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The origin of the cold phase in the CGM is a highly debated question. Weinvestigate the contribution of satellite galaxies to the cold gas budget inthe circumgalactic medium (CGM)of a Milky Way-like host galaxy. We performcontrolled experiments with three different satellite mass distributions andidentify several mechanisms by which satellites can add cold gas to the CGM,including ram pressure stripping and induced cooling in the mixing layer of thestripped cold gas. These two mechanisms contribute a comparable amount of coldgas to the host CGM. We find that the less massive satellites ($\leq 10^9M_\odot$) not only lose all of their cold gas in a short period ($\sim$ 0.5-1Gyr), but their stripped cold clouds also mix with the hot CGM gas and getheated up quickly. However, stellar feedback from these less massive satellitescan hugely alter the fate of their stripped gas. Feedback speeds up thedestruction of the stripped cold clouds from these satellites by making themmore diffuse with more surface area. On the other hand, the more massivesatellites (LMC or SMC-like $\sim 10^{10} M_\odot$) can add cold gas to thetotal gas budget of the host CGM for several Gyrs.

Seeding the CGM: How Satellites Populate the Cold Phase of Milky Way Halos