Description (wikipedia)

Elliptical galaxy in the center of the picture: Messier 86 (also known as M86 or NGC 4406) is an elliptical or lenticular galaxy in the constellation Virgo. It was discovered by Charles Messier in 1781. M86 lies in the heart of the Virgo Cluster of galaxies and forms a most conspicuous group with another large galaxy known as Messier 84. It displays the highest blue shift of all Messier objects, as it is, net of its other vectors of travel, approaching the Milky Way at 244 km/s. This is due to both galaxies falling roughly towards the center of the Virgo cluster from opposing ends.

Irregular galaxy on the right hand side of the picture: NGC 4438 is the most curious interacting galaxy in the Virgo Cluster, due to the uncertainty surrounding the energy mechanism that heats the nuclear source; this energy mechanism may be a starburst region, or a black hole-powered active galactic nucleus (AGN). Both hypotheses are currently under investigation by astronomers.This galaxy shows a highly distorted disk, including long tidal tails due to the gravitational interactions with other galaxies in the cluster and its companion. The aforementioned features explain why sources differ as to its classification, defining it either as a lenticular or spiral galaxy. NGC 4438 also shows signs of a past, extended - but modest - starburst,[4] a considerable deficiency of neutral hydrogen, as well as a displacement of the components of its interstellar medium - atomic hydrogen, molecular hydrogen, interstellar dust, and hot gas - in the direction of NGC 4435. This observation suggests both a tidal interaction with NGC 4435 and the effects of ram-pressure stripping[5] as NGC 4438 moves at high speed through Virgo's intracluster medium, increased by the encounter between both galaxies.[6][7]

Personal note
To process this picture I followed the instructions of Ronald Brecher from his The Astroimaging Channel presentation on March 6, 2022. It came out nicely and I will use this from now on as the basis of my LRGB workflow. Unfortunately the type of old elliptical galaxies like in this picture do not have spectacular colors. The eyes galaxies on the right hand site however provide a lot of interesting structure to look at.

Processing workflow
Pixinsight: WBPP, NormalizeScaleGradient, DBE, Syntethic Luminance with Lum+RGB, DynamicCrop, MLT denoise, HistogramTransformation, Starnet2, TGVDenoise, Game mask, LocalHistogramEqalization, MMT sharpening, Curves to boost the colors in the galaxies and on the stars