Wiley, Monthly Notice- Royal Astronomical Society -Letters-, 1(368), p. L6-L9
DOI: 10.1111/j.1745-3933.2006.00145.x
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Kashlinsky et al. (2005) find a significant cosmic infrared background fluctuation excess on angular scales >50 arcsec that cannot be explained by instrumental noise or local foregrounds. The excess has been tentatively attributed to emission from primordial very massive (PopIII) stars formed 5. The infrared fluctuation excess is instead very precisely accounted by the clustering signal of galaxies at z>5, predominantly hosting PopII stars with masses and properties similar to the present ones.