Warm and cool starspots with opposite polarities - A high-resolution Zeeman-Doppler-Imaging study of II Pegasi with PEPSI

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Table 1

Astrophysical properties of II Peg.

Parameter	Value	Based on
Classification, MK	K2 IV	Various
Effective temperature, K	4750	Rosén et al. (2015)
Log gravity, cgs	3.5	Rosén et al. (2015)
v sin i, km s⁻¹	21.6 ± 0.5	This paper
Microturbulence, km s⁻¹	2.0	Rosén et al. (2015)
Macroturbulence, km s⁻¹	3.6	This paper
Rotation period, d	6.7242078	=orbital period
Inclination, deg	60 ± 10	This paper
Metallicity, [Fe/H]_⊙	−0.25	Rosén et al. (2015)
Distance, pc	39.36 ± 0.06	Gaia DR-2
Radius, R_⊙	1.87 ± 0.08	From π, T_eff, V_max
	3.3	From v sin i, i, P_rot

Notes. π parallax, T_eff effective temperature, V_max maximum brightness in Johnson V; v sin i projected rotational velocity, i inclination of the rotation axis with respect to the sky plane, P_rot rotation period.

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