Can galaxies die

Answer 1

We have not been around long enough to find out, but the only viable proposal to emerge so far is the Minkowski/Jackson/Whiffen model of recycling and evolution. This invokes active galactic nucleus (AGN) accretion (SMBH) and re-ionization of matter, which is re-emitted in quasar 'gas flows' or relativistic jets (Look up M87 or Centaurus A). Which then form new open spiral galaxies due to the intrinsic rotation of bodies in space to a virial radius.

This is evidenced by the massive population peak of quasars at z= ~1.7, a few Billion years ago, coinciding closely with the age of the sun and older stars in the Milky Way, (and of course the lack of galaxies full of dead stars) and apparent correlation with the re-ionization of all below hydrogen. Such models are very unlikely to become part of mainstream science as irrefutable evidence is difficult to find and then change views with.

no a galaxy cannot die rather it gets deteriorated bcoz of the expansion of the universe