Exploring the Mid-infrared SEDs of Six AGN Dusty Torus Models. II. The Data

Autor: Deborah Dultzin, I. García-Bernete, Cesar Victoria-Ceballos, Donaji Esparza-Arredondo, M. Martínez-Paredes, Cristina Ramos Almeida, Omaira González-Martín, Isabel Márquez, J. M. Rodríguez-Espinosa, Natalia Osorio-Clavijo, Alice Pasetto, Josefa Masegosa
Přispěvatelé: Universidad Nacional Autónoma de México, Ministerio de Economía y Competitividad (España), European Commission, Ministerio de Ciencia, Innovación y Universidades (España), Consejo Nacional de Ciencia y Tecnología (México)
Rok vydání: 2019
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab3e4f
Popis: This is the second in a series of papers devoted to exploring a set of six dusty models of active galactic nuclei (AGN) with available spectral energy distributions. These models are the smooth torus by Fritz et al., the clumpy torus by Nenkova et al., the clumpy torus by Hönig & Kishimoto, the two-phase torus by Siebenmorgen et al., the two-phase torus by Stalevski et al., and the wind model by Hönig & Kishimoto. The first paper explores discrimination among models and the parameter restriction using synthetic spectra. Here we perform spectral fitting of a sample of 110 AGN drawn from the Swift/BAT survey with Spitzer/IRS spectroscopic data. The aim is to explore which is the model that describes better the data and the resulting parameters. The clumpy wind-disk model by Hönig & Kishimoto provides good fits for ∼50% of the sample, and the clumpy torus model by Nenkova et al. is good at describing ∼30% of the objects. The wind-disk model by Hönig & Kishimoto is better for reproducing the mid-infrared spectra of type 1 Seyferts (with 60% of the type 1 Seyferts well reproduced by this model compared to the 10% well represented by the clumpy torus model by Nenkova et al.), while type 2 Seyferts are equally fitted by both models (roughly 40% of the type 2 Seyferts). Large residuals are found irrespective of the model used, indicating that the AGN dust continuum emission is more complex than predicted by the models or that the parameter space is not well sampled. We found that all the resulting parameters for our AGN sample are roughly constrained to 10%-20% of the parameter space. Contrary to what is generally assumed, the derived outer radius of the torus is smaller (reaching up to a factor of ∼5 smaller for 10 pc tori) for the smooth torus by Fritz et al. and the two-phase torus by Stalevski et al. than the one derived from the clumpy torus by Nenkova et al. Covering factors and line-of-sight viewing angles strongly depend on the model used. The total dust mass is the most robust derived quantity, giving equivalent results for four of these models.© 2019 The American Astronomical Society. All rights reserved.
This research is mainly funded by the UNAM PAPIIT project IA103118 (PI OG-M). M.M.-P. acknowledges support by KASI postdoctoral fellowships. I.M. and J.M. acknowledge financial support from the research project AYA2016-76682-C3-1-P (AEI/FEDER, UE). J.M.R.-E. acknowledges support from the Spanish Ministry of Science under grants AYA2015-70498-C2-1 and AYA2017-84061-P. I.G.-B. acknowledges financial support from the Spanish Ministry of Science and Innovation (MICINN) through projects PN AYA2015-64346-C2-1-P and AYA2016-76682-C3-2-P. I.M. and J.M. acknowledge financial support from the State Agency for Research of the Spanish MCIU through the >Center of Excellence Severo Ochoa> award for the Instituto de Astrofisica de Andalucia (SEV-2017-0709). D.E.-A. acknowledges support from a CONACYT scholarship. D.-D. acknowledges PAPIIT UNAM support from grant IN113719.
Databáze: OpenAIRE
Externí odkaz: