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e-MERLIN and VLBI observations of the luminous infrared galaxy IC883: a nuclear starburst and an AGN candidate revealed

Submitter: Megan Argo
Description: IC883 is a luminous infrared galaxy (LIRG; L_FIR > 10^11 L_sun) in an advanced merger stage. We have used the recently upgraded e-MERLIN at a median central frequency of 6.9 GHz, and the e-EVN at 5 GHz, to observe contemporaneously the circumnuclear and nuclear regions of this LIRG.

The image on the left shows the circumnuclear emission as seen by e-MERLIN, while the image on the right shows the nuclear region imaged with the e-EVN. An AGN candidate source dominates the radio emission at both circumnuclear and nuclear scales, and yet IC883 displays very active star formation as indicated by the detection of nuclear radio SNe and SNe discovered by near-IR observations.

This work has been recently accepted for publication in A&A (eprint arXiv:1205.2257) and represents the first publication based on e-MERLIN observations. Authors: Cristina Romero-Cañizales, Miguel A. Pérez-Torres, Antxon Alberdi, Megan K. Argo, Rob J. Beswick, Erkki Kankare, Fabien Batejat, Andreas Efstathiou, Seppo Mattila, John E. Conway, Simon T. Garrington, Tom W. B. Muxlow, Stuart D. Ryder and Petri Väisänen.
Copyright: The authors
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