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The host galaxies of luminous SDSS type 2 active galactic nuclei at z ∼0.3-0.4

Juan José Urbano-Mayorgas
Centro de AstroBiología, CAB-Torrejón, Spain


The nuclear activity in galaxies has become a topic of major importance in studies of galaxy formation and evolution. By characterizing the nature of the galaxies hosting the most powerful active galactic nuclei (AGN) we aim at understanding in more depth the role nuclear activity plays in the life cycle of all massive galaxies.
For this, we have studied the morphological and structural properties of the host galaxies associated with 58 luminous type 2 AGN (high luminosity Seyfert 2 and obscured QSO2). Our study is based on high spatial resolution optical HST images. We focus on topics such as the galaxy types and structure, the incidence of merger/interactions features and possible correlations with AGN power proxies. In this talk we will present the methodology, results and a discussion about the importance of parametric studies in morphological classification of galaxies. We will put them in context of related works on type 1 and type 2 AGN.

2017 September 26, 15:00

Observatório Astronómico de Lisboa (Seminar room)
Tapada da Ajuda, 1349-018 Lisboa

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia