Elliptical galaxies generally have lower levels of active star formation compared to spiral galaxies. The morphology and structure of a galaxy have a significant influence on its star formation activity.
Spiral galaxies, such as the Milky Way, are characterized by a distinct spiral arm structure, which is associated with ongoing star formation. These galaxies typically contain a significant amount of gas and dust, which serve as the raw materials for new star formation. The spiral arms of these galaxies provide regions of high density and gravitational instability, promoting the formation of stars.
On the other hand, elliptical galaxies have a more spheroidal or ellipsoidal shape and lack the prominent spiral arms found in spiral galaxies. Elliptical galaxies generally have a more diffuse and smooth distribution of stars. They also tend to have less gas and dust available for the formation of new stars. As a result, active star formation in elliptical galaxies is typically lower compared to spiral galaxies.
However, it's important to note that there can be exceptions and variations within these general trends. Some elliptical galaxies may still exhibit some level of ongoing star formation, particularly in their central regions where gas and dust concentrations might be higher. Additionally, interactions and mergers between galaxies can trigger bursts of star formation, regardless of the galaxy's initial morphology.
Overall, while elliptical galaxies generally have lower levels of active star formation compared to spiral galaxies, the specific star formation rates can vary, and there is a range of star formation activity observed across different types of galaxies.