Repositório Digital

A- A A+

On the nature of the near-UV extended light in Seyfert galaxies

.

On the nature of the near-UV extended light in Seyfert galaxies

Mostrar registro completo

Estatísticas

Título On the nature of the near-UV extended light in Seyfert galaxies
Autor Muñoz Marín, Victor M.
Storchi-Bergmann, Thaisa
González Delgado, Rosa M.
Schmitt, Henrique Roberto
Spinelli, Patrícia Figueiro
Pérez Jiménez, Enrique
Fernandes Junior, Roberto Cid
Abstract We study the nature of the extended near-UV emission in the inner kiloparsec of a sample of 15 Seyfert (Sy) galaxies which have both near-UV (F330W) and narrow-band [O III] highresolution Hubble images. For the majority of the objects, we find a very similar morphology in both bands. From the [O III] images, we construct synthetic images of the nebular continuum plus the emission-line contribution expected through the F330W filter, which can be subtracted from the F330W images. We find that the emission of the ionized gas dominates the near-UV extended emission in half of the objects. A further broad-band photometric study, in the bands F330W (U), F547M (V) and F160W (H), shows that the remaining emission is dominated by the underlying galactic bulge contribution. We also find a blue component whose nature is not clear in four out of 15 objects. This component may be attributed to scattered light from the active galactic nuclei, to a young stellar population in unresolved star clusters, or to early disrupted clusters. Star-forming regions and/or bright off nuclear star clusters are observed in 4/15 galaxies of the sample.
Contido em Monthly notices of the royal astronomical society. London. Vol. 399, no. 2 (Oct. 2009), p. 842-860
Assunto Espectroscopia otica
Galáxias ativas
Galaxias seyfert
Nucleo galatico
Polarimetria
[en] Galaxies: nuclei
[en] Galaxies: Seyfert
[en] Ultraviolet: galaxies
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/90457
Arquivos Descrição Formato
000725718.pdf (1.209Mb) Texto completo (inglês) 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.