Table 3
Atmosphere parameters and best-fit Rb pseudo-dynamical abundances for the listed wind parameters Ṁ and β.
| IRAS name | Teff (K) | log g | β | Ṁ (M⊙ yr-1) | vexp(OH) (km s-1) | [Rb/Fe]static | [Rb/Fe]dyn | [Zr/Fe]dyn |
|
|
||||||||
| 01085+3022 | 3000* | −0.5 | 0.2 | 1.0 × 10-7 | 13 | 2.0 | 0.6 | ≤0.0 |
| 04404−7427 | 3000 | −0.5 | 0.2 | 1.0 × 10-7 | 8 | 1.3 | 0.1 | ≤0.0 |
| 05027−2158 | 2800 | −0.5 | 0.4 | 1.0 × 10-7 | 8 | 0.4 | −0.7 | ≤+0.5 |
| 05098−6422 | 3000 | −0.5 | 1.4 | 1.0 × 10-8 | 6 | 0.1 | −0.2 | ≤+0.25 |
| 05151+6312 | 3000 | −0.5 | 1.0 | 1.0 × 10-8 | 15 | 2.1 | 1.3 | ≤+0.25 |
| 06300+6058 | 3000 | −0.5 | 0.2 | 1.0 × 10-7 | 12 | 1.6 | 0.4 | ≤0.0 |
| 07222−2005 | 3000 | −0.5 | ... | ... | 8 | 0.6 | ... | ... |
| 09194−4518 | 3000 | −0.5 | ... | ... | 11 | 1.1 | ... | ... |
| 10261−5055 | 3000 | −0.5 | 0.2 | 1.0 × 10-9 | 4 | <−1.0 | <−1.1 | ≤+0.25 |
| 14266−4211 | 2900 | −0.5 | 0.2 | 5.0 × 10-8 | 9 | 0.9 | 0.1 | ≤0.0 |
| 15193+3132 | 2800 | −0.5 | 1.6 | 1.0 × 10-9 | 3 | −0.3 | −0.5 | ≤0.0 |
| 15576−1212 | 3000 | −0.5 | 0.2 | 1.0 × 10-8 | 10 | 1.5 | 1.0 | ≤0.0 |
| 16030−5156 | 3000 | −0.5 | 0.2 | 1.0 × 10-8 | 10 | 1.3 | 0.6 | ≤+0.25 |
| 16037+4218 | 2900 | −0.5 | 1.2 | 1.0 × 10-8 | 4 | 0.6 | 0.2 | ≤+0.25 |
| 17034−1024 | 3300 | −0.5 | 0.8 | 1.0 × 10-8 | 8 | 0.2 | −0.7 | ≤0.0 |
| 18429−1721 | 3000 | −0.5 | 0.2 | 1.0 × 10-8 | 7 | 1.2 | 0.9 | ≤+0.25 |
| 19059−2219 | 3000 | −0.5 | 0.2 | 1.0 × 10-7 | 13 | 2.3 | 0.5 | ≤+0.25 |
| 19426+4342 | 3000 | −0.5 | ... | ... | 9 | 1.0 | ... | ... |
| 20052+0554 | 3000* | −0.5 | 0.2 | 5.0 × 10-7 | 16 | 1.5 | 0.0 | ≤0.0 |
| 20077−0625 | 3000 | −0.5 | ... | ... | 12 | 1.3 | ... | ... |
| 20343−3020 | 3000 | −0.5 | 1.2 | 1.0 × 10-9 | 8 | 0.9 | 0.7 | ≤0.0 |
Notes. The asterisks indicate that the best fitting Teff in the ZrO 6474 Å spectral region is warmer (3300 K) than the one around the Rb I 7800 Å line (García-Hernández et al. 2006, 2007). We have checked the sensitivity of the derived abundances to small changes in the model atmosphere parameters (ΔTeff = ± 100 K, Δβ = 0.2, Δlog (Ṁ/M⊙ yr-1) = 0.5, Δvexp(OH)= 5 km s-1). The dominant sources of uncertainties are Ṁ and Teff for Rb and Zr, respectively, which result in error bars of ±0.7 and ±0.3 dex, respectively. In the hydrostatic case, the formal Rb uncertainties (quoted by García-Hernández et al. 2006) due to changes of all the atmosphere parameters are ±0.8 dex.
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