Table 3
Parameter metallicity obtained for the clusters investigated with the cross-entropy method.
| This work | |||||
| Cluster | [Fe/H] | Literature code | TEC code | [Fe/H] | Ref. |
|
|
|||||
| NGC 2477 | 0.07 ± 0.03 | R01 | SPEC | –0.10 ± 0.12 | 152 |
| –0.03± 0.07 | R03 | PHOT | |||
| –0.008 | R07 | PHOT | |||
| –0.13± 0.18 | R08 | PHOT | |||
| –0.34± 0.07 | R09 | PHOT | |||
| –0.05± 0.11 | R10 | SPEC | |||
| 0.04± 0.01 | R11 | SPEC | |||
| 0.019± 0.115 | R12 | SPEC | |||
| 0.05 | R13 | PHOT | |||
| 0.07± 0.03 | R28 | SPEC | |||
| NGC 7044 | -0.16 ± 0.09 | R14 | SPEC | 0.04 ± 0.10 | 62 |
| 0.0 ± 0.2 | R27 | PHOT | |||
| 0.01 | R13 | PHOT | |||
| 0.01± 0.10 | R03 | PHOT | |||
| NGC 2266 | –0.26 ± 0.02 | R02 | PHOT | –0.32 ± 0.14 | 41 |
| –0.26 ± 0.2 | R03 | PHOT | |||
| –0.38 ± 0.06 | R15 | SPEC | |||
| Berkeley 32 | -0.29 ± 0.04 | R01 | SPEC | –0.38 ± 0.11 | 40 |
| –0.42 ± 0.09 | R03 | PHOT | |||
| –0.37 ± 0.05 | R16 | PHOT | |||
| –0.3 ± 0.02 | R17 | SPEC | |||
| –0.37 ± 0.04 | R18 | PHOT | |||
| –0.55 | R13 | PHOT | |||
| NGC 2682 | 0.03 ± 0.02 | R04 | SPEC | 0.0 ± 0.18 | 335 |
| –0.029 | R07 | PHOT | 0.04 ± 0.10 | 31 | |
| –0.04± 0.03 | R03 | PHOT | 0.04 ± 0.10 | 54 | |
| –0.05 ± 0.03 | R19 | PHOT | |||
| –0.06 ± 0.07 | R20 | PHOT | |||
| –0.05 ± 0.04 | R18 | PHOT | |||
| –0.01 ± 0.11 | R21 | PHOT | |||
| 0.000 ± 0.092 | R12 | PHOT | |||
| –0.11 | R13 | PHOT | |||
| –0.09 ± 0.07 | R10 | SPEC | |||
| –0.01 ± 0.05 | R06 | SPEC | |||
| NGC 2506 | –0.2 ± 0.02 | R05 | SPEC | –0.13 ± 0.16 | 284 |
| –0.51 ± 0.1 | R03 | PHOT | –0.13 ± 0.16 | 163 | |
| –0.19 ± 0.06 | R22 | SPEC | |||
| –0.24 ± 0.05 | R23 | SPEC | |||
| –0.44 ± 0.06 | R24 | SPEC | |||
| –0.58 ± 0.14 | R08 | PHOT | |||
| –0.52 ± 0.07 | R10 | SPEC | |||
| –0.57 | R25 | PHOT | |||
| –0.48 ± 0.08 | R21 | PHOT | |||
| –0.58 | R13 | PHOT | |||
| –0.368 ±0.108 | R12 | PHOT | |||
| NGC 2355 | –0.08 ± 0.08 | R06 | SPEC | –0.32 ± 0.14 | 217 |
| 0.02±0.2 | R03 | PHOT | –0.23 ± 0.24 | 44 | |
| 0.13 | R26 | PHOT | |||
| Melotte 105 | 0.0 | R13 | PHOT | –0.05 ± 0.15 | 289 |
| 0.0 ± 0.1 | R03 | PHOT | 0.00 ± 0.21 | 32 | |
| Trumpler 1 | –0.71 | R13 | PHOT | 0.10 ± 0.13 | 320 |
| –0.71 ± 0.1 | R03 | PHOT | 0.15 ± 0.10 | 86 | |
Notes. In the first column we list the cluster identification, the second column shows the metallicities obtained from the literature for the investigated clusters, and the third column presents the literature codes. In the column TEC we give the technique of data acquisition used for [Fe/H] determination, named SPEC for spectroscopy and PHOT for photometry. The last two columns present the metallicity values obtained in this work and the reference code for the data used from the WEBDA catalog. See the text for error estimates details. The TEC codes are R01, R04, R17, R22, and R28 used the data from high-resolution spectroscopy; R03 used unweighted averaged [Fe/H] values from the literature; R05, R06, R10, R11, R12, R14, R15, R23 and R24 used the data from high-, moderate- or low-resolution spectroscopy; R07, R09, R16, R18, R19, R20, R25, R26 and R27 used values from color-magnitude isochrone fits; R02, R08 and R16 used values from Washington photometry; R13 used UV excesses techniques (δ(U − B)0.6); R12, R19 and R20 used values from DDO photometry, and R21 used recalibrated values from Piatti et al. (1995). Literature code: R01 = Sestito et al. (2006); R02 = Kaluzny & Mazur (1991b); R03 = Pöhnl & Paunzen (2010); R04 = Randich et al. (2006); R05 = Carretta et al. (2004); R06 = Jacobson et al. (2011); R07 = Cameron (1985); R08 = Geisler et al. (1992); R09 = Jeffery et al. (2011); R10 = Friel & Janes (1993); R11 = Smith & Hesser (1983); R12 = Twarog et al. (1997); R13 = Tadross (2003); R14 = Warren & Cole (2009); R15 = Carrera (2012); R16 = Kaluzny & Mazur (1991a); R17 = Carrera & Pancino (2011); R18 = Noriega-Mendoza & Ruelas-Mayorgo (1997); R19 = Janes & Smith (1984); R20 = Nissen et al. (1987); R21 = Piatti et al. (1995); R22 = Reddy et al. (2012); R23 = Mikolaitis et al. (2011); R24 = Friel et al. (2002); R25 = McClure et al. (1981); R26 = Kaluzny & Mazur (1991c); R27 = Aparicio et al. (1993); R28 = Bragaglia et al. (2008).
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