Instituto de Física y Astronomía

y Centro de Astrofísica de Valparaíso

Calendario de eventos

Título: Catching galaxies in the act of stripping by Yara Jaffé

Jueves, 19. Abril 2018, 14:30
Accesos : 327

Charlista: Yara Jaffé

Institución: IFA, Universidad de Valparaíso

Ciudad/País: Valparaíso, Chile

Abstract: It is well known that galaxies falling into clusters can experience gas stripping due to ram pressure by the intra-cluster medium. The most spectacular examples, so-called "jellyfish galaxies", display extended tails of optically bright stripped material. I will present several theoretical and observational studies that aim to characterize the effect of gas stripping in galaxy evolution. In particular, I will demonstrate the efficiency of ram-pressure stripping by comparing semi-analytic models to HI observations of cluster galaxies, show a variety of jellyfish specimens observed by the large MUSE program GASP (the first large program dedicated to studying jellyfish galaxies), and present the discovery of a previously unknown connection between ram-pressure stripping and nuclear black hole activity.



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