Table 4
Predicted, observed diameters, and geometric characteristics.
| Target | θ V−K | θ K | GEM-FIND | θ UD,8 | FWHM 8 | θ UD,10 | FWHM 10 | θ UD,12 | FWHM 12 | DV−K or DK | D UD,8 | D FWHM,8 | Ratio |
| [mas] | [mas] | [mas] | [mas] | [mas] | [mas] | [mas] | [mas] | [AU] | [AU] | [AU] | |||
|
|
|||||||||||||
| θ Aps | 24 | 18.1a | UD | 40 ± 5 | ... | 85 ±3 | ... | 86 ±5 | ... | 2.0 |
4.6 |
... | 2.24 |
| R Crt | 19 | ... | UD+Gauss | 19 | 38 ± 8 | 19 | 162 ± 28 | 19 | 89 ± 7 | 5.0 |
... | 9.9 |
1.99 |
| R Leo | 25 | ...b | UD+Gauss | 25 | 49 ± 1 | 25 | 50 ± 1 | 25 | 57 ± 1 | 1.8 |
... | 3.5 |
1.96 |
| T Mic | 25 | ... | Gauss | ... | 36 ± 7 | ... | 55 ± 8 | ... | 64 ± 9 | 5.3 |
4.4 |
... | 0.84 |
| RT Vir | 15 | 15c | UD+Gauss | 15 | 28 ± 5 | 15 | 115 ± 15 | 15 | 52 ± 3 | 2.0 |
... | 3.7 |
1.84 |
| π1 Gru | 28 | 21.6d | UD+Gauss | 21.6 | 131 ± 52 | 21.6 | 172 ± 46 | 21.6 | 179 ± 31 | 3.5 |
... | 21.4 |
6.36 |
| omi Ori | 11 | 9.78e | UD+Gauss | 9.78 | 214 ± 21 | 9.78 | 214 ± 22 | 9.78 | 221 ±22 | 1.9 |
... | 42.8 |
21.92 |
| U Ant | 10 | ... | UD | 16 ± 1 | ... | 12 ± 1 | ... | 17 ±1 | ... | 2.7 |
4.2 |
... | 1.56 |
| R Lep | 9 | 12.0f | UD+Gauss | 12 | 29 ± 1 | 12 | 33 ± 2 | 12 | 44 ± 2 | 5.0 |
... | 12.0 |
2.42 |
| Y Pav | 7 | ... | Gauss | ... | 5 ± 1 | ... | 5 ± 2 | ... | 12 ± 1 | 2.8 |
... | 2.1 |
0.76 |
| TX Psc | 11 | ... | UD | 12 ± 1 | ... | 10 ±1 | ... | 12 ± 1 | ... | 3.0 |
3.4 |
... | 1.13 |
| S Sct | 7 | 6.22g | Gauss | ... | 12 ± 1 | ... | 11 ± 2 | ... | 13 ± 3 | 2.4 |
... | 4.5 |
1.89 |
| AQ Sgr | 6 | 6.13h | UD | 17 ± 3 | ... | 20 ± 4 | ... | 33 ± 3 | ... | 2.0 |
5.5 |
... | 2.70 |
| X Tra | 11 | ... | UD | 22 ± 2 | ... | 23 ± 4 | ... | 39 ± 3 | ... | 4.0 |
7.9 |
... | 1.99 |
Notes. A detailed description of the various columns of the table can be found in Sect. 4.5. The diameter of carbon stars showing SiC at 11.3 μm is usually comparable to that measured at 8 μm or 12 μm, depending on the visibility level (see Appendix A).
Adopted from Dumm & Schild (1998).
Several diameters ranging between 11 mas (Mennesson et al. 2002) and 27 mas (Perrin et al. 1999) have been published for R Leo. Given the large range of numbers we decided to stick to the θV−K diameter for our calculations.
Adopted from Sacuto et al. (2008), and recently confirmed by VLTI/PIONIER data (Paladini et al., in prep.).
Adopted from Sacuto et al. (2013).
Adopted from Cruzalèbes et al. (2013b).
Adopted from Richichi et al. (2005).
Adopted from Richichi et al. (2005).
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