The VMC survey - XV: The Small Magellanic Cloud-Bridge connection history as traced by their star cluster populations

A.E. Piatti, R. de Grijs, S. Rubele, M-R.L. Cioni, V. Ripepi, L. Kerber

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)
79 Downloads (Pure)


We present results based on YJKs photometry of star clusters located in the outermost, eastern region of the Small Magellanic Cloud (SMC). We analysed a total of 51 catalogued clusters whose colour-magnitude diagrams (CMDs), having been cleaned from field-star contamination, were used to assess the clusters' reality and estimate ages of the genuine systems. Based on CMD analysis, 15 catalogued clusters were found to be possible non-genuine aggregates. We investigated the properties of 80 per cent of the catalogued clusters in this part of the SMC by enlarging our sample with previously obtained cluster ages, adopting a homogeneous scale for all. Their spatial distribution suggests that the oldest clusters, log(t/yr) ≥ 9.6, are in general located at greater distances to the galaxy's centre than their younger counterparts - 9.0 ≤ log(t/yr) ≤ 9.4 - while two excesses of clusters are seen at log(t/yr) ~9.2 and log(t yr-1) ˜ 9.7. We found a trail of younger clusters which follow the wing/bridge components. This long spatial sequence does not only harbour very young clusters, log(t yr-1) ~7.3, but it also hosts some of intermediate ages, log(t/yr) ~9.1. The derived cluster and field-star formation frequencies as a function of age are different. The most surprising feature is an observed excess of clusters with ages of log(t/yr) < 9.0, which could have been induced by interactions with the LMC.
Original languageEnglish
Pages (from-to)552-563
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Early online date17 Apr 2015
Publication statusPublished - 11 Jun 2015


  • techniques: photometric - galaxies: individual: SMC, Magellanic Clouds


Dive into the research topics of 'The VMC survey - XV: The Small Magellanic Cloud-Bridge connection history as traced by their star cluster populations'. Together they form a unique fingerprint.

Cite this