Chapter 24: Problem 8

Which types of galaxies are most likely to have new stars forming? Describe the observational evidence that supports your answer.

Short Answer

Expert verified

Spiral and Irregular galaxies are the type of galaxies most likely to have new stars forming. Evidence supporting this statement includes the observation of clusters of new stars, seen as areas of heightened brightness in these types of galaxies, and the presence of large clouds of molecular hydrogen gas (H2), the raw material for star formation.

Step by step solution

Understanding Galaxy Types

Firstly, it's important to understand different types of galaxies that are: Elliptical, Spiral, and Irregular galaxies. Spiral and Irregular galaxies are more likely to have new stars forming. This is because they have a sizable amount of dust and gas – essential materials for star formation.

Observations supporting the star formations in Spiral and Irregular galaxies

Astronomers observe star formations by using telescopes equipped with special cameraes to capture long exposure images of galaxies. These images reveal clusters of new stars as bright, emanating light and heat. Observations of the Spiral and Irregular galaxies show these clusters, confirming star formation.

Other forms of observational evidence

Another form of observational evidence is the presence of a lot of molecular hydrogen gas (H2), which is the raw material for star formation. By measuring the spectral lines of this gas in different galaxies, scientists can tell if new stars are likely forming. In Spiral and Irregular galaxies, large clouds of molecular hydrogen gas have been observed, further supporting the theory of star formation in these galaxies.

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Which types of galaxies are most likely to have new stars forming? Describe the observational evidence that supports your answer.

Short Answer

Step by step solution

Understanding Galaxy Types

Observations supporting the star formations in Spiral and Irregular galaxies

Other forms of observational evidence

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Translational Dynamics

Electromagnetism

Mechanics and Materials

Electrostatics

Kinematics Physics

Geometrical and Physical Optics

Study anywhere. Anytime. Across all devices.