Seminari


Seminars are organized jointly by the Trieste Astronomical Observatory (INAF/OATS) and the Astronomy Unit of the Physics Dept. of the Trieste University (UNI/TS). They usually take place on Wednesdays at 11:30, in the seminar room (Sala Ovale) of Villa Bazzoni in via Bazzoni 2, TS.

 

Tue, DEC 1, 2020 -- ONLINE seminar at 11:30AM -- INAF Google meet
SPEAKER: Freeke Van de Voort (School of Physics and Astronomy, Cardiff University, Cardiff, UK)
TITLE: Cosmic gas flows in the circumgalactic medium around Milky Way-like galaxies


ABSTRACT: Galaxies are intimately connected to the environments they live in. The haloes around them contain the gas reservoir from which the galaxies grow, while galactic outflows heat and enrich this 'circumgalactic medium' (CGM). Using 'zoom-in' cosmological, magnetohydrodynamical simulations, I will discuss the physical and observable properties of the gas around galaxies, focusing on Milky Way-like systems. The simulations use a new refinement technique to reach orders of magnitude higher resolution in the CGM than the current state-of-the-art. These spatially refined simulations show that the CGM has more 'cool' gas than previously thought, which strongly affects predicted observables in the CGM: The neutral hydrogen column densities are greatly enhanced, more in line with observations. Furthermore, I will show and discuss how the presence of magnetic fields alters the gas flows into and out of galaxies, which results in less (metal) mixing and higher gas fractions inside the halo and changes the properties of the CGM. Throughout, I will also briefly discuss the effects on the galaxies themselves. 

contact:  Valentina D'Odorico
 
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ORGANIZATION:

Seminar organizers:
Elena Mason: This email address is being protected from spambots. You need JavaScript enabled to view it.
Valentina D'Odorico: This email address is being protected from spambots. You need JavaScript enabled to view it.
Alex Saro: This email address is being protected from spambots. You need JavaScript enabled to view it.

Seminar logistic:
Gabriella Schiulaz and Simonetta Fabrizio: This email address is being protected from spambots. You need JavaScript enabled to view it.

Should you wish to give a talk at OATS, please feel free to contact the organizers.
Should you be one of our next speakers and need any travel and/or logistic information, please contact our Seminar logistic.
Please find here the Speaker's Vademecum, in preparation for your coming visit at OATS.

 

Something to keep in mind whenever you talk and write: Science is getting harder to read