Table 2
Atmospheric parameters of the AMBRE grid.
| Atmospheric parameter (units) | Minimum | Maximum | Step | Number of possible values | |
|
|
|||||
| Teff (in K) | 2500 | 8000 | 200 | for Teff ≤ 3900 | 25 |
| 250 | for Teff ≥ 4000 | ||||
| log(g) (in cm/s2) | −0.5 | +5.5 | 0.5 | 13 | |
| [M/H] (in dex) | −5.0 | +1.0 | 0.25 | for [M/H] ≥ −1.0 | 15 |
| 0.5 | for −3.0 ≤ [M/H] < −1.0 | ||||
| 1.0 | for [M/H] < −3.0 | ||||
| [α/Fe] (in dex) | −0.4 | +0.8 | 0.2 | 5 for a given [M/H] | |
Notes. A description of the other parameters adopted in the spectra calculation is given in Sects. 2 and 3. We also recall that (i) for each set of (Teff, log(g) [M/H]) values, five spectra with different [α/Fe] enrichments have been computed, and that (ii) some models are missing (approach to the Eddington flux limit and/or poor convergence).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.