Determining the mass of the planetary candidate HD 114762 b using Gaia

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Volume 632 (December 2019)

A&A, 632 (2019) L9

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Table 4.

Results of the mass and inclination determination of HD 114762 b with GASTON.

Parameters	Median	1σ confidence interval
P [days]	83.915	83.912 − 83.918
e_b	0.566	0.555 − 0.578
ω [°]	201.3	200.3 − 202.3
ΔT_p [JD]	−0.0017	−0.1879 − 0.1861
M_b sin i [M_J]	10.72	10.33 − 11.10
M_⋆ [M_⊙]	0.80	0.76 − 0.84
π [mas]	25.90	25.45 − 26.35
f_ϵ^(a)	1.00	0.90 − 1.10
σ_jitter [m s⁻¹] ^(a)	3.06	0.98 − 5.09
I_c [°]	4.87	3.96 − 5.98
M_b [M_J]	141	113 − 176
a_ph [mas] ^(b)	1.35	1.12 − 1.63
ΔV^(c)	8.6	7.6 − 9.6
Δμ [mas yr⁻¹] ^(d)	1.21	0.60 − 2.07

Accounting for HD 114762 B
I_c [°]	6.20	4.90 − 8.10
M_b [M_J]	108	82 − 139
a_ph [mas]	1.07	0.83 − 1.33
ΔV	9.8	8.6 − 11.3
Δμ [mas yr⁻¹]	1.00	0.49 − 1.75

Notes.

The final results on I_c, M_b, a_ph, ΔV, and Δμ that account for the presence of HD 114762 B are given at the bottom of the table (see also Sect. 4).

^(a)

f_ϵ and σ_jitter are the scaling factor and RV jitter term for the uncertainties of ϵ² and K, as explained in the appendix.

^(b)

Photocenter semi-major axis (see K19 for definition).

^(c)

The estimated magnitude difference between HD 114762 A and HD 114762 b in the optical band.

^(d)

The proper motion amplitude fit on the simulated Gaia data.

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