Destruction of Galaxies as a Cause of the Appearance of Stellar Streams
Abstract
The interaction of galaxies in clusters with the intergalactic gaseous medium and other galaxies is considered. The causes for the appearance of gaseous and stellar "tails" and stellar "copies" of galaxies during their movement in a dense gaseous medium in the cores of clusters and during the tidal destruction of colliding galaxies are studied. The possible role of star formation and direct collisions of gas-rich galaxies leading to the emergence of low surface brightness galaxies (LSBGs), as well as the destruction of old and the formation of new galaxies is indicated. The possible contribution of the destruction of galaxies and satellites of massive galaxies by star formation bursts occurring in them to the appearance of stellar streams of galactic scales is noted. Stellar streams eventually enter the thick stellar disks and bulges of massive galaxies. Stellar streams, as a product of the decay of satellite galaxies, may contain the remaining dense star clusters and include stars, exoplanets, and interstellar comets.
- Publication:
-
Astronomy Reports
- Pub Date:
- November 2021
- DOI:
- 10.1134/S106377292111007X
- Bibcode:
- 2021ARep...65.1085T
- Keywords:
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- galaxies;
- stellar streams;
- star clusters;
- planetary systems