Ripping Apart at the Seams: The Network of Stripped Gas Surrounding M86
  We present a new study of the Virgo Cluster galaxies M86, M84, NGC 4338, and
NGC 4438 using a mosaic of five separate pointings with XMM-Newton. Our
observations allow for robust measurements of the temperature and metallicity
structure of each galaxy along with the entire ~ 1 degree region between these
galaxies. When combined with multiwavelength observations, the data suggest
that all four of these galaxies are undergoing ram pressure stripping by the
Intracluster Medium (ICM). The manner in which the stripped gas trailing the
galaxies interacts with the ICM, however, is observably distinct. Consistent
with previous observations, M86 is observed to have a long tail of ~ 1 keV gas
trailing to the north-west for distances of ~ 100-150 kpc. However, a new site
of ~ 0.6 keV thermal emission is observed to span to the east of M86 in the
direction of the disturbed spiral galaxy NGC 4438. This region is spatially
coincident with filaments of H-alpha emission, likely originating in a recent
collision between the two galaxies. We also resolve the thermodynamic structure
of stripped ~ 0.6 keV gas to the south of M84, suggesting that this galaxy is
undergoing both AGN feedback and ram pressure stripping simultaneously. These
four sites of stripped X-ray gas demonstrate that the nature of ram pressure
stripping can vary significantly from site to site.
