Kepler-539: A young extrasolar system with two giant planets on wide orbits and in gravitational interaction

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Table A.1

Starspot parameters derived from the prism+gemc fitting of the transit light curves at cycles −5 and 2.

Cycle	θ(°) ^a	φ(°) ^b	r_spot(°) ^c	ρ_spot ^d

−5	−26.18 ± 3.73	28.31 ± 10.14	36.43 ± 6.80	0.69 ± 0.11
2	18.88 ± 11.79	34.27 ± 8.21	18.60 ± 6.46	0.70 ± 0.28

Notes.

^(a)

The longitude of the centre of the spot is defined to be 0° at the centre of the stellar disc and can vary from −90° to 90°.

^(b)

The co-latitude of the centre of the spot is defined to be 0° at the north pole and 180° at the south pole.

^(c)

Angular radius of the starspot (note that an angular radius of 90° covers half of stellar surface).

^(d)

Spot contrast (note that 1.0 equals the brightness of the surrounding photosphere).

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