Table 2.
Metallicity, reddening, age, and distance of NGC 2477 according to the literature, and the values adopted in this work.
| Determination of metallicity |
|||||||
|---|---|---|---|---|---|---|---|
| Paper | Value | Technique | Spectral | No. | E(B−V) | Age | Distance |
| (dex) | Resolution | Stars | (mag) | (Ga) | (pc) | ||
| Hartwick et al. (1972) | 0.2–0.4 | 1.5 ± 0.2 | |||||
| Hartwick & Hesser (1974) | 0.2–0.4 | 0.9 | |||||
| Geisler et al. (1992) | −0.13 ± 0.18 | PHOT | – | ||||
| Friel & Janes (1993) | −0.05 ± 0.11 | SPEC | 1000 | 7 | 1.3 | ||
| von Hippel et al. (1995) | Solar | 0.3 | 1 ± 0.2 | ||||
| Kassis et al. (1997) | −0.05 ± 0.11 | 0.2–0.4 | 1 |
1300 | |||
| Friel et al. (2002) | −0.13 ± 0.1 | SPEC | 1250 | 28 | 0.29 | 1 | 1260 |
| Bonatto & Bica (2005) | Solar | 0.06 ± 0.03 | 1.1 ± 0.1 | 1200 | |||
| Carraro et al. (2005) | Solar | 0.24 | 0.6 | 1300 | |||
| Bragaglia et al. (2008) | 0.07 ± 0.03 | SPEC | 45 000 | 4 | |||
| Monteiro et al. (2010) | −0.07 | 0.29 ± 0.03 | 0.79 ± 0.2 | 1385 ± 64 | |||
| Jeffery et al. (2011) | 1.035 ± 0.054 | ||||||
| Dias et al. (2012)(a) | 0.118 | 0.29 ± 0.02 | 0.67 ± 0.1 | 1565 ± 103 | |||
| Dias et al. (2012)(b) | 0.118 | 0.27 ± 0.09 | 0.89 ± 0.1 | 1300 ± 117 | |||
| Oliveira et al. (2013) | −0.10 ± 0.12 | 0.31 ± 0.03 | 0.7 ± 0.15 | 1341 ± 106 | |||
| Caffau et al. (2014) | 0.09 ( * ) | SPEC | 47 000 | 4 | |||
| Mishenina et al. (2015) | 0.18 ± 0.11 | SPEC | 47 000 | 5 | |||
| Jeffery (2016) | −0.24 ± 0.04 | 0.27 ± 0.009 | 1.02 ± 0.2 | ||||
| Kunder et al. (2017) | −0.07 ± 0.1 ( * ) | SPEC | 7500 | 55 | |||
| This work | 0.10 ± 0.05 | 0.29 ± 0.05 | 1.0 ± 0.1 | 1444 ± 81 | |||
Notes. Some authors fit isochrones to the full cluster, others use only parts of the cluster. The solar iron abundance values adopted by different authors vary between 7.50 to 7.67. ( * )Metallicity values reported as [M/H] instead of [Fe/H]. PHOT and SPEC imply photometric and spectroscopic measurements, respectively; if blank the value was either fixed from the literature or fitted to isochrones.
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