Where are stars located in spiral galaxies?
The bulk of the stars in a spiral galaxy are located either close to a single plane (the galactic plane) in more or less conventional circular orbits around the center of the galaxy (the Galactic Center), or in a spheroidal galactic bulge around the galactic core.
Where in a galaxy would you find newly formed stars?
The team has been looking specifically for these regions — dense clouds of gas and dust that form new stars — because such places are known to pop up in the arms of spiral galaxies. It’s thought that gases within the arms bump up against each and other and become so compressed that they give birth to new stars.
What are newly formed stars found in a spiral galaxy?
Astronomy Chapter 2 Section 3
|where are newly formed stars found in a spiral galaxy||spiral arms|
|which galaxies contain mostly old stars||elliptical|
|the Milky Way is probably this type of galaxy||spiral|
|many of these galaxies may have their shape dostorted by neighboring galaxies||irregular|
What are the characteristics of a spiral galaxy?
Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars. The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way.
Where do new stars form in a galaxy?
Where do new stars form in galaxies? An optical image of the spiral galaxy NGC 300 with molecular clouds shown in blue. An analysis of star formation in these clouds show that the first stars that form quickly disperse the cloud, stifling further star formation.
Is the Milky Way galaxy a spiral or spiral galaxy?
The bulge has a large concentration of stars. The arms and bulge are surrounded by a faint halo of stars. The bulge and halo consist mainly of older stars, where spiral arms have more gas, dust and younger stars. Our Milky Way Galaxy is a spiral galaxy.
What makes up the Bulge in the center of a spiral galaxy?
The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way.
What kind of stars are in an elliptical galaxy?
As their name suggests, elliptical galaxies are round or oval, with stars distributed fairly uniformly throughout. They have a bulge and halo, like spiral galaxies, but don’t have the flat disk of stars. The stars in ellipticals tend to be older.