Table 3
List of debris-disk candidates with the AKARI 18 μm excess emission (the 2MASS based sample).
| Star name | IRC name | Spectral | Distance | Age | F18,obs$ | F18, ∗ $ | Excess | References |
| type | (pc) | (Gyr) | (Jy) | (Jy) | ratio$ | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
|
|
||||||||
| HD 9186 | 0132297+675740 | (B9) | 300 ± 80 | – | 0.341 | 0.00775 | 43∗‡ | g |
| HD 9672 | 0134378-154034 | A1V | 61 ± 3 | – | 0.197 | 0.0873 | 1.26 | a, g, h |
| HD 16485 | 0240209+493337 | B9V | 500 ± 200 | – | 0.191 | 0.0481 | 2.97 | g |
| HD 26912 | 0415320+085332 | B3V (B3IV) | 130 ± 20 | – | 0.351 | 0.205 | 0.708 | a, g |
| HD 28375 | 0428321+012250 | (B3V) | 120 ± 20 | – | 0.570 | 0.0586 | 8.73‡ | a, g |
| HD 32509 | 0504500+264315 | (A2e) | 150 ± 30 | – | 0.256 | 0.0223 | 10.5‡ | a, g |
| HD 34890 | 0520289-054843 | (A0) | 180 ± 50 | – | 0.166 | 0.00638 | 25 | g |
| HD 36546 | 0533307+243743 | (B8) | 100 ± 10 | – | 0.684 | 0.0252 | 26.1 | g |
| HD 39415 | 0554415+443007 | F5V | – | – | 0.271 | 0.0197 | 12.7 | a, h |
| HD 44892 | 0623427-162801 | (A9/F0IV) | 160 ± 20 | – | 0.580 | 0.0742 | 6.82 | a, g, h |
| HD 64145 | 0753297+264556 | A3V | 78 ± 6 | – | 0.300 | 0.183 | 0.641 | h |
| HD 65372 | 0758303+025609 | (A3) | 240 ± 50 | – | 0.743 | 0.0452 | 15.4 | a, g |
| HD 75416 | 0841193-785747 | B8V† | 97 ± 4 | – | 0.165 | 0.0604 | 1.73 | f, g |
| HD 93942 | 1049236-584703 | A1V | – | – | 34.4 | 0.00279 | 12300∗ | b |
| HD 102323 | 1146229-562242 | (A2IV) | 400 ± 200 | – | 0.378 | 0.00646 | 57.6∗ | a, g |
| HD 105209 | 1206526-593529 | A1V | – | – | 0.234 | 0.0212 | 10.1 | a, b, h |
| HD 118978 | 1342010-584712 | (B9III) | 200 ± 30 | – | 0.339 | 0.0898 | 2.78‡ | a, g |
| HD 120780 | 1352354-505518 | K3V (K0V) | 16.4 ± 0.3 | – | 0.199 | 0.123 | 0.61 | |
| HD 121617 | 1357411-470035 | A1V | – | – | 0.321 | 0.0185 | 16.4 | h |
| HD 145263 | 1610551-253122 | F0V | 120 ± 20 | – | 0.481 | 0.0106 | 44.6∗ | g, h |
| HD 146055 | 1615080-243518 | B9V† | – | – | 0.172 | 0.0196 | 7.78 | |
| HD 155401 | 1712251-274544 | B9V(N) | 170 ± 20 | – | 0.412 | 0.0429 | 8.61 | a, g |
| HD 165014 | 1804432-205643 | F2V | – | – | 0.948 | 0.0269 | 34.3∗ | b, h |
| HD 166191 | 1810303-233401 | F3/5V (F4V) | 140 ± 30 | – | 2.44 | 0.0236 | 102∗ | a, b, h |
| HD 167905 | 1818182-232819 | F3V | – | – | 1.75 | 0.0317 | 54.2∗ | a, b, h |
| HD 169666 | 1819080+713104 | (F5) | 51 ± 1 | 2.0 ± 0.7(1), 2.0(3) | 0.128 | 0.0801 | 0.604 | g |
| HD 187748 | 1948154+592523 | (G0) | 28.4 ± 0.4 | 3.2(3) | 0.197 | 0.115 | 0.718 | |
| HD 215592 | 2245380+415258 | (A0) | 600 ± 300 | – | 0.332 | 0.00953 | 33.9∗ | g |
| HD 222173 | 2338082+431604 | B8V† | 150 ± 20 | – | 0.256 | 0.159 | 0.611 | g |
| HD 225132 | 0003444-172009 | (B9IVn) | 70 ± 4 | – | 0.303 | 0.182 | 0.662 | g |
| HD 279128 | 0352162+332422 | (B8) † | 300 ± 100 | – | 0.362 | 0.0232 | 14.6 | g |
Notes. Column (1): HD name. Col. (2): Source ID in the AKARI mid-IR PSC. Col. (3): Spectral type quoted from the Tycho-2 spectral type catalog (Wright et al. 2003). The definition in the SIMBAD database is written in parenthesis if it is different from that in the Tycho-2 spectral type catalog. Col. (4): Distance (pc) converted from the parallax in the Hipparcos catalog (Perryman et al. 1997). Col. (5): Stellar age quoted from the literature. References are: (1) Chen et al. (2001) is based on the lithium abundances, (2) Feltzing et al. (2001), and (3) Holmberg et al. (2009). Col. (6): AKARI 18 μm flux. Col. (7): Predicted flux of photosphere at 18 μm. Col. (8): Excess ratio calculated as (F18,obs−F18, ∗) /F18, ∗. Col. (9): References for the excess detection are: (a) Oudmaijer et al. (1992), (b) Clarke et al. (2005), (c) Rieke et al. (2005), (d) Bryden et al. (2006), (e) Trilling et al. (2008), (f) Su et al. (2006), (g) McDonald et al. (2012), (h) Fujiwara et al. (2013).
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