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The nearly edge-on view of the spiral galaxy shown gives us some clues as to why the level of recent star formation is different between bulges and disks. Consider the type of environment in which new stars form, and use your observations of the picture to choose the statement that best describes why there is more star formation in the disk.
A. There is more cold, dense gas in the disk than in the bulge.
B. It is too bright in the bulge for new stars to form.
C. Stars can only form in flattened disks.
D. There is more hot gas in the disk than in the bulge.
A. There is more cold, dense gas in the disk than in the bulge.

Sagot :

Varshamittal029idn

The best statement is option A.There is more cold, dense gas in the disk than in the bulge.

Star-forming regions are concentrated in galaxies with high concentrations of the material that stars are made of: gas and dust. These concentrations of gas and dust can be "pushed" to the point where they collapse to form stars, depending on the type of galaxy and the types of gravitational interactions it may encounter. Gravity pushes gas and dust to form stars more efficiently in spiral arms than in other parts of the spiral galaxy. This is why spiral arms have more star-forming regions and collections of young stars (open clusters) than other parts of a spiral galaxy.

Thus, due to heavy gravity, gas are more cold and dense in the disk.

To learn more about spiral arms refer here

https://brainly.com/question/12532606

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