Online talk «Ghostbusters»: Hunting ghostly ultra-diffuse galaxies

NGC 1052-DF2, an ultra diffuse galaxy.
Anna Farré-Mateu, ICCUB
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The astronomer and researcher Anna Ferré-Mateu will give, next Wednesday, October 21, the conference "Ghostbusters": Hunting ghostly ultra-diffuse galaxies, organized by the Astronomical Association of Sabadell.

You can live stream the talk through their YouTube channel. Find all the information at their website


Only once in a generation is there a chance to reveal for the first time the basic properties of a new type of galaxy. With the arrival of more sensitive instruments in today's large telescopes, a completely new Universe is being revealed, a low luminosity Universe that is populated by countless new types of galaxies. One of these cases is the so-called ultra-diffuse galaxies (UDGs). With measurements of our Milky Way, but with only 1% of their mass in stars, these fuzzy galaxies have proven to be a constant source of controversy. Thus, many astronomers have been quick to try to understand the nature and formation pathways of these galaxies. In this talk, we will undertake the adventure of chasing these intriguing phantom galaxies with the aim of revealing what they mean in the larger scheme of galaxy evolution.


About the author

Anna Ferré-Mateu is an astronomer and "La Caixa" postdoctoral researcher at our institute, where she is one of the members of the Galaxy Structure and Evolution research group. The group’s researchers study both galactic astronomy – inside the Milky Way- and extragalactic astronomy – beyond the Milky Way. This includes a large array of objects ranging from dwarf galaxies, quasars and clusters of galaxies, and spanning the last 13 billion years of the history of the Universe. The research in extragalactic astronomy includes the modelling of galaxy’s formation processes, the study of intergalactic matter and making predictions based on analytical models.

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