Detection and characterisation of 54 massive companions with the SOPHIE spectrograph - Seven new brown dwarfs and constraints on the brown dwarf desert

F. Kiefer; G. Hébrard; J. Sahlmann; S. G. Sousa; T. Forveille; N. Santos; M. Mayor; M. Deleuil; P. A. Wilson; S. Dalal; R. F. Díaz; G. W. Henry; J. Hagelberg; M. J. Hobson; O. Demangeon; V. Bourrier; X. Delfosse; L. Arnold; N. Astudillo-Defru; J.-L. Beuzit; I. Boisse; X. Bonfils; S. Borgniet; F. Bouchy; B. Courcol; D. Ehrenreich; N. Hara; A.-M. Lagrange; C. Lovis; G. Montagnier; C. Moutou; F. Pepe; C. Perrier; J. Rey; A. Santerne; D. Ségransan; S. Udry; A. Vidal-Madjar

doi:10.1051/0004-6361/201935113

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Volume 631 (November 2019)

A&A, 631 (2019) A125

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Table 1

HIPPARCOS double star catalogue orbital solution for HD 193554, including estimation of the inclination I_c.

Parameters	Values
P_HIP [day]	832 ± 50
T_HIP [JD]	48 574 ± 51
e_HIP	0.33 ± 0.14
ω_HIP [°]	147 ± 39
I_c [°]	36 ± 11
Ω [°]	98 ± 21
a_ph [mas]	15.0 ± 1.5

P_RV [day]	708.60 ± 0.29
T_RV [JD]	56 564.9 ± 1.6
e_RV	0.3093 ± 0.0022
ω_RV [°]	140.12 ± 0.64
f(m) [10⁻⁶ M_⊙]	4870 ± 77
M₂ sini [M_J]	181.6 ± 5.8
a₁ sini [mas]	7.78 ± 0.86

M₂ [M_J]	309 ± 82

Notes. This allows us to derive the true mass of the companions out of RV results here recalled for comparison.

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