20-24 March 2023
Haus H, Telegrafenberg
Europe/Berlin timezone

Scaling up the Milky Way

20 Mar 2023, 16:45
40m
Haus H, Telegrafenberg

Haus H, Telegrafenberg

Potsdam, Germany
Invited review talk SESSION 2 : Sizes, Masses, and Formation histories of the Milky Way and of Andromeda SESSION 2 : Sizes, Masses, and Formation histories of the Milky Way and of Andromeda

Speaker

Ana Bonaca (Carnegie Observatories)

Description

Our Galaxy, the Milky Way, provides us with a unique opportunity to measure the 3D shape of its dark-matter halo, thus testing the properties of the dark sector and the fundamental cosmological model. Until recently, however, these efforts have been thwarted by the scarcity of observational data, especially in the outer halo, as well as reliance on the assumption of a dynamical equilibrium, resulting in estimates of the total Milky Way mass spanning a factor of a few. I will discuss how the 6D phase-space data from the Gaia mission and ground-based surveys, combined with novel modeling methods, have been used to precisely map not just the Milky Way's halo at the present, but also reconstruct its accretion history.

Do you plan to attend the symposium in-person or virtually? in-person

Primary author

Ana Bonaca (Carnegie Observatories)

Presentation Materials

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