Artículo
Multicolor Photometry of Red Giant Candidates in the Southern Open Cluster NGC 2447
Fecha de publicación:
12/2005
Editorial:
Inst Theoretical Physics Astronomy
Revista:
Baltic Astronomy
ISSN:
1392-0049
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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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Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Claria Olmedo, Juan Jose; Piatti, Andres Eduardo; Lapasset Gomar, Emilio; Parisi, Maria Celeste; Multicolor Photometry of Red Giant Candidates in the Southern Open Cluster NGC 2447; Inst Theoretical Physics Astronomy; Baltic Astronomy; 14; 12-2005; 301-311
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