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Table 1
Summary of debris disk survey at 18 μm.
Spectral | Input | 18 μm-detected | Excess | Debris | Apparent | 18 μm sources | Debris candidates | Debris disk | |
type | sources | sources | sources | candidates | frequency | w/ detectable | w/ detectable | frequency | |
(%) | photosphere | photosphere | (%) | ||||||
|
|||||||||
A | 18 232 | 196 | 21 | 11 | 5.6 ± 1.6 | 178 | 4 | 2.1 ± 1.1 | |
F | 29 766 | 324 | 12 | 10 | 3.1 ± 1.0 | 311 | 3 | 1.0 ± 0.6 | |
G | 14 013 | 173 | 3 | 2 | 1.2 ± 0.8 | 169 | 2 | 1.2 ± 0.8 | |
K | 2122 | 144 | 2 | 1 | 0.7 ± 0.7 | 144 | 0 | 0.0 | |
M | 76 | 19 | 4 | 0 | 0.0 | 19 | 0 | 0.0 | |
|
|||||||||
Total | 64 209 | 856 | 42 | 24 | 2.8 ± 0.6 | 830 | 9 | 1.1 ± 0.4 |
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