What type of stars are found in the bulge of our galaxy?

What type of stars are found in the bulge of our galaxy?

The disk contains all the gas and young stars, although old stars are also found there. The bulge is dominated by old stars and a violent core. The halo contains very old stars and globular clusters. The reason for this separation of stellar types is a clue to how the Galaxy formed.

What kind of star is most likely to be found in the halo?

Old stars with few heavy elements are referred to as population II stars and are found in the halo and in globular clusters. Population I stars contain more heavy elements than globular cluster and halo stars, are typically younger and found in the disk, and are especially concentrated in the spiral arms.

What types of stars are most common in the galactic bulge?

Classical bulges These bulges are composed primarily of stars that are older, Population II stars, and hence have a reddish hue (see stellar evolution). These stars are also in orbits that are essentially random compared to the plane of the galaxy, giving the bulge a distinct spherical form.

Where is the galactic bulge?

In the center of the galaxy is the bar-shaped galactic bulge which harbors a supermassive black hole with a mass equal to that of about 3 million suns. Surrounding the central bulge is a relatively thin disk of stars about two thousand light years thick and roughly 100,000 light years across.

What is a halo astronomy?

galactic halo, in astronomy, nearly spherical volume of thinly scattered stars, globular clusters of stars, and tenuous gas observed surrounding spiral galaxies, including the Milky Way—the galaxy in which the Earth is located.

How many stars are in the galactic bulge?

There are around 10 million stars within one parsec of the Galactic Center, dominated by red giants, with a significant population of massive supergiants and Wolf-Rayet stars from star formation in the region around 1 million years ago. The core stars are a small part within the much wider galactic bulge.

What do halo stars do differently from disk stars?

What do halo stars do differently from disk stars? They orbit the galactic center with many different inclinations, while disk stars all orbit in nearly the same plane. They all orbit in roughly the same plane and in the same direction.

What population of star is found in the halo?

Population II stars
Population II stars are metal poor stars; they contain about 0.1 percent metals. They are found in the spherical component of the Galaxy (the halo and the bulge).

Which type of galaxies have a disk bulge and Halo?

Spiral galaxies have a central bulge of stars surrounded by a disk that contains arms, which form a spiral structure. Stars in the bulge of a spiral galaxy tend to be older and redder than the rest. There’s also a much fainter, roughly spherical, stellar halo encompassing the disk.

What type of stars are found in the bulge of our galaxy quizlet?

The stars of the bulge and the halo, together known as the spheroidal population of stars, are old low-mass stars with a much smaller proportion of heavy elements than stars in the disk population. Halo stars therefore must have formed early in the galaxy’s history, before the gas settled into a disk.