SIMBAD references

2013MNRAS.435L..63C - Mon. Not. R. Astron. Soc., 435, L63-L67 (2013/October-2)

On a possible origin for the lack of old star clusters in the Small Magellanic Cloud.

CARPINTERO D.D., GOMEZ F.A. and PIATTI A.E.

Abstract (from CDS):

We model the dynamical interaction between the Small and Large Magellanic Clouds and their corresponding stellar cluster populations. Our goal is to explore whether the lack of old clusters ( ≳ 7Gyr) in the Small Magellanic Cloud (SMC) can be the result of the capture of clusters by the Large Magellanic Cloud (LMC) as well as their ejection due to the tidal interaction between the two galaxies. For this purpose, we perform a suite of numerical simulations probing a wide range of parameters for the orbit of the SMC about the LMC. We find that, for orbital eccentricities e ≥ 0.4, approximately 15 percent of the SMC clusters are captured by the LMC. In addition, another 20-50 percent of its clusters are ejected into the intergalactic medium. In general, the clusters lost by the SMC are the less tightly bound cluster population. The final LMC cluster distribution shows a spatial segregation between clusters that originally belonged to the LMC and those that were captured from the SMC. Clusters that originally belonged to the SMC are more likely to be found in the outskirts of the LMC. Within this scenario, it is possible to interpret the difference observed between the star field and cluster SMC age-metallicity relationships for ages ≳ 7Gyr.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): methods: numerical - galaxies: individual: SMC - Magellanic Clouds - galaxies: star clusters: general

Simbad objects: 4

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