Artículo
The Viscacha survey - II: Structure of star clusters in the Magellanic Clouds periphery
Santos, Joao F. C.; Maia, Francisco; Dias, Bruno; de O. Kerber, Leandro; Piatti, Andres Eduardo
; Bica, Eduardo; Angelo, Mateus S.; Minniti, Dante; Pérez Villegas, Angeles; Roman Lopes, Alexandre; Westera, Pieter; Fraga, Luciano; Quint, Bruno; Sanmartim, David
Fecha de publicación:
08/2020
Editorial:
Oxford University Press
Revista:
Monthly Notices of the Royal Astronomical Society
ISSN:
0035-8711
e-ISSN:
1365-2966
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We provide a homogeneous set of structural parameters of 83 star clusters located at the periphery of the Small Magellanic Cloud (SMC) and the Large Magellanic Cloud (LMC). The clusters’ stellar density and surface brightness profiles were built from deep, AO assisted optical images, and uniform analysis techniques. The structural parameters were obtained from King and Elson et al. model fittings. Integrated magnitudes and masses (for a subsample) are also provided. The sample contains mostly low surface brightness clusters with distances between 4.5 and 6.5 kpc and between 1 and 6.5 kpc from the LMC and SMC centres, respectively. We analysed their spatial distribution and structural properties, comparing them with those of inner clusters. Half-light and Jacobi radii were estimated, allowing an evaluation of the Roche volume tidal filling. We found that: (i) for both MCs, the tidal radii are on average larger than those of inner clusters; (ii) the core radii dispersion tends to be greater for LMC clusters located towards the southwest, with position angles of ∼200 degrees and about ∼5 degrees from the LMC centre, i.e., those LMC clusters nearer to the SMC; (iii) the analysis of clusters with ages available revealed that the core radius evolution is similar to the one of inner clusters; (iv) Roche volumes are overfilled for SMC clusters with galactocentric distances closer than 3 kpc.
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Articulos(ICB)
Articulos de INSTITUTO INTERDISCIPLINARIO DE CIENCIAS BASICAS
Articulos de INSTITUTO INTERDISCIPLINARIO DE CIENCIAS BASICAS
Citación
Santos, Joao F. C.; Maia, Francisco; Dias, Bruno; de O. Kerber, Leandro; Piatti, Andres Eduardo; et al.; The Viscacha survey - II: Structure of star clusters in the Magellanic Clouds periphery; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 498; 8-2020; 205-222
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