[Astronomy seminar] Astronomy seminar via zoom, 19 February 10:30: Iryna Kushniruk

[Astronomy seminar announcements]

Reminder: Talk by Iryna Kushniruk in 90 minutes / today at 10:30 am

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From: Matthias Samland
Sent: Monday, February 15, 2021 12:10 PM
Subject: Astronomy seminar via zoom, 19 February 10:30: Iryna Kushniruk

Dear all,

On Friday February 19 at 10:30 we will have the next Astronomy Seminar, remotely via zoom.

Our speaker is Iryna Kushniruk from Stockholm University.

Title: The nature of kinematic structures in the Galactic disk and halo

Abstract:

The Milky Way contains a complex plethora of kinematic structures, that is groups of stars that share a common motion. Although the origin of many kinematic groups are unknown and some widely debated, many of the known kinematic structures can be explained with one or several of the following hypotheses: dissolving star clusters; dynamical resonances between stars and the Galactic bar and/or spiral arms; extragalactic origin via merger events; or phase mixing due to galactic accretion events. Therefore, one of the approaches to try to understand the detailed structure of the Milky Way has been to search for and characterize such kinematic structures.

In this talk I will review main reasons why some stars form kinematic structures, I will show how to characterize some selected kinematic structures in the Milky Way’s disk and halo using large-scale astrometric and spectroscopic surveys, and I will explain how this information can be used to better understand Galaxy formation and evolution.

<https://www.northumbria.ac.uk/about-us/our-staff/j/natasha-jeffrey/>https://www.albanova.se/event/iryna_kushniruk/

We will have the colloquium using zoom. You will find the invitation at the end of this email.

Some guidelines:

1) Join the session with your microphone muted.

2) When you have a question, press the “raise hand button” and wait till you are asked to ask your question.

3) The session will be online from 10:20, please join at least a few minutes early as we would like to start 10:30 sharp.

We hope to see all of you there!

Matthias & Janet

Upcoming events:
26/02: Sheng Yang (Stockholm University, Sweden)
12/03: Davide Gizzi (Stockholm University, Sweden)
26/03: Sylvia Plöckinger (Leiden University, The Netherlands)
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Participation link: https://stockholmuniversity.zoom.us/j/64091714590

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