A determination of the LMC dark matter subhalo mass using the MW halo stars in its gravitational wake

Abstract

Our goal is to study the gravitational effects caused by the passage of the Large Magellanic Cloud (LMC) in its orbit on the stellar halo of the Milky Way (MW). We employed the Gaia Data Release 3 to construct a halo tracers data set consisting of K-Giant stars and RR-Lyrae variables. Additionally, we have compared the data with a theoretical model to estimate the DM subhalo mass. We have improved the characterisation of the local wake and the collective response due to the LMC orbit. On the other hand, we have estimated for the first time the dark subhalo mass of the Large Magellanic Cloud, of the order of $1.7\times 10^{11}$ M${}_{\odot }$, comparable to previously reported values in the literature.

Accepted for publication on A&A

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Cited by in corpus (5)

• All-Sky Kinematics of the Distant Halo: The Reflex Response to the LMC
• Following the tidal trail: a history of modeling the Magellanic Stream
• Quantifying the Milky Way, LMC and their interaction using all-sky kinematics of outer halo stars
• Mapping the Distorted Dark Matter Distribution of the LMC-SMC System Prior to Milky Way Infall with Basis Function Expansions
• On the detection of stellar wakes in the Milky Way: a deep learning approach