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| evn:evn_science [2017/08/07 12:20] – [No AGN evidence in NGC 1614 from deep radio VLBI observations] michael.lindqvist | evn:evn_science [2018/09/12 08:45] – antonis |
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| [[http://www.jive.eu/jivewiki/doku.php?id=evn:guidelines|The next deadline is October 1, 2017]]. | [[http://www.jive.eu/jivewiki/doku.php?id=evn:guidelines|The next deadline is October 1, 2018]]. |
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| [[https://academic.oup.com/mnrasl/article-lookup/doi/10.1093/mnrasl/slx085| Herrero-Illana et al. (2017)]] present deep dual-band 5.0- and 8.4 GHz EVN observations of NGC 1614, a local luminous infrared galaxy with a powerful circumnuclear starburst ring, and whose nuclear engine origin is still controversial. The aim was to detect and characterize any compact radio structures both in the nuclear region and in the circumnuclear ring. They did not find any compact source in the central 200 pc region. However, they do detect a compact source in the circumnuclear ring located about 0.6 arcsec (190 pc) to the north of the nucleus. Its luminosity and spectral shape are indicative of a SN origin, possibly a Type IIn or Ic. Their result favours the pure starburst scenario, even for the nucleus of NGC 1614. | [[https://academic.oup.com/mnrasl/article-lookup/doi/10.1093/mnrasl/slx085| Herrero-Illana et al. (2017)]] present deep dual-band 5.0- and 8.4 GHz EVN observations of NGC 1614, a local luminous infrared galaxy with a powerful circumnuclear starburst ring, and whose nuclear engine origin is still controversial. The aim was to detect and characterize any compact radio structures both in the nuclear region and in the circumnuclear ring. They did not find any compact source in the central 200 pc region. However, they do detect a compact source in the circumnuclear ring located about 0.6 arcsec (190 pc) to the north of the nucleus. Its luminosity and spectral shape are indicative of a SN origin, possibly a Type IIn or Ic. Their result favours the pure starburst scenario, even for the nucleus of NGC 1614. |
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| | {{ :evn:slx085fig2.jpeg?600 |}} |
| | **Figure 7.** |
| | EVN maps of the detected compact source at the C band (5.0 GHz; left-hand panel) and the X band (8.4 GHz; right-hand panel). |
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