Constraining nearby sub-stellar companion architectures using high-contrast imaging, radial velocity, and astrometry

Open Access

Table 4

Summary of the astrometric measurements from Kervella et al. (2021) for the four targets present in both the HIPPARCOS and Gaia EDR3 catalogues.

Target	Gaia DR3 ID	HIPPARCOS ID	Δ v_T,GDR3 ^(a) (ms⁻¹)	r_orb for δt_GDR3 ^(b) (AU)
GJ 1125	3840711729206820000	46 655	18.7 ± 7.3	1.36
GJ 367	5412250540681250560	47 780	21.13 ± 5.55	1.56
GJ 382	3828238392559860992	49 986	3.78 ± 2.33	1.62
GJ 3325	2976850598890749824	23 512	1.2 ± 3.5	1.31
GJ 402	3864615459886222464	53 020	2.9 ± 4.1	1.309
GJ 465	3519785523672576384	60 559	2.1 ± 4.0	1.29
GJ 357	5664814198431308288	47 103	1.6 ± 3.2	1.42

Notes. ^(a)Norm of the tangential PMa vector converted to linear velocity using the Gaia EDR3 parallax. ^(b)Radius of an orbit with period corresponding to the Gaia DR3 observing window δt_GDR3 = 1038d given the stellar mass of the target.

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