Abstract
This work studies the correlation among environmental density and radio AGN presence up to z = 2. Using data from the photometric COSMOS survey and its radio 1.4 GHz follow-up (VLA-COSMOS), a sample of radio AGNs has been defined. The environment was studied using the richness distributions inside a parallelepiped with base side of 1 Mpc and height proportional to the photometric redshift precision. Radio AGNs are found to be always located in environments significantly richer than those around galaxies with no radio emission. Moreover, a distinction based on radio AGN power shows that the significance of the environmental effect is only maintained for low-power radio sources. The results of this work show that denser environments play a significant role in enhancing the probability that a galaxy hosts a radio AGN and, in particular, low-power ones.
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Malavasi, N., Bardelli, S., Ciliegi, P., Ilbert, O., Pozzetti, L., Zucca, E. (2016). The Environment of Radio Sources in the VLA-COSMOS Survey Field. In: Napolitano, N., Longo, G., Marconi, M., Paolillo, M., Iodice, E. (eds) The Universe of Digital Sky Surveys. Astrophysics and Space Science Proceedings, vol 42. Springer, Cham. https://doi.org/10.1007/978-3-319-19330-4_17
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DOI: https://doi.org/10.1007/978-3-319-19330-4_17
Publisher Name: Springer, Cham
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