Direct HST Dust Lane Detection in Powerful Narrow-Line Radio Galaxies

Direct HST Dust Lane Detection in Powerful Narrow-Line Radio Galaxies

We present the analysis of near-infrared Hubble Space Telescope imaging of 10 Fanaroff Riley II powerful radio galaxies at low redshift (0.03 < z < 0.11) optically classified as narrow-line radio galaxies. The photometric properties of the host galaxy are measured using galfit, and com...

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Bibliographic Details
Main Authors: Edgar A. Ramírez, Itziar Aretxaga, Clive N. Tadhunter, Enrique Lopez-Rodriguez, Chris Packham
Format: Article
Language:English
Published: Frontiers Media S.A. 2017-11-01
Series:Frontiers in Astronomy and Space Sciences
Subjects:
active galactic nuclei
infrared imaging
dust grains
narrow-line radio galaxy
3CRR
Online Access:http://journal.frontiersin.org/article/10.3389/fspas.2017.00052/full
Description
Summary:We present the analysis of near-infrared Hubble Space Telescope imaging of 10 Fanaroff Riley II powerful radio galaxies at low redshift (0.03 < z < 0.11) optically classified as narrow-line radio galaxies. The photometric properties of the host galaxy are measured using galfit, and compared with those from the literature. Our high resolution near-infrared observations provide new and direct information on the central kpc-scale dust lanes in our sample that could be connected to the pc-scale torus structure. Moreover, analyzing the infrared spectrograph Spitzer spectra of our sample, we suggest properties of the dust size of the torus.
ISSN:2296-987X

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