Repositório Digital

A- A A+

Star formation in AGNs at the hundred parsec scale using MIR high-resolution images

.

Star formation in AGNs at the hundred parsec scale using MIR high-resolution images

Mostrar registro completo

Estatísticas

Título Star formation in AGNs at the hundred parsec scale using MIR high-resolution images
Autor Dutra, Daniel Ruschel
Rodríguez Espinosa, Jose Miguel
Gonzalez Martin, Omaira
Pastoriza, Miriani Griselda
Riffel, Rogério
Abstract It has been well established in the past decades that the central black hole masses of galaxies correlate with dynamical properties of their harbouring bulges. This notion begs the question of whether there are causal connections between the active galactic nucleus (AGN) and its immediate vicinity in the host galaxy. In this paper, we analyse the presence of circumnuclear star formation in a sample of 15 AGN using mid-infrared observations. The data consist of a set of 11.3 μm polycyclic aromatic hydrocarbon emission and reference continuum images, taken with ground-based telescopes, with sub-arcsecond resolution. By comparing our star formation estimates with AGN accretion rates, derived from X-ray luminosities, we investigate the validity of theoretical predictions for the AGN–starburst connection. Our main results are: (i) circumnuclear star formation is found, at distances as low as tens of parsecs from the nucleus, in nearly half of our sample (7/15); (ii) star formation luminosities are correlated with the bolometric luminosity of the AGN (LAGN) only for objects with LAGN ≥ 1042 erg s−1; (iii) low-luminosity AGNs (LAGN < 1042 erg s−1) seem to have starburst luminosities far greater than their bolometric luminosities.
Contido em Monthly notices of the Royal Astronomical Society. Oxford. Vol. 466, no. 3 (Apr. 2017), p. 3353–3363
Assunto Formacao de estrelas
Galáxias ativas
Luminosidade
[en] Galaxies: active
[en] Galaxies: evolution
[en] Galaxies: nuclei
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/159739
Arquivos Descrição Formato
001022488.pdf (2.217Mb) Texto completo Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.