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The nature of the faint sub-mJy radio population

Nick Seymour·Ian McHardy·Katherine Gunn·Derek Moss
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Abstract

The up-turn in Euclidean normalised source counts below 1mJy at 1.4GHz is well established in many deep radio surveys. There are strong reasons, observationally and theoretically, to believe that this up-turn is due to strong evolution of the starforming population up to z=2. However this hypothesis needs further confirmation spectroscopically and the examples in the literature are sparse. Theoretically the up-turn is well modelled by the evolution of the local radio starforming population and is consistent with the up-turn seen in recent mid-infrared source counts at 15um (ISOCAM) and 24um (Spitzer) and the tight correlation of the radio and MIR Luminosities of starforming galaxies.

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Nick Seymour, Ian McHardy, Katherine Gunn, Derek Moss. 2004-11-01. The nature of the faint sub-mJy radio population. https://arxiv.org/abs/astro-ph/0411015

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