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An intermediate-band photometric study of the "Globular Cluster" NGC 2419

NGC 2419 is one of the remotest star clusters in the Milky Way halo and its exact nature is yet unclear: While it has traits reminiscent of a globular cluster (GC), its large radius and suggestions of an abundance spread have fueled the discussion about its origin in an extragalactic environment, possibly the remnants of the accretion of a dwarf galaxy. Here, we present first results from deep intermediate-band photometry of NGC 2419, which enables us to search for chemical (light element) abundance variations, metallicity spreads, and thus multiple stellar populations through well calibrated Stroemgren indices.

preprint2013arXivOpen access
Andreas KochMatthias FrankSofia FeltzingDaniel AdenNikolay KacharovMark I. Wilkinson
astro-ph.GA
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Andreas KochMatthias FrankSofia FeltzingDaniel AdenNikolay KacharovMark I. Wilkinson

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