Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/64310| Type: | Artigo de Periódico |
| Title: | The VISCACHA survey - II. structure of star clusters in the magellanic clouds periphery |
| Authors: | João Francisco Coelho dos Santos Junior Alexandre Roman Lopes Pieter Willem Westera Luciano Fraga Bruno Corrêa Quint David Sanmartim Francisco Ferreira de Souza Maia Bruno Moreira de Souza Dias Leandro de Oliveira Kerber Andrés Eduardo Piatti Eduardo Luiz Damiani Bica Mateus de Souza Angelo Dante Minniti del Barco Maria de los Angeles Perez Villegas |
| Abstract: | 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 our sample of LMC clusters, the tidal radii are, on average, larger than those of inner clusters from previous studies; (ii) the core radii dispersion tends to be greater for LMC clusters located towards the southwest, with position angles of ∼200° and about ∼5° from the LMC centre, i.e. those LMC clusters nearer to the SMC; (iii) the core radius evolution for clusters with known age is similar to that of inner clusters; (iv) SMC clusters with galactocentric distances closer than 4 kpc are overfilling; (v) the recent Clouds collision did not leave marks on the LMC clusters’ structure that our analysis could reveal. |
| Subject: | Galáxias Aglomerado de estrelas |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | https://doi.org/10.1093/mnras/staa2425 |
| URI: | http://hdl.handle.net/1843/64310 |
| Issue Date: | 2020 |
| metadata.dc.url.externa: | https://academic.oup.com/mnras/article/498/1/205/5892585 |
| metadata.dc.relation.ispartof: | Monthly Notices of the Royal Astronomical Society |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| The VISCACHA survey II Structure of star clusters.pdf | 1.58 MB | Adobe PDF | View/Open |
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