}$ $10.0_{-1.9}^{+1.4}$	M_J
T_eff	$1585_{- 73}^{+ 82}$ $1585_{-73}^{+82}$	K
log g	${4.1}_{- 0.1}^{+ 0.1}$ $4.1_{-0.1}^{+0.1}$	dex
R_p	${1.45}_{- 0.03}^{+ 0.06}$ $1.45_{-0.03}^{+0.06}$	R_J

Notes. The listed values are the median and the 16th and 84th percentiles from the posterior distributions. We only accounted for the statistical uncertainties. The lower and upper limits are provided as the 16th and 84th percentile, respectively. ^(a,b)The table includes one solution for ω and Ω, but there is a second solution with an offset of 180 deg. ^(c) The age and planet mass were free parameters, whereas T_eff, R_p, and log g were interpolated from the evolutionary grid based on the posterior samples.

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