Which star type is likely to form in a galaxy's spiral arms?

In a galaxy's spiral arms, the formation of stars is heavily influenced by the density of material and the conditions within these regions. The spiral arms are areas where there is a higher concentration of gas and dust, which creates the perfect environment for star formation. This process typically results in the creation of hot young stars, which are characterized by their high temperatures and luminosities.

Hot young stars form from the gravitational collapse of dense regions within these spiral arms. As the material comes together, it heats up and eventually forms new stars. Several of these young stars are massive, leading to bright blue hues, and they often display strong stellar winds and rapid stellar evolution. They also ionize nearby hydrogen gas, creating beautiful nebulae that can be observed in these regions.

In contrast, red giants, cool dwarf stars, and old stars are generally found in different stages of stellar evolution or in different regions of a galaxy. Red giants are evolved stars that have already gone through significant changes in their life cycles and are typically found in regions away from active star-forming areas. Cool dwarf stars, while common, represent a later stage in stellar evolution and do not form in the young, active regions like the spiral arms. Old stars are remnants of previous star formation that