English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Milky Way (MW) dwarf system presents two exceptional features, namely itforms a thick plane called the Vast Polar Structure (VPOS), and the two biggestdwarves, the Magellanic Clouds (MCs), are irregular galaxies that are almostnever seen at such a proximity from a luminous, L* galaxy. Investigating fromour modelling of M31 as a result of a former gas-rich major merger, we findthat one of the expected tidal tail produced during the event may have reachedthe MW. Such a coincidence may appear quite exceptional, but the MW indeed lieswithin the small volume delineated by the tidal tail at the present epoch. Inour scenario, most of the MW dwarves, including the MCs, may have been formedwithin a tidal tail formed during the former merger in the Local Group. Itleads to a fair reproduction of the VPOS as well as to a simple explanation ofthe MCs proximity to the MW, i.e. accounting for both exceptional features ofthe MW dwarf distributions. However this scenario predicts dark-matter free MWdwarves, which is in apparent contradiction with their intrinsically largevelocity dispersions. To be established or discarded, this requires to furtherinvestigate their detailed interactions with the MW potential.

A possible impact near the Milky Way of a former major merger in the Local Group