Navegar

Colección

Datos Estadísticas

Artículo

Piatti, A.E.; Sarajedini, A.; Geisler, D.; Seguel, J.; Clark, D. "Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud" (2005) Monthly Notices of the Royal Astronomical Society. 358(4):1215-1230
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:

Colour-magnitude diagrams (CMDs) are presented for the first time for 10 star clusters projected on to the Small Magellanic Cloud (SMC). The photometry was carried out in the Washington system C and T1 filters allowing the determination of ages by means of the magnitude difference between the red giant clump and the main-sequence turnoff (MSTO), and metallicities from the red giant branch (RGB) locus. The clusters all have ages in the range 1.5-4 Gyr and metallicities between -1.3 < [Fe/H] < -0.6, with respective errors of -0.5 Gyr and 0.3 dex. This increases substantially the sample of intermediate-age clusters in the SMC with well-derived parameters. We combine our results with those for other clusters in the literature to derive as large and homogeneous a data base as possible (totalling 26 clusters) in order to study global effects. We find evidence for two peaks in the age distribution of SMC clusters, at ~6.5 and 2.5 Gyr, in good agreement with previous hints involving smaller samples. The most recent peak occurs at a time that corresponds to a very close encounter between the Large Magellanic Cloud (LMC) and the SMC according to the recent dynamical models of Bekki et al. that they used to explain the enhancement of LMC clusters with this age. It appears cluster formation may have been similarly stimulated in the SMC by this encounter as well. We also find very good agreement between cluster ages and metallicities and the prediction from a bursting model from Pagel and Tautvaišiene with a burst that occurred 3 Gyr ago. These two lines of evidence together favour a bursting cluster formation history as opposed to a continuous one for the SMC. © 2005 RAS.

Registro:

Documento: Artículo
Título:Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud
Autor:Piatti, A.E.; Sarajedini, A.; Geisler, D.; Seguel, J.; Clark, D.
Filiación:Inst. de Astron. y Fis. del Espacio, CC 67, Suc. 28, 1428, Ciudad de Buenos Aires, Argentina
Department of Astronomy, University of Florida, PO Box 112055, Gainesville, FL 32611, United States
Grupo de Astronomía, Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Cerro Tololo Inter-Amer. Observatory, Casilla 603, La Serena, Chile
Palabras clave:Galaxies: individual: SMC; Galaxies: star clusters; Magellanic Clouds; Techniques: photometric
Año:2005
Volumen:358
Número:4
Página de inicio:1215
Página de fin:1230
DOI: http://dx.doi.org/10.1111/j.1365-2966.2005.08694.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_v358_n4_p1215_Piatti

Referencias:

  • Bekki, K., Couch, W.J., Beasley, M.A., Forbes, D.A., Chiba, M., Da Costa, G.S., (2004) ApJ, 610, pp. L93
  • Bica, E., Geisler, D., Dottori, H., Clariá, J.J., Piatti, A.E., Santos Jr., J.F.C., (1998) AJ, 116, p. 723
  • Burstein, D., Heiles, C., (1982) AJ, 87, p. 1165
  • Bica, E., Schmitt, H.R., (1995) ApJS, 101, p. 41
  • Canterna, R., (1976) AJ, 81, p. 228
  • Cioni, M.R., Van Der Marel, R.P., Loup, C., Habing, H.J., (2000) A&A, 359, p. 601
  • Crowl, H.H., Sarajedini, A., Piatti, A.E., Geisler, D., Bica, E., Clariá, J.J., Santos Jr., J.F.C., (2001) AJ, 122, p. 220
  • Da Costa, G.S., (1991) Proc. IAU Symp., 148, p. 183. , Haynes R., Milne D., eds, The Magellanic Clouds. Kluwer, Dordrecht
  • Da Costa, G.S., Hatzidimitriou, D., (1998) AJ, 115, p. 1934
  • Gardiner, L.T., Hawkins, M.R.S., (1991) MNRAS, 251, p. 174
  • Geisler, D., (1996) AJ, 111, p. 480
  • Geisler, D., Sarajedini, A., (1999) AJ, 117, p. 308
  • Geisler, D., Bica, E., Dottori, H., Clariá, J.J., Piatti, A.E., Santos Jr., J.F.C., (1997) AJ, 114, p. 1920
  • Geisler, D., Piatti, A.E., Bica, E., Clariá, J.J., (2003) MNRAS, 341, p. 771
  • Gilmore, G., Wyse, R.F.G., (1991) ApJ, 367, pp. L55
  • Hodge, P.W., Wright, F.W., (1974) AJ, 79, p. 858
  • Kron, G.E., (1956) PASP, 68, p. 125
  • Lauberts, A., (1982) ESO/Uppsala Survey of the ESO (B) Atlas, , European Southern Observatory, Munich
  • Lindsay, E.M., (1958) MNRAS, 118, p. 172
  • Marconi, G., Matteucci, F., Tosi, M., (1994) MNRAS, 270, p. 35
  • Olszewski, E.W., Suntzeff, N.B., Mateo, M., (1996) ARA&A, 34, p. 511
  • Pagel, B.E.J., Tautvaišiene, G., (1998) MNRAS, 299, p. 535
  • Piatti, A.E., Geisler, D., Bica, E., Clariá, J.J., Santos Jr., J.F.C., Sarajedini, A., Dottori, H., (1999) AJ, 118, p. 2865
  • Piatti, A.E., Santos Jr., J.F.C., Clariá, J.J., Bica, E., Sarajedini, A., Geisler, D., (2001) MNRAS, 325, p. 792
  • 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, 344, p. 965
  • Pietrzyński, G., Udalski, A., Kubiak, M., Szymański, M., Woźniak, P., Zebruń, K., (1998) Acta Astron., 48, p. 175
  • Rafelski, M., Zaritsky, D., (2005) AJ, , in press (astro-ph/0408186)
  • Rich, R.M., Shara, M., Fall, M., Zurek, D., (2000) AJ, 119, p. 197
  • Schlegel, D.J., Finkbeiner, D.F., Davis, M., (1998) ApJ, 500, p. 525
  • Stetson, P.B., (1994) PASP, 106, p. 250
  • Stryker, L.L., Da Costa, G.S., Mould, J.R., (1985) ApJ, 298, p. 544

Citas:

---------- APA ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Seguel, J. & Clark, D. (2005) . Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 358(4), 1215-1230.
http://dx.doi.org/10.1111/j.1365-2966.2005.08694.x
---------- CHICAGO ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Seguel, J., Clark, D. "Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud" . Monthly Notices of the Royal Astronomical Society 358, no. 4 (2005) : 1215-1230.
http://dx.doi.org/10.1111/j.1365-2966.2005.08694.x
---------- MLA ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Seguel, J., Clark, D. "Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud" . Monthly Notices of the Royal Astronomical Society, vol. 358, no. 4, 2005, pp. 1215-1230.
http://dx.doi.org/10.1111/j.1365-2966.2005.08694.x
---------- VANCOUVER ----------
Piatti, A.E., Sarajedini, A., Geisler, D., Seguel, J., Clark, D. Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud. Mon. Not. R. Astron. Soc. 2005;358(4):1215-1230.
http://dx.doi.org/10.1111/j.1365-2966.2005.08694.x