Table 4
Comparison between photometric and spectroscopic atmospheric parameters.
| Calibration | T eff | log g |
| [K] | ||
|
|
||
| Moon & Dworetsky (1985) | 22 254 | 4.30 |
| Balona (1994) | 21 383 | 4.40 |
| Napiwotzki et al. (1993) | 21 847 | 4.55 |
| Castelli et al. (1997) | 20 951 | 4.67 |
|
|
||
| This work | 22 000 | 4.2 |
| ±1000 | ±0.1 | |
Notes. Effective temperature and surface gravity derived from Strömgren photometry (Hauck & Mermilliod 1997) for HD 47777 and using calibrations from Moon & Dworetsky (1985), Balona (1994), Napiwotzki et al. (1993), and Castelli et al. (1997). The last two lines list the Teff and log g values derived from the ESPaDOnS spectrum in this work.
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