answersLogoWhite

0


Best Answer

If an interstellar cloud is massive enough that the gas pressure is insufficient to support it, the cloud will undergo gravitational collapse. The mass above which a cloud will undergo such collapse is called the Jeans mass. The Jeans mass depends on the temperature and density of the cloud, but is typically thousands to tens of thousands of solar masses. In so-called triggered star formation, one of several events might occur to compress a molecular cloud and initiate its gravitational collapse. Molecular clouds may collide with each other, or a nearby supernova explosion can be a trigger, sending shocked matter into the cloud at very high speeds. Finally, galactic collisions can trigger massive starbursts of star formation as the gas clouds in each galaxy are compressed and agitated by tidal forces.

User Avatar

Wiki User

15y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What event may trigger new star formation in a spiral arm?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How is star formation related to spiral arms?

As interstellar clouds approach the spiral arm region it helps them to begin the collapsing process and eventually form a star.


What are spiral density waves responsible for?

They initiate new star formation. Therefore they are responsible for the formation of new stars.


What galaxies are smaller with many bright young stars and lots of gas and dust for star formation?

Spiral Galaxies


Can a shock wave disrupt an interstellar cloud from creating a star?

On the contrary, shock waves from supernovae can actually trigger star formation.


What are similarities between elliptical and spiral galaxies?

While spiral galaxies are bright, elliptical galaxies are dim. Spiral galaxies are hotbeds of star formation, but elliptical galaxies aren't nearly as prolific because they contain less gas and dust, which means fewer new (and brighter) stars are born


Where would you find the brightest part of a galaxy?

Most of the times, the brightest part of the galaxy is at the ceentre due the higher density of stars .Also if the galaxy is a spiral then the brightest part of the galaxy are the spiral arms because they are the star formation areas in the galaxy


What does not affect the formation of Magma?

Star Wars Movies do not affect the formation of magma.


What were spiral galaxies deformed by?

A galaxy is a collection of stars. A spiral galaxy is in principle, a large flat disc with a bulging center, which is called the nucleus. In the nucleus, the largest quantity of stars are situated to the edge of the spiral-shape, and in the rest the amount of stars decreases. Within the disc the stars are situated on pinwheel-like structures, the spiral arms, that wind out in a spiral-shape from the nucleus to the edge. They are regions of dust, gas, and stars where star formation is occuring. Also in between the spiral arms reside stars, the stars in these areas give the galaxy its characteristic shape, because they are younger and much brighter.Sometimes a galaxy is deformed by the influence of gravity from within the galaxy or from an other galaxy in the neighborhood.Sometimes, galaxies crash into each other or due to gravity rip each other apart.Some spiral galaxies, when deformed, have a "bar" running through the galaxy nucleus. Usually the spiral arms "connect" to the end of this bar. The bars are active regions where star formation is occuring.


In which type of galaxy would you be most likely to observe a massive star supernovae in a giant elliptical galaxy or in a large spiral galaxy?

Large Spiral Galaxy. This is because they contain more of the OB stars that are required for a supernova event. Elliptical galaxies tend to be older and have more low mass stars and are not as common as spiral galaxies. See Link for more information


Where do most star formations take place?

In the spiral arms


Have scientists seen a star form or witnessed the formation of a star?

Not exactly: Star formation is believed to be a slow process, compared to a human lifetime; scientists have, however, seen stars in different phases of their formation.


What are the main methods and concepts in the study of star formation?

A Star