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Colloquium

Everything you always wanted to know about jellyfish galaxies (and more)

2018-07-09
  • Speaker : Prof. Yara Jaffe (University of Valparaiso, Chile)
  • Date : 2018-09-12 16:00 ~ 17:00
  • Location : JYS331-2
  • Host : Yun-Kyeong Sheen

Galaxy evolution is driven by a complex combination of internal (nature) and external (nurture) processes. Gas stripping due to ram pressure arises as a galaxy falls into the dense intracluster medium of a galaxy cluster, and is among the most violent environmental experiences a galaxy can have. The most spectacular examples of ram-pressure stripping in action are the so-called "jellyfish galaxies", which display extended tails of optically bright stripped material. I will review several theoretical and observational studies that aim to characterize the effect of gas stripping in galaxy evolution, including the latest results of the large MUSE program GASP, dedicated to studying jellyfish galaxies. Finally, I will, present the recent discovery of a previously unknown connection between ram-pressure stripping and nuclear black hole activity.