Cold giant discoveries from a joint radial-velocity and astrometry framework - EMPEROR II – Jupiter analogues around metal-rich CHEPS stars

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Table 3

HIP 21850 joint RV+astrometry parameter estimates.

Parameter	Prior	Wittenmyer et al. (2017b)	Feng et al. (2022)	This work
P₁ (days)	~U(1, 20 000)	2524.4±9.8	${2514.5}_{- 4.3}^{+ 5.2}$ $Mathematical equation: $2514.5^{+5.2}_{-4.3}$$	$2539_{- 3}^{+ 1}$ $Mathematical equation: $2539^{+1}_{-3}$$
K₁ (m s^-1)	~U(0+, 200)	126.3±1.5	${128.9}_{- 2.2}^{+ 2.4}$ $Mathematical equation: $128.9^{+2.4}_{-2.2}$$	${124.1}_{- 1.0}^{+ 1.4}$ $Mathematical equation: $124.1^{+1.4}_{-1.0}$$
e₁	~N(0, 0.3)	0.184±0.012	${0.207}_{- 0.017}^{+ 0.012}$ $Mathematical equation: $0.207^{+0.012}_{-0.017}$$	${0.186}_{- 0.004}^{+ 0.002}$ $Mathematical equation: $0.186^{+0.002}_{-0.004}$$
I₁ °$	~I(0, 180)	–	${85.39}_{- 18.74}^{+ 14.35}$ $Mathematical equation: $85.39^{+14.35}_{-18.74}$$	${65.5}_{- 4.2}^{+ 1.7}$ $Mathematical equation: $65.5^{+1.7}_{-4.2}$$
a₁ AU	–	3.58±0.01	${3.60}_{- 0.15}^{+ 0.14}$ $Mathematical equation: $3.60^{+0.14}_{-0.15}$$	${3.49}_{- 0.14}^{+ 0.18}$ $Mathematical equation: $3.49^{+0.18}_{-0.14}$$
M_p1 M_J	–	–	${8.40}_{- 0.49}^{+ 1.24}$ $Mathematical equation: $8.40^{+1.24}_{-0.49}$$	${8.25}_{- 0.85}^{+ 1.05}$ $Mathematical equation: $8.25^{+1.05}_{-0.85}$$

P₂ (days)	~U(1, 20 000)	11 613±1837	${12 085}_{- 441}^{+ 583}$ $Mathematical equation: $12 085^{+583}_{-441}$$	${11 320}_{- 940}^{+ 490}$ $Mathematical equation: $11 320^{+490}_{-940}$$
K₂ (m s^-1)	~U(0+, 200)	70.80±29.50	${54.47}_{- 3.99}^{+ 5.17}$ $Mathematical equation: $54.47^{+5.17}_{-3.99}$$	${41.03}_{- 2.93}^{+ 1.60}$ $Mathematical equation: $41.03^{+1.60}_{-2.93}$$
e₂	~N(0, 0.3)	0.22±0.14	${0.04}_{- 0.01}^{+ 0.01}$ $Mathematical equation: $0.04^{+0.01}_{-0.01}$$	${0.21}_{- 0.02}^{+ 0.01}$ $Mathematical equation: $0.21^{+0.01}_{-0.02}$$
I₂ °	~I(0, 180)	–	${98.02}_{- 24.24}^{+ 16.03}$ $Mathematical equation: $98.02^{+16.03}_{-24.24}$$	${72.7}_{- 5.8}^{+ 17.8}$ $Mathematical equation: $72.7^{+17.8}_{-5.8}$$
a₂ AU	–	9.890±1.040	${10.26}_{- 0.48}^{+ 0.55}$ $Mathematical equation: $10.26^{+0.55}_{-0.48}$$	${9.90}_{- 0.62}^{+ 0.29}$ $Mathematical equation: $9.90^{+0.29}_{-0.62}$$
M_p2 M_J	–	–	${6.15}_{- 0.34}^{+ 1.31}$ $Mathematical equation: $6.15^{+1.31}_{-0.34}$$	${4.67}_{- 0.43}^{+ 0.44}$ $Mathematical equation: $4.67^{+0.44}_{-0.43}$$

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