structural parameters of star clusters: stochastic effects

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ID: 181893
2014
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Abstract
Stochasticity of bright stars introduces uncertainty and bias into derived structural parameters of star clusters. We have simulated a grid of cluster V-band images, observed with the Subaru Suprime-Cam, with age, mass and size representing a cluster population in the M31 galaxy and derived their structural parameters by fitting King model to the surface brightness distribution. We have found that clusters less massive than 104 M⊙ show significant uncertainty in their core and tidal radii for all ages, while clusters younger than 10 Myr have their sizes systematically underestimated for all masses. This emphasizes the importance of stochastic simulations to assess the true uncertainty of structural parameters in studies of semi-resolved and unresolved clusters.
Reference Key
d.2014openstructural Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Narbutis D.;Stonkutė R.;de Meulenaer P.;Mineikis T.;Vansevičius V.
Journal deviant behavior
Year 2014
DOI
10.1515/astro-2017-0175
URL
http://www.degruyter.com/view/j/astro.2014.23.issue-2/astro-2017-0175/astro-2017-0175.xml?format=INT
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