Isle of Wight What's On Guide: Events OnTheWight

Astronomy Presentation

Friday 28 7.30pmJanuary

Talk

Virtual / Online

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Astronomy Presentation

Source https://www.facebook.com/events/986192721990159/

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Zoom Presentation - Galaxy Bars and their Role in Galactic Evolution

Speaker: Dr Justus Neumann Venue: ZOOM presentation only. For VAS members, please use the link included in the latest copy of New Zenith. For visitors, please click on the Eventbrite link to obtain tickets and joining instructions (for a modest donation).

About the talk: Galaxies are the main building blocks of the Universe. Millions of them have been observed and catalogued to date. They come in all kinds of colours and shapes with different dynamics, stellar populations and gaseous content - fossil records of their own evolution. How do galaxies transform from clumpy, turbulent and star-forming objects to smooth spheroidals or to regularly rotating discs with beautiful structures such as rings, spirals and bars? A large number of today's characteristics of galaxies are generated during a phase of relatively slow internal so-called 'secular' evolution. In this talk, I will present the curiously looking but very common stellar structures: galactic bars. How do they form, what are they and why are they considered key drivers of secular galaxy evolution?

About the speaker: I am an observational astronomer working as postdoctoral research fellow at the Institute of Cosmology and Gravitation at the University of Portsmouth. I received my PhD at the University of Potsdam in Germany. I study the structure and evolution of galaxies using large observational data sets from instruments called integral field spectrographs. The main focus of my research is to develop a better understanding of the internal physical processes that shape galaxies, by analysing their structure, their stellar populations and their dynamics.

Image: galaxy NGC 1300 (credit: "NASA, ESA and The Hubble Heritage Team")