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We use a model developed by Xu, Ferrara, and Chen (Mon Not Roy Astron Soc, submitted) to compute the 21 cm line absorption signatures imprinted by star-forming dwarf galaxies (DGs) and starless minihalos (MHs). The method, based on a statistical comparison of the equivalent width (Wν) distribution and flux correlation function, allows us to derive a simple selection criteria for candidate DGs at...
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