On the origin of X-ray oxygen emission lines in obscured AGN

We present the Catalogue of High Resolution Spectra of Obscured Sources (CHRESOS) from the XMM-Newton Science Archive. It comprises the emission-line luminosities of H- and He-like transitions from C to Si, and the Fe 3C and Fe 3G L-shell ones. Here, we concentrate on the soft X-ray OVII (f) and OVI...

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Detalles Bibliográficos
Autores principales: Reynaldi, María Victoria, Guainazzi, Matteo, Bianchi, Stefano, Andruchow, Ileana, García, Federico, Salerno, Nicolás, López, Iván Ezequiel
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Astronomía
galaxies: active
galaxies: nuclei
galaxies: Seyfert
galaxies: starburst
X-rays: galaxies
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125650
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125650
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
galaxies: active
galaxies: nuclei
galaxies: Seyfert
galaxies: starburst
X-rays: galaxies
spellingShingle Astronomía
galaxies: active
galaxies: nuclei
galaxies: Seyfert
galaxies: starburst
X-rays: galaxies
Reynaldi, María Victoria
Guainazzi, Matteo
Bianchi, Stefano
Andruchow, Ileana
García, Federico
Salerno, Nicolás
López, Iván Ezequiel
On the origin of X-ray oxygen emission lines in obscured AGN
topic_facet Astronomía
galaxies: active
galaxies: nuclei
galaxies: Seyfert
galaxies: starburst
X-rays: galaxies
description We present the Catalogue of High Resolution Spectra of Obscured Sources (CHRESOS) from the XMM-Newton Science Archive. It comprises the emission-line luminosities of H- and He-like transitions from C to Si, and the Fe 3C and Fe 3G L-shell ones. Here, we concentrate on the soft X-ray OVII (f) and OVIII Lyα emission lines to shed light on to the physical processes with which their formation can be related to active galactic nucleus (AGN) versus star-forming regions. We compare their luminosity with that of two other important oxygen key lines [O III]lambda 5007 Å, in the optical, and [O IV] 25.89 mu m, in the infrared (IR). We also test OVII (f) and OVIII Lyα luminosities against that of continuum bands in the IR and hard X-rays, which point to different ionization processes. We probe into those processes by analysing photoionization and collisional ionization model predictions upon our lines. We show that both scenarios can explain the formation and observed intensities of OVII (f) and OVIII Lyα. By analysing the relationships between OVII (f) and OVIII Lyα, and all other observables: [OIII]lambda 5007 Å, [O IV] 25.89 mu m emission lines, and mid-infrared (MIR) 12 mu m, far-infrared (FIR) 60 and 100 mu m, 2-10 and 14-195 keV continuum bands, we conclude that the AGN radiation field is mainly responsible of the soft X-ray oxygen excitation.
format Articulo
Preprint
author Reynaldi, María Victoria
Guainazzi, Matteo
Bianchi, Stefano
Andruchow, Ileana
García, Federico
Salerno, Nicolás
López, Iván Ezequiel
author_facet Reynaldi, María Victoria
Guainazzi, Matteo
Bianchi, Stefano
Andruchow, Ileana
García, Federico
Salerno, Nicolás
López, Iván Ezequiel
author_sort Reynaldi, María Victoria
title On the origin of X-ray oxygen emission lines in obscured AGN
title_short On the origin of X-ray oxygen emission lines in obscured AGN
title_full On the origin of X-ray oxygen emission lines in obscured AGN
title_fullStr On the origin of X-ray oxygen emission lines in obscured AGN
title_full_unstemmed On the origin of X-ray oxygen emission lines in obscured AGN
title_sort on the origin of x-ray oxygen emission lines in obscured agn
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/125650
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bdutipo_str Repositorios
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