Multicolor Photometry of Red Giant Candidates in the Southern Open Cluster NGC 2447
Photoelectric photometry in the UBV, DDO and Washington systems is presented for 14 late-type giant candidates of the southern open cluster NGC 2447. By applying two independent photometric criteria, nine stars are found to have a high probability of being cluster giants. The photometric membership...
| Authors: | , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2005 |
| Country: | Argentina |
| Institution: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repository: | CONICET Digital (CONICET) |
| Language: | English |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/81808 |
| Online Access: | http://hdl.handle.net/11336/81808 |
| Access Level: | Open access |
| Keyword: | https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Summary: | Photoelectric photometry in the UBV, DDO and Washington systems is presented for 14 late-type giant candidates of the southern open cluster NGC 2447. By applying two independent photometric criteria, nine stars are found to have a high probability of being cluster giants. The photometric membership results are in good agreement with those derived from published Coravel radial velocities. The mean interstellar reddening E<sub>B-V</sub> = 0.05±0.04 has been derived from the confirmed cluster giants. NGC 2447 has a mean ultraviolet excess <δ (U-B)> = 0.01±0.02 (σ <sub>n</sub>) with respect to solar composition K giants, and a mean cyanogen anomaly <Δ CN> = 0.01±0.02 (σ <sub>n</sub>), both implying a small metal deficiency ([Fe/H] ≃ -0.1). Five independent Washington abundance indices yield a mean cluster metallicity of [Fe/H] = -0.09±0.06, in agreement with the two previous estimates. Therefore, NGC 2447 is found to be slightly metal-poor. |
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