Incidence of debris discs around FGK stars in the solar neighbourhood

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Table 3

Summary of stars per spectral type in the DUNES_DU and DUNES_DB samples and frequency of excesses.

	F			G			K			FGK

Sample	T	E	Frequency	T	E	Frequency	T	E	Frequency	T	E	Frequency
			95% interval			95% interval			95% interval			95% interval

≤ 15 pc DUNES_DU	4	2	0.50	19	5	0.26	43	9	0.21	66	16	0.24
			[0.15−0.85]			[0.11−0.49]			[0.11−0.35]			[0.15−0.36]
≤ 20 pc DUNES_DU	19	4	0.21	50	11	0.22	54	10	0.19	123	25	0.20
			[0.08−0.44]			[0.13−0.35]			[0.10−0.31]			[0.14−0.28]
≤ 15 pc DUNES_DB	19	4	0.21	14	2	0.14	6	1	0.17	39	7	0.18
			[0.08−0.44]			[0.03−0.41]			[0.01−0.58]			[0.09−0.33]
≤ 20 pc DUNES_DB	32	8	0.25	16	2	0.13	6	1	0.17	54	11	0.20
			[0.13−0.42]			[0.02−0.37]			[0.01−0.58]			[0.12−0.33]

≤15 pc DUNES_DU+DUNES_DB	23	6	0.26	33	7	0.21	49	10	0.20	105	23	0.22
			[0.12−0.47]			[0.10−0.38]			[0.11−0.34]			[0.15−0.31]
≤20 pc DUNES_DU+DUNES_DB	51	12	0.24	66	13	0.20	60	11	0.18	177	36	0.20
			[0.14−0.37]			[0.12−0.31]			[0.10−0.30]			[0.15−0.27]

≤15 pc Hipparcos	23	6	0.26	42	9	0.21	89	18	0.20	154	33	0.21
			[0.12−0.47]			[0.11 − 0.36]			[0.13 − 0.30]			[0.16 − 0.29]

Notes. “T” and “E” mean “Total” and “Excess”, respectively.

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