@article{339ab3a929d94fe9bd7ff8cd281e627d,
title = "Investigating the dusty torus of Seyfert galaxies using SOFIA/FORCAST photometry",
abstract = "We present 31.5 μm imaging photometry of 11 nearby Seyfert galaxies observed from the Stratospheric Observatory For Infrared Astronomy (SOFIA) using the Faint Object infraRed CAmera for the SOFIA Telescope (FORCAST). We tentatively detect extended 31 μm emission for the first time in our sample. In combination with this new data set, subarcsecond resolution 1-18 μm imaging and 7.5-13 μm spectroscopic observations were used to compute the nuclear spectral energy distribution (SED) of each galaxy. We found that the turnover of the torus emission does not occur at wavelengths ≤31.5 μm, which we interpret as a lower-limit for the wavelength of peak emission. We used CLUMPY torus models to fit the nuclear infrared (IR) SED and infer trends in the physical parameters of the AGN torus for the galaxies in the sample. Including the 31.5 μm nuclear flux in the SED (1) reduces the number of clumpy torus models compatible with the data, and (2) modifies the model output for the outer radial extent of the torus for 10 of the 11 objects. Specifically, six (60 per cent) objects show a decrease in radial extent while four (40 per cent) show an increase. We find torus outer radii ranging from <1 to 8.4 pc.",
keywords = "Galaxies: active, Galaxies: nuclei, Galaxies: seyfert",
author = "L. Fuller and E. Lopez-Rodriguez and C. Packham and C. Ramos-Almeida and A. Alonso-Herrero and Levenson, {N. A.} and J. Radomski and K. Ichikawa and I. Garc{\'i}a-Bernete and O. Gonz{\'a}lez-Mart{\'i}n and T. D{\'i}az-Santos and M. Mart{\'i}nez-Paredes",
note = "Funding Information: This work is based on observations made with the NASA/DLR SOFIA. SOFIA is jointly operated by the Universities Space Research Association, Inc. (USRA), under NASA contract NAS2-97001, and the Deutsches SOFIA Institut (DSI) under DLR contract 50 OK 0901 to the University of Stuttgart. Financial support for this work was provided by NASA through award 002_35 and 04_0048 issued by USRA. ELR and CP acknowledge support from the University of Texas at San Antonio. CP acknowledges support from NSF-0904421 grant. CRA is supported by a Raḿon y Cajal Fellowship (RYC-2014-15779). AA-H acknowledges financial support from the Spanish Plan Nacional de Astronoḿia y Astrofis {\'i}ca under grants AYA2012-3144, which is partly funded by the FEDER program, and AYA2015-64346-C2-1-P. KI acknowledges support from JSPS Grant-in-Aid for Scientific Research (grant number 40756293).NALis supported by the GeminiObservatory, which is operated by the Association of Universities for Research in Astronomy, Inc., on behalf of the international Gemini partnership of Argentina, Australia, Brazil, Canada, Chile, and the United States of America. IGB acknowledges financial support from the Instituto de Astrof{\'i}sica de Canarias through Fundac{\'i}on La Caixa. TD-S acknowledges support from ALMA-CONICYT project 31130005 and FONDECYT 1151239. We would also like to acknowledge the contributions of Miguel Charcos-Llorens. Publisher Copyright: {\textcopyright} 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.",
year = "2016",
month = nov,
day = "1",
doi = "10.1093/mnras/stw1780",
language = "English",
volume = "462",
pages = "2618--2630",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",
}