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arXiv · 0906.4938

Testing the starburst/AGN connection with SWIRE X-ray/70 micron sources

M. Trichas·A. Georgakakis·M. Rowan-Robinson·K. Nandra·D. Clements·M. Vaccari
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Abstract

We explore the nature of X-ray sources with 70 micron counterparts selected in the SWIRE fields ELAIS-N1, Lockman Hole and Chandra Deep Field South, for which Chandra X-ray data are available. A total of 28 X-ray/70 micron sources in the redshift interval 0.5 50 solar masses per year) that dominates in the infrared. It is found that the X-ray and infrared luminosities of the sample sources are broadly correlated, consistent with a link between AGN activity and star-formation. Contrary to the predictions of some models for the co-evolution of AGN and galaxies, the X-ray/70 micron sources in the sample are not more obscured at X-ray wavelengths compared to the overall X-ray population. It is also found that the X-ray/70 micron sources have lower specific star-formation rates compared to the general 70 micron population, consistent with AGN feedback moderating the star-formation in the host galaxies.

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M. Trichas, A. Georgakakis, M. Rowan-Robinson, K. Nandra, D. Clements, M. Vaccari. 2009-06-26. Testing the starburst/AGN connection with SWIRE X-ray/70 micron sources. https://doi.org/10.1111/j.1365-2966.2009.15340.x

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