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Table A.1
Description of columns in the table of FEROS stellar parameters delivered to ESO.
| Keyword | Definition | Value range | Null value | Determination |
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| DP_ID | ESO data set identifier | |||
| OBJECT | Object designation as read in ORIGFILE | |||
| TARG_NAME | Target designation as read in ORIGFILE | |||
| RAJ2000 | Telescope pointing (right ascension, J2000) | deg | ||
| DEJ2000 | Telescope pointing (declination, J2000) | deg | ||
| MJD_OBS | Start of observation date | Julian Day | ||
| EXPTIME | Total integration time | sec | ||
| SNR | Signal-to-noise ratio as estimated by the pipeline | 0-∞ | NaN | |
| SNR_FLAG | Signal-to-noise ratio quality flag | C, R | C = Crude estimate from SPA*, R = Refined estimate from SPC# | |
| EXTREME_EMISSION_LINE_FLAG | Detection of extreme emission lines. | T, F | T = True: detection therefore no analysis carried out, | |
| F = False: no detection therefore analysis carried out | ||||
| EMISSION_LINE_FLAG | Detection of some emission lines | T, F | T = True: some emission lines detected but analysis carried out, | |
| F = False: no detection therefore analysis carried out | ||||
| MEANFWHM_LINES | Mean FWHM of absorption lines around 4500 Å | 0–0.33 | NaN | FWHM measured from spectral features (mÅ) |
| MEANFWHM_LINES_FLAG | Flag on the mean FWHM | T, F | T = True: FWHM > 0.33 or < 0.11. Default FWHM values used | |
| F = False: FWHM < 0.33, > 0.11 | ||||
| VRAD | Stellar radial velocity | –500 to +500 | NaN | Units = km s-1 |
| ERR_VRAD | Error on the radial velocity | 0-∞ | NaN | If σvrad > 10, null value used for all stellar parameters. Units = km s-1 |
| VRAD_CCF_FWHM | FWHM of the CCF between the spectrum and the binary mask | 0-∞ | NaN | Units = km s-1 |
| VRAD_FLAG | Quality flag on the radial velocity analysis | 0, 1, 2, 3, 4, 5 | –99 | 0 = Excellent determination ... 5 = Poor determination |
| TEFF | Stellar effective temperature (Teff) | 3000–7625 | NaN | Units = K. Null value used if Teff is outside accepted parameter |
| as estimated by the pipeline | limits or if the spectrum is rejected due to quality flags. | |||
| ERR_INT_TEFF | Effective temperature internal error | 0-∞ | NaN | Units = K. Square root of quadrature sum of internal errors |
| (σ(Teff)int,snr, σ(Teff)int,vrad & σ(Teff)int,norm | ||||
| ERR_EXT_TEFF | Effective temperature external error | 120 | NaN | Units = K. Maximum expected error due to external sources |
| LOG_G | Stellar surface gravity (log g) as estimated by the pipeline | 1–4.9 | NaN | Units = dex. Null value used if log g is outside accepted parameter |
| limits or if the spectrum is rejected due to quality flags. | ||||
| ERR_INT_LOG_G | Surface gravity internal error | 0-∞ | NaN | Units = dex. Square root of quadrature sum of internal errors |
| (σ(log g)int,snr, σ(log g)int,vrad & σ(log g)int,norm | ||||
| ERR_EXT_LOG_G | Surface gravity external error | 0.2 | NaN | Units = dex. Maximum expected error due to external sources |
| M_H | Mean metallicity [M/H] as estimated by the pipeline | 0-∞ | NaN | Units = dex. Null value used if [M/H] is outside accepted parameter |
| limits or if the spectrum is rejected due to quality flags. | ||||
| ERR_INT_M_H | Mean metallicity internal error | 0-∞ | NaN | Units = dex. Square root of quadrature sum of internal errors |
| (σ( [M/H ] )int,snr, σ( [M/H ] )int,vrad and σ( [M/H ] )int,norm | ||||
| ERR_EXT_M_H | Mean metallicity external error | 0.1 | NaN | Units = dex. Maximum expected error due to external sources |
| ALPHA | α-elements over iron enrichment ([α/Fe]) | –0.4–0.4 | NaN | Units = dex. Null value used if [α/Fe] is outside accepted parameter |
| as estimated by the pipeline | limits or if the spectrum is rejected due to quality flags. | |||
| ERR_INT_ALPHA | α-elements over iron enrichment internal error | 0-∞ | NaN | Units = dex. Square root of quadrature sum of internal errors |
| (σ( [α/Fe ] )int,snr, σ( [α/Fe ] )int,vrad and σ( [α/Fe ] )int,norm | ||||
| ERR_EXT_ALPHA | α-elements over iron enrichment external error | 0.1 | NaN | Units = dex. Maximum expected error due to external sources |
| CHI2 | log(χ2) of the fit between the observed and the | 0-∞ | NaN | Goodness of fit between final normalised |
| reconstructed synthetic spectrum at the MATISSE parameters | and final reconstructed spectra | |||
| CHI2_FLAG | Quality flag on the fit between the observed and the | 0, 1, 2 | –99 | 0 = Good fit ... 2 = Poor fit |
| reconstructed synthetic spectrum at the MATISSE parameters | ||||
| ORIGFILE | ESO filename of the original spectrum being analysed | |||
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