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Artículo

CCD Washington photometry of ten open clusters or candidates projected close to the galactic plane

Claria Olmedo, Juan JoseIcon ; Parisi, Maria CelesteIcon ; Palma, TaliIcon ; Ahumada, Andrea VeronicaIcon ; Oviedo, Carla GabrielaIcon
Fecha de publicación: 03/2019
Editorial: Copernicus Foundation Polish Astronomy
Revista: Acta Astronomica
ISSN: 0001-5237
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Naturales y Exactas

Resumen

We present high-quality CCD photometry in the Washington system C and T1 passbands down to T1 ≈ 19.5 mag in the fields of ten Galactic open clusters or candidates projected close to the Galactic plane, namely: ESO 313-SC03, BH 54, Ruprecht 87, ESO 129-SC32, BH 217, Collinder 347, Basel 5, Ruprecht 144, Archinal 1 and Berkeley 82. Four of these objects are located toward the Galactic center within a solid angle of 21 ◦ . No photoelectric or CCD photometry in the optical domain has been so far reported for five of these objects. Cluster radii are estimated from radial density profiles in the cluster fields. Using the cluster Washington (C−T1 , T1 ) color-magnitude diagrams, statistically cleaned from field star contamination, we estimate reddening, heliocentric distance and age of the clusters by fitting Padova theoretical isochrones computed for the Washington system. In all cases, the best fittings were obtained with nearly solar metal content isochrones. Both radial density profiles and color-magnitude diagrams show that we are dealing with real open clusters, except for Ruprecht 87 and Archinal 1 that are found to be probably not physical systems. Differential reddening appears to be present across the fields of ESO 313-SC03, ESO 129-SC32, BH 217, Collinder 347 and Basel 5. The studied open clusters are located at d = 1.0−5.0 kpc from the Sun and at Galactocentric distances RGC = 6.0−10.6 kpc, with mean reddening E(B − V ) in the range of 0.10-1.30 mag and ages between 5 Myr (Collinder 347) and ≈ 1000 Myr (Basel 5). The estimated linear cluster radii are in the range of 0.4-3.2 pc. In general terms, the results obtained show fairly good agreement with previous photometric results. In some clusters, however, considerable differences are found between the present results and previous ones determined using near-infrared photometric data. The current study provides new open cluster parameters and some revisions to the open cluster catalogs.
Palabras clave: ARCHINAL1 , BASEL5 , BERKELEY82 - TECHNIQUES: PHOTOMETRIC , BH217 , BH54 , COLLINDER347 , ESO129-SC32 , OPEN CLUSTERS AND ASSOCIATIONS: INDIVIDUAL: ESO313-SC03 , RUPRECHT144 , RUPRECHT87
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/112928
DOI: http://dx.doi.org/10.32023/0001-5237/69.1.1
URL: http://acta.astrouw.edu.pl/Vol69/n1/a_69_1_1.html
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Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Claria Olmedo, Juan Jose; Parisi, Maria Celeste; Palma, Tali; Ahumada, Andrea Veronica; Oviedo, Carla Gabriela; CCD Washington photometry of ten open clusters or candidates projected close to the galactic plane; Copernicus Foundation Polish Astronomy; Acta Astronomica; 69; 1; 3-2019; 1-23
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