CPD-54 810

The format of the disentangled spectra is suitable for use with iSpec.

The 5 original FEROS spectra are included in the zip file. As can be seen, these are spectra are quite noisy and badly affected by outliers in a some wavelength regions. Several post-processing steps were required to obtain a consistent normalisation between the spectra so there are some regions where the flux ratio may not be very accurate (see note on disentangling). The disentangling process is quite sensitive to outliers so some line profiles may be badly distorted by an outlier in one of the input spectra. It is recommended to check the raw spectra if you are not able to get a good fit to some of the spectral features or find strange abundances based on only a few lines.

The format of the raw data is described here. These spectra can also be read directly into iSpec, but the wavelength scale is Å so remember to apply the mathematical expression waveobs/10 to get wavelengths in nm.

CPD-54 810 A, F5 IV

• T_eff = 6462 ± 43 K
• log g (cgs) = 3.984 ± 0.001
• Mass = 1.309 ± 0.005 M_⊙
• Radius = 1.929 ± 0.003 R_⊙
• [Fe/H] ≈ −0.0 ± 0.2

CPD-54 810 B, F6 V

• T_eff = 6331 ± 43 K
• log g (cgs) = 4.330 ± 0.003
• Mass = 1.090 ± 0.003 M_⊙
• Radius = 1.182 ± 0.004 R_⊙

Photometry

N.B. Magnitudes for both stars in other photometric bands can be estimated from the analysis described in Miller et al. (2022). This will take some effort, but can be done if someone can make good use of the results.

References

• Miller et al., 2022