Research report 2011 - Max Planck Institute for Astronomy
Spirals eat dwarfs: galactic tendrils shed light on evolution of spiral galaxies
Abteilung Galaxien und Kosmologie (Hans-Walter Rix)
SummarySpiral galaxies grow by swallowing smaller dwarf galaxies. As they are digested, these dwarf galaxies are severely distorted, forming structures such as surreal tendrils and stellar streams that surround their captors. Now, for the first time, a new survey has detected such tell-tale structures in galaxies more distant than our immediate galactic neighbourhood. This opens up the possibility of testing our current views of galaxy evolution in a new way.