skip to main content

SciTech ConnectSciTech Connect

Title: The host galaxy of the gamma-ray narrow-line Seyfert 1 galaxy 1H 0323+342

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. Near-infrared and optical images are used to investigate the structural properties of the host galaxy of 1H 0323+342; this together with optical spectroscopy allows us to examine its black hole mass. Based on two-dimensional (2D) multiwavelength surface-brightness modeling, we find that statistically, the best model fit is a combination of a nuclear component and a Sérsic profile (n ∼ 2.8). However, the presence of a disk component (with a small bulge n ∼ 1.2) also remains 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 this structure corresponds to an asymmetric ring, likely associated with a recent violent dynamical interaction. We discuss our results in the context of relativistic jet production and galaxy evolution.
Authors:
; ; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ;  [6]
  1. Instituto Nacional de Astrofísica Óptica y Electrónica (INAOE), Apartado Postal 51 y 216, 72000 Puebla (Mexico)
  2. Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, FI-21500 Piikkiö (Finland)
  3. Facultad de Ciencias de la Tierra y del Espacio (FACITE) de la Universidad Autónoma de Sinaloa, Blvd. de la Americas y Av. Universitarios S/N, Ciudad Universitaria, C.P. 80010, Culiacán Sinaloa (Mexico)
  4. Instituto de Astronomía, Universidad Nacional Autónoma de México, Ap. 70-264, 04510 DF (Mexico)
  5. Instituto de Astrofísica de Andalucía-CSIC, E-18008 Granada (Spain)
  6. Tuorla Observatory, Department of Physics and Astronomy, University of Turku, FI-20100 Turku (Finland)
Publication Date:
OSTI Identifier:
22370286
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 795; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASYMMETRY; BLACK HOLES; BRIGHTNESS; COSMIC GAMMA SOURCES; FOURIER ANALYSIS; GALAXIES; GAMMA RADIATION; IMAGES; INTERACTIONS; MASS; RELATIVISTIC RANGE; SATELLITES; SEYFERT GALAXIES; SIMULATION; SPECTROSCOPY; STAR EVOLUTION; SURFACES; TELESCOPES; TWO-DIMENSIONAL CALCULATIONS