[Astronomy seminar] Astronomy departmental seminar Friday February 24th - Martin Rey (Oxford)

[Astronomy seminar announcements]

Dear all,

The next SU astronomy departmental seminar will take place on Friday February 24th at 10:30am in room FC61 (AlbaNova building, 6th floor) and on zoom (https://stockholmuniversity.zoom.us/s/61002076352).

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Speaker: Martin Rey (Oxford)
Title: Insights into the faint and diffuse universe of galaxies
<https://www.albanova.se/event/astronomy-departmental-seminar-kelley-hess-csic/>https://www.albanova.se/event/astronomy-department-seminar-martin-rey-oxford/

Abstract:
Recent  advances have transformed our understanding of galaxies at the low  surface brightness frontier. New imaging capabilities have unveiled a new population of ever smaller  "ultra-faint" dwarf galaxies, while astrometric measurements from the  GAIA mission is revealing a growing number of chemo-dynamical structures in the diffuse outskirts of our Milky Way. Such low-mass, feeble objects are highly sensitive to the physical processes  that shape the cosmological growth of galaxies in our Universe,  providing an ideal laboratory for testing galaxy formation models and  the nature of dark matter. This same sensitivity, however, also generates extended scatter in their properties and uncertainties in  model predictions, making their interpretation challenging.

I will showcase results  from the new approach of "genetically modified" cosmological simulations of  galaxies, allowing us to uniquely separate the role of cosmological  assemblies and physical models in a galaxy's final observables. I will  show how this unique combination of abilities enables us to extract the expected diversity in the stellar and gaseous  properties of the faintest galaxies in our Universe and make testable  predictions for near-future photometric and radio surveys. I will then  show how this approach can provide novel and original insights into the formation of our Milky Way, opening a new pathway  to interpret Galactic observations and to constrain the formation of our  Galaxy in a fully cosmological context.

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We look forward to seeing many of you there. Thanks!

Eliot and Kris


Upcoming Events:

2023-03-03  No Seminar (Sportlov)
2023-03-10  Ryan Boukrouche (SU)
2023-03-17  Mansi Kasliwal (Caltech) - Zoom only


The calendar for later planned seminars is available here<https://ebox.su.se/owa/calendar/75d76b284ca84db1a85c4e021d1133e8@astro.su.se/22bc11d486d04afaa009a9730dd065d65524176602456481514/calendar.html>.
(Please note that calendar can be subject to updates)

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Join Zoom Meeting:
https://stockholmuniversity.zoom.us/s/61002076352
Meeting ID: 610 0207 6352

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