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http://hdl.handle.net/20.500.12386/24388
Titolo: | [O III] line properties in two samples of radio-emitting narrow-line Seyfert 1 galaxies | Autori: | Berton, M. FOSCHINI, LUIGI Ciroi, S. Cracco, V. La Mura, G. Di Mille, F. Rafanelli, P. |
Data pubblicazione: | 2016 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 591 | Abstract: | The [O III] λλ 4959, 5007 lines are a useful proxy to test the kinematic of the narrow-line region (NLR) in active galactic nuclei (AGN). In AGN, and particularly in narrow-line Seyfert 1 galaxies (NLS1s) these lines often show few peculiar features, such as blue wings, often interpreted as outflowing component, and a shift - typically toward lower wavelengths - of the whole spectroscopic feature in some exceptional sources, the so-called blue outliers, which are often associated to strong winds. We investigated the incidence of these peculiarities in two samples of radio-emitting NLS1s, one radio-loud and one radio-quiet. We also studied a few correlations between the observational properties of the [O III] lines and those of the AGN. Our aim was to understand the difference between radio-quiet and radio-loud NLS1s, which may in turn provide useful information on the jet formation mechanism. We find that the NLR gas is much more perturbed in radio-loud than in radio-quiet NLS1s. In particular the NLR dynamics in γ-ray emitting NLS1s appears to be highly disturbed, and this might be a consequence of interaction with the relativistic jet. The less frequently perturbed NLR in radio-quiet NLS1s suggests instead that these sources likely do not harbor a fully developed relativistic jet. Nonetheless blue-outliers in radio-quiet NLS1s are observed, and we interpret them as a product of strong winds. | URI: | http://hdl.handle.net/20.500.12386/24388 | URL: | https://www.aanda.org/articles/aa/abs/2016/07/aa27056-15/aa27056-15.html https://arxiv.org/abs/1506.05800 |
ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201527056 | Bibcode ADS: | 2016A&A...591A..88B | Fulltext: | open |
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