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Abstract:

Aims. We present CCD photometry in the Washington system C and T 1 passbands down to T1 - 22.5 in the fields of NGC 1697, SL 133, NGC 1997, SL 663, and OHSC 28, five mostly unstudied star clusters in the LMC.Methods. Cluster radii were estimated from star counts in appropriate-sized boxes distributed throughout the entire observed fields. We perform a detailed analysis of the field star contamination and derive cluster colour-magnitude diagrams (CMDs). Based on the best fits of isochrones computed by the Padova group to the (T1, C - T1) CMDs, the δ (T1) index and the Standard Giant Branch procedure, we derive metallicities and ages for the five clusters. We combine our sample with clusters with ages and metallicities on a similar scale and examine relationships between position in the LMC, age and metallicity. Results. With the exception of NGC 1697 (age = 0.7 Gyr, [Fe/H] = 0.0 dex), the remaining four clusters are of intermediate-age (from 2.2 to 3.0 Gyr) and relatively metal-poor ([Fe/H] = -0.7 dex). The cluster and field age-metallicty realtions show evidence for a metallicity offset but do overlap, particularly on the upper envelope side of the cluster age-metallicity relation.Conclusions. We confirm previous results that clusters younger than -1 Gyr were formed during an outside-in process; this occurred after a burst of cluster formation that took place mainly in the outer disk and peaked at -2 Gyr ago. © 2009 ESO.

Registro:

Documento: Artículo
Título:Washington photometry of five star clusters in the Large Magellanic Cloud
Autor:Piatti, A.E.; Geisler, D.; Sarajedini, A.; Gallart, C.
Filiación:Instituto de Astronomía y Física Del Espacio, CC 67, Suc. 28, 1428, Ciudad de Buenos Aires, Argentina
Grupo de Astronomía, Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Department of Astronomy, University of Florida, PO Box 112055, Gainesville, FL 32611, United States
Instituto de Astrofísica de Canarias, Calle Vía Laćtea, 38200, La Laguna, Tenerife, Spain
Palabras clave:Galaxies: Individual: LMC; Galaxies: Star clusters; Magellanic Clouds; Stars: Hertzsprung-Russell (HR) and C-M diagrams; Techniques: Photometric; Galaxies: Individual: LMC; Galaxies: Star clusters; Magellanic Clouds; Stars: Hertzsprung-Russell (HR) and C-M diagrams; Techniques: Photometric; Clouds; Graphic methods; Photometers; Photometry; Stars; Galaxies
Año:2009
Volumen:501
Número:2
Página de inicio:585
Página de fin:593
DOI: http://dx.doi.org/10.1051/0004-6361/200912223
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v501_n2_p585_Piatti

Referencias:

