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The Puzzling Frequencies of CEMP and NEMP Stars
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The Puzzling Frequencies of CEMP and NEMP Stars
classification
astro-ph.SR
astro-ph.GA
keywords
starscempnempbinarycarbon-constraintsfrequenciesfunction
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We present the results of binary population simulations of carbon- and nitrogen-enhanced metal-poor (CEMP and NEMP) stars. We show that the observed paucity of very nitrogen-rich stars puts strong constraints on possible modifications of the initial mass function at low metallicity.
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