About This Chapter
Star Types and Significance - Chapter Summary and Learning Objectives
Astronomy is a very broad field, and stars are just one kind of entity found in the night sky, although their presence and role in astronomic activity can be significant. In this chapter, you'll access video lessons to learn about the different kinds of stars and the common properties they share throughout their life cycles. Explore why the stars discussed here are important to an understanding of astronomy. Video lessons also include a discussion of stars' motion and mass, as well as the Doppler shift. You'll learn about key concepts related to the Doppler shift, like blueshift, redshift, relative mass, and stellar combinations. By the end of the chapter, you should be able to:
- Identify common features of stars according to their type
- Define 'main sequence star'
- Describe star clusters
- Define 'binary star'
- Understand the concept of the Doppler shift
- Name several types of stellar combinations
|Types of Stars by Size, Color and Life Cycle||Discuss stars according to their physical type and development.|
|What is a Main Sequence Star?||Define this kind of star, and understand its role in space.|
|Types of Star Clusters||Learn about common properties of star clusters and how to identify different kinds based on this knowledge.|
|Binary Stars and Doppler Shifts||Define what binary stars are, and describe how their movement produces Doppler shifts; identify and describe stellar combinations.|
1. Types of Stars by Size, Color and Life Cycle
Learn to identify the different sizes and colors of stars and how they relate to the star life cycle. In this lesson, we'll talk