Navegar

Colección

Datos Estadísticas

Artículo

Piatti, A.E.; Clariá, J.J.; Ahumada, A.V. "NGC 2587: A sparse open cluster projected on to a populous star field" (2009) Monthly Notices of the Royal Astronomical Society. 397(2):1073-1083
Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

We present CCD photometry in the Johnson U, B and V and Kron-Cousins I passbands for the open cluster NGC 2587. The sample consists of 4406 stars reaching down to V ∼ 21.0. We developed a new method to clean statistically the colour-magnitude diagrams. NGC 2587 appears to be a sparse, relatively bright open cluster, with a few tens of members projected on to a populous star field. The comparatively bright F7/8 II type star HD 70927, located close to the cluster centre, seems not to be a member. Our analysis suggests that NGC 2587 is slightly younger than the Hyades and probably of solar metallicity. A cluster radius of roughly 8 arcmin was estimated from the radial stellar density profile. From 18 probable cluster members with measured proper motions, we derive the following mean values for NGC 2587: μα = -4.3 ± 3.6 mas yr-1 and μδ = -2.5 ± 3.4 mas yr-1. Adopting the theoretical metal content Z = 0.02, which provides the best global fit, we derive a cluster age of 500+60 -50. Simultaneously, colour excesses E(B - V) = 0.10 and E(V - I) = 0.15 and an apparent distance modulus of V - MV = 12.50 are obtained. The interstellar extinction in the cluster direction is found to follow the normal law. NGC 2587 is located at a distance of (2.70 ± 0.70) kpc from the Sun and ∼9.8 kpc from the Galactic centre. © 2009 RAS.

Registro:

Documento: Artículo
Título:NGC 2587: A sparse open cluster projected on to a populous star field
Autor:Piatti, A.E.; Clariá, J.J.; Ahumada, A.V.
Filiación:Instituto de Astronomía y Física Del Espacio, CC 67, Suc. 28, 1428 Ciudad de Buenos Aires, Argentina
Observatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, X5000BGR Córdoba, Argentina
European Southern Observatory, Alonso de Córdova 3107, Santiago, Chile
Palabras clave:Galaxy: open clusters and associations: general; Galaxy: open clusters and associations: individual: (NGC 2587); Techniques: photometric
Año:2009
Volumen:397
Número:2
Página de inicio:1073
Página de fin:1083
DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.15069.x
Título revista:Monthly Notices of the Royal Astronomical Society
Título revista abreviado:Mon. Not. R. Astron. Soc.
ISSN:00358711
CODEN:MNRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v397_n2_p1073_Piatti

Referencias:

  • Alter, G., Ruprecht, J., Vanisek, J., (1970) Catalogue of Star Clusters and Associations., , Akademiai Kiado. Budapest
  • Archinal, B.A., Hynes, S.J., (2003) Star Clusters., , Willman-Bell. Richmod, VA
  • Bonatto, C., Kerber, L.O., Santiago, B.X., Bica, E., (2006) A&A, 446, p. 121
  • Bustos Fierro, I.H., (2007), Doctoral Thesis. Universidad Nacional de Córdoba. Argentina. BF07); Chen, L., Hou, J.L., Wang, J.J., (2003) AJ, 125, p. 1397
  • Collinder, P., (1931) Medd. Lunds. Astron. Obs., 2
  • Friel, E.D., (1995) ARA&A, 33, p. 381
  • Friel, E.D., Janes, K.A., Tavarez, M., Scott, J., Katsanis, R., Lotz, J., Hong, L., Miller, N., (2002) AJ, 124, p. 2693
  • Houk, N., Cowley, A.P., (1975) University of Michigan Catalogue of Two-Dimensional Spectral Types for the HD Stars. Univ. Michigan, Ann Arbor
  • Landolt, A., (1992) AJ, 104, p. 340
  • Lauberts, A., (1982) The ESO/Uppsala Survey of the ESO(B) Atlas, , European Southern Observatory. Garching
  • Lejeune, T., Schaerer, D., (2001) A&A, 366, p. 538
  • Lyngå, G., (1987) Catalogue of Open Cluster Data., , Centre de Données Stellaires. Strasbourg
  • Palma, T., Ahumada, A.V., Clariá, J.J., Bica, E., (2008) Astron. Nachrichten, 329, p. 392
  • Piatti, A.E., Clariá, J.J., Abadi, M.G., (1995) AJ, 110, p. 2813
  • Piatti, A.E., Clariá, J.J., Ahumada, A.V., (2004) A&A, 421, p. 991
  • Piatti, A.E., Clariá, J.J., Ahumada, A.V., (2004) MNRAS, 349, p. 641
  • Piatti, A.E., Clariá, J.J., Ahumada, A.V., (2006) MNRAS, 367, p. 599
  • Stetson, P.B., Davis, L.E., Crabtree, D.R., (1990) CCDs in Astronomy., p. 289. , inASP Conf. Ser. Vol. 8. Astron. Soc. Pac. San Francisco. p
  • Straizys, V., (1992) Multicolor Stellar Photometry., , Pachart Publishing House. Tucson, Arizona
  • Trumpler, R.J., (1930) Lick Obs. Bull., 14, p. 154
  • Van Den Bergh, S., Hagen, G.L., (1975) AJ, 80, p. 11

Citas:

---------- APA ----------
Piatti, A.E., Clariá, J.J. & Ahumada, A.V. (2009) . NGC 2587: A sparse open cluster projected on to a populous star field. Monthly Notices of the Royal Astronomical Society, 397(2), 1073-1083.
http://dx.doi.org/10.1111/j.1365-2966.2009.15069.x
---------- CHICAGO ----------
Piatti, A.E., Clariá, J.J., Ahumada, A.V. "NGC 2587: A sparse open cluster projected on to a populous star field" . Monthly Notices of the Royal Astronomical Society 397, no. 2 (2009) : 1073-1083.
http://dx.doi.org/10.1111/j.1365-2966.2009.15069.x
---------- MLA ----------
Piatti, A.E., Clariá, J.J., Ahumada, A.V. "NGC 2587: A sparse open cluster projected on to a populous star field" . Monthly Notices of the Royal Astronomical Society, vol. 397, no. 2, 2009, pp. 1073-1083.
http://dx.doi.org/10.1111/j.1365-2966.2009.15069.x
---------- VANCOUVER ----------
Piatti, A.E., Clariá, J.J., Ahumada, A.V. NGC 2587: A sparse open cluster projected on to a populous star field. Mon. Not. R. Astron. Soc. 2009;397(2):1073-1083.
http://dx.doi.org/10.1111/j.1365-2966.2009.15069.x