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arXiv · 1409.2518

The host-galaxy of the gamma-ray Narrow-line Seyfert 1 galaxy 1H~0323+342

J. León-Tavares·J. Kotilainen·V. Chavushyan·C. Añorve·I. Puerari·I. Cruz-González·V. Patiño-Álvarez·S. Antón·A. Carramiñana·L. Carrasco·J. Guichard·K. Karhunen·A. Olguín-Iglesias·J. Sanghvi·J. R. Valdes
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Abstract

We present optical and near infrared (NIR) imaging data of the radio-loud Narrow-line Seyfert 1 galaxy 1H 0323+342, which shows intense and variable gamma-ray activity discovered by the Fermi satellite with the Large Area Telescope. NIR and optical images are used to investigate the structural properties of the host galaxy of 1H 0323+342; this together with optical spectroscopy allowed us to examine its black hole mass. Based on the 2D multiwavelength surface brightness modeling, we find that, statistically, the best model fit is a combination of a nuclear component and a S\'ersic profile (n~2.8). However, the presence of a disc component (with a small bulge n~1.2) remains also a possibility and cannot be ruled out with the present data. Although at first glance a spiral-arm like structure is revealed in our images, a 2D Fourier analysis of the imagery suggests that such structure corresponds to an asymmetric ring, likely associated to a recent violent dynamical interaction. We discuss our results on the context of relativistic jets production and galaxy evolution.

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J. León-Tavares, J. Kotilainen, V. Chavushyan, C. Añorve, I. Puerari, I. Cruz-González, V. Patiño-Álvarez, S. Antón, A. Carramiñana, L. Carrasco, J. Guichard, K. Karhunen, A. Olguín-Iglesias, J. Sanghvi, J. R. Valdes. 2014-09-08. The host-galaxy of the gamma-ray Narrow-line Seyfert 1 galaxy 1H~0323+342. https://doi.org/10.1088/0004-637x/795/1/58

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