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Table B.2

Uncertain cases from the D17+YL19 sample.

KIC No. Kpmag Teff [K] RR Lum. class. Prot [d] No. of flares Remarks
2019477 13.330 5647 2.733 DWARF 2 = KOI-6083 with two planets (1)
3245458 13.795 5980 1.085 DWARF 12-16 9 Blend (2)
3659584 13.045 4595 7.346 GIANT 68.41 1 Large ampl. rot. mod. (3)
4752302 12.687 4811 3.615 GIANT 1 Oscillations (?) Hon et al. (2019)
5093168 13.421 GIANT 2.799 21 Two stars (4)
5961988 14.139 5837 1.115 DWARF 12 Blend (5)
6190679 9.030 4570 15.147 GIANT 76.9 1 Oscillations (?) Hon et al. (2019)
6364525 10.993 5040 2.659 GIANT 5 (6)
6863731 11.611 5104 4.029 GIANT 17 2 Very small ampl., oscill. (?) Hon et al. (2019)
6869726 13.763 4855 1.074 DWARF 0.722 4 Too short period (7)
7272363 13.128 5058 3.833 GIANT 2 Oscillations (?) Hon et al. (2019)
7292720 13.773 4822 4.539 GIANT 1 Oscillations (?) Hon et al. (2019)
8106192 13.373 4763 6.366 GIANT 1 Oscillations (?) Hon et al. (2019)
8112102 13.852 5150 7.691 GIANT 9.45 5 Blend? (8)
9592627 16.955 5150 0.911 DWARF 3.598 1 Small amplitude regular variability (9)
9835672 8.694 4197 33.135 GIANT 1 Oscillations (?) Hon et al. (2019)
10421610 12.990 5826 1.001 DWARF 13.5 134 Looks as a single object, many flares (10)

Notes. (1) Has a close companion of similar brightness (Gaia DR2 2051819028221333120, looks redder), both can flare; (2) measured together with KIC 3245449, an RGB star, 0.7 mag brighter, with oscillations (e.g., Mosser et al. (2014)), the periodograms of both stars shows peaksaround 12–16 days, both could flare; (3) many faint stars around; (4) blended by the dwarf KIC 5093163 (McQuillan et al. 2014), the two rotational periods 2.799 (giant) and 0.402 (dwarf) are clearly seen in the Fourier spectrum, with a 2 mag difference in J (dwarf is fainter), both can flare; (5) blended by the oscillating KIC 5961985, 2 mag brighter (Vrard et al. 2018); (6) bright F-star around, not very near; (7) KIC 6869740 is close, 2 mag brighter, FIII-IV, and pulsates (P = 0.351441); (8) a fainter star very close; (9) 2 mag fainter star nearby, one uncertain flare; (10) Two distinct periods include one at 3.18 days with one sharp signal, and another around 13.5 d, where a number of signals are seen: characteristics typical of pulsation and differential rotation, respectively.

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