The merging/AGN connection II. Ionization of the circumnuclear regions

Details The merging/AGN connection II. Ionization of the circumnuclear regions The merging/AGN connection II. Ionization of the circumnuclear regions

2004-11-18

arxiv.org/abs/astro-ph/0411528v1

Astron.Astrophys. 429 (2005) L21-L24

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, accepted for publishing in A&A Letters

Scientific paper

10.1051/0004-6361:200400107

We report the first results of a study of a sample of 20 galaxy mergers/interacting systems, using the VIMOS and PMAS integral field spectrographs. For each object, we extracted the integrated spectrum of the central regions and analyzed the ionization state using classical diagnostic diagrams (Veilleux & Osterbrock 1987). There is evidence of AGN ionization in 4 of the objects, i.e. 20% of the sample, a considerably higher fraction than found in previous studies ~4%

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