AUTHOR=Ramírez Edgar A. , Aretxaga Itziar , Tadhunter Clive N. , Lopez-Rodriguez Enrique , Packham Chris 

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

JOURNAL=Frontiers in Astronomy and Space Sciences

VOLUME=4

YEAR=2017

URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2017.00052

DOI=10.3389/fspas.2017.00052

ISSN=2296-987X

ABSTRACT=<p>We present the analysis of near-infrared <italic>Hubble Space Telescope</italic> imaging of 10 Fanaroff Riley II powerful radio galaxies at low redshift (0.03 &lt; <italic>z</italic> &lt; 0.11) optically classified as narrow-line radio galaxies. The photometric properties of the host galaxy are measured using <sc>galfit</sc>, 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 <italic>Spitzer</italic> spectra of our sample, we suggest properties of the dust size of the torus.</p>