Magnetic field topology of the cool, active, short-period binary system σ2 Coronae Borealis

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Table 1

Orbital parameters of σ² CrB derived in this study.

Parameter	Value
P_orb (d)	1.13979045 ± 0.00000008
(HJD)	2450127.6204 ± 0.0004
(HJD)	2450127.9054 ± 0.0004
K_p (km s⁻¹)	61.366 ± 0.097
K_s (km s⁻¹)	63.106 ± 0.098
γ (km s⁻¹)	− 12.983 ± 0.106
a_p sini (R_⊙)	1.383 ± 0.002
a_s sini (R_⊙)	1.422 ± 0.002

Notes. Orbit is assumed to be circular. The parameter corresponds to the epoch of maximumprimary velocity and corresponds to the conjunction epoch when the secondary is in front of the primary.

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