S0 galaxies have spiral arms, but little to no gas and dust. This is believed to happen because ____.
A) their gas has been cannibalized by other galaxies
B) they have had bursts of star formation during major collision the gas and dust formed new stars
C) starburst events have used up all of the gas and dust in the disk
D) gas and dust have been stripped from the galaxies as they pass through hot, intergalactic gas
E) tidal interactions have forced the gas into the central bulge

Question

Quizplus · Accepted Answer

S0 galaxies are thought to lose their gas and dust primarily due to ram pressure stripping as they move through hot intergalactic gas, which removes these materials from the galaxy.

S0 Galaxies Have Spiral Arms, but Little to No Gas