Speaker

Robin Chisholm

University of Wisconsin, Madison

Abstract

The Magellanic System is vital to our understanding of the ongoing formation and evolution of the Local Group. Recent indirect measurements of a high (> 10^11Msolar) mass for the Large Magellanic Cloud (LMC) have led to major revisions in our previous understanding of the Magellanic

System. Luccini et al predicted the existence of a warm-hot corona (T ∼ 10^5.4 K) enveloping theLMC as part of the multi-phase circumgalactic medium (CGM) surrounding the Magellanic System, which was subsequently observed by Krishnarao et al. Using data from the HESTIA project, a suite of ultra-high-resolution hydrodynamical Local Group simulations embedded in simulated local cosmography, we find a corona enveloping the LMC-analog in several of the runs, with similar virial temperature and extent as observed. We are also able to find analogous features to other Magellanic structures, such as the Bridge. These findings provide further evidence for the first-infall model of Magellanic System and offer possible histories and origins for the Corona.

Scientific theme

Large Magellanic Cloud, circumgalactic medium, Small Magellanic Cloud, Magellanic Corona,

dwarf galaxies