  • Alves, D.R., Rejkuba, M., Minniti, D., Cook, K.H., (2002) ApJ, 573, pp. L51
  • Bekki, K., (2008) ApJ, , accepted
  • Bekki, K., Chiba, M., (2005) MNRAS, 356, p. 680
  • Bekki, K., Couch, W.J., Beasley, M.A., (2004) ApJ, 610, pp. L93
  • Bica, E., Geisler, D., Dottori, H., (1998) AJ, 116, p. 723
  • Brocato, E., Castellani, V., Ferraro, F.R., Piersimoni, A.M., Testa, V., (1996) MNRAS, 282, p. 614
  • Burstein, D., Heiles, C., (1982) AJ, 87, p. 1165
  • Cantema, R., (1976) AJ, 81, p. 228
  • Carrera, R., Gallart, C., Pancino, E., Zinn, R., Hardy, E., (2006) Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites, ESO Astrophysics Symposia, p. 230. , Springer-Verlag
  • Carrera, R., Gallart, C., Hardy, E., Aparicio, A., Zinn, R., (2008) AJ, 135, p. 836
  • Carretta, E., Gratton, R.G., Clementini, G., Fusi Pecci, F., (2000) ApJ, 120, p. 1808
  • Cole, A.A., Tolstoy, E., Gallagher III, J.S., Smecker-Hane, T., (2005) AJ, 129, p. 1465
  • Dutra, C.M., Bica, E., Clariá, J.J., Piatti, A.E., Ahumada, A.V., (2001) A&A, 371, p. 895
  • Ferraro, I., Ferraro, F.R., Fusi Pecci, F., Corsi, C.E., Buonanno, R., (1995) MNRAS, 272, p. 391
  • Gallart, C., Zoccali, M., Bertelli, G., (2003) AJ, 125, p. 742
  • Gallart, C., Stetson, P.B., Meschin, I.P., Pont, F., Hardy, E., (2008) ApJ, 682 L, p. 89
  • Geisler, D., (1996) AJ, 111, p. 480
  • Geisler, D., Sarajedini, A., (1999) AJ, 117, p. 308
  • Geisler, D., Bica, E., Dottori, H., (1997) AJ, 114, p. 1920
  • Geisler, D., Piatti, A.E., Bica, E., Clariá, J.J., (2003) MNRAS, 341, p. 771
  • Girardi, L., Bertelli, G., Bressan, A., (2002) A&A, 391, p. 195
  • Grocholski, A.J., Cole, A.A., Sarajedini, A., Geisler, D., Smith, V.V., (2006) AJ, 132, p. 1630
  • Hill, V., François, P., Spite, M., Primas, F., Spite, F., (2000) A&A, 364, pp. L19
  • Johnson, J.A., Bolte, M., Stetson, P.B., Hesser, J.E., Somerville, R., (1999) ApJ, 527, p. 199
  • Kontizas, M., Morgan, D.H., Hatzidimitriou, D., Kontizas, E., (1990) A&AS, 84, p. 527
  • Lejeune, T., Schaerer, D., (2001) A&A, 366, p. 538
  • Lyngå, G., Westerlund, B., (1963) MNRAS, 127, p. 31
  • Olsen, K.A.G., Hodge, P.W., Mateo, M., (1998) MNRAS, 300, p. 665
  • Olszewski, E.W., Harris, H.C., Schommer, R.A., Cantema, R.W., (1988) AJ, 95, p. 840
  • Olszewski, E.W., Schommer, R.A., Suntzeff, N.B., Harris, H.C., (1991) AJ, 101, p. 515
  • Piatti, A.E., Geisler, D., Bica, E., (1999) AJ, 118, p. 2865
  • Piatti, A.E., Sarajedini, A., Geisler, D., Bica, E., Clariá, J.J., (2002) MNRAS, 329, p. 556
  • Piatti, A.E., Geisler, D., Bica, E., Clariá, J.J., (2003) MNRAS, 343, p. 851
  • Piatti, A.E., Bica, E., Geisler, D., Clariá, J.J., (2003) MNRAS, 341, p. 977
  • Piatti, A.E., Clariá, J.J., Ahumada, A.V., (2003) MNRAS, 340, p. 1249
  • Piatti, A.E., Bica, E., Geisler, D., Clariá, J.J., (2003) MNRAS, 344, p. 965
  • Piatti, A.E., Clariá, J.J., Ahumada, A.V., (2004) A&A, 418, p. 979
  • Piatti, A.E., Clariá, J.J., Ahumada, A.V., (2004) A&A, 421, p. 991
  • Piatti, A.E., Geisler, D., Sarajedini, A., Gallart, D., Wischnjewsky, M., (2008) MNRAS, 389, p. 429
  • Pietrzynski, G., Gieren, W., (2002) AJ, 124, p. 2633
  • Shapley, H., Lindsay, E.M., (1963) Irish AJ, 6, p. 74
  • Sarajedini, A., Grocholski, A.J., Levine, J., Lada, E., (2002) AJ, 124, p. 2625
  • van der Marel, R.P., Cioni, M.R.L., (2001) AJ, 122, p. 1807
  • Westerlund, B.E., (1990) A&AR, 2, p. 29
  • Whitelock, P.A., Feast, M.W., van Loon, J.T., Zijlstra, A.A., (2003) MNRAS, 342, p. 86

Citas:

---------- APA ----------
Piatti, A.E., Geisler, D., Sarajedini, A. & Gallart, C. (2009) . Washington photometry of five star clusters in the Large Magellanic Cloud. Astronomy and Astrophysics, 501(2), 585-593.
http://dx.doi.org/10.1051/0004-6361/200912223
---------- CHICAGO ----------
Piatti, A.E., Geisler, D., Sarajedini, A., Gallart, C. "Washington photometry of five star clusters in the Large Magellanic Cloud" . Astronomy and Astrophysics 501, no. 2 (2009) : 585-593.
http://dx.doi.org/10.1051/0004-6361/200912223
---------- MLA ----------
Piatti, A.E., Geisler, D., Sarajedini, A., Gallart, C. "Washington photometry of five star clusters in the Large Magellanic Cloud" . Astronomy and Astrophysics, vol. 501, no. 2, 2009, pp. 585-593.
http://dx.doi.org/10.1051/0004-6361/200912223
---------- VANCOUVER ----------
Piatti, A.E., Geisler, D., Sarajedini, A., Gallart, C. Washington photometry of five star clusters in the Large Magellanic Cloud. Astron. Astrophys. 2009;501(2):585-593.
http://dx.doi.org/10.1051/0004-6361/200912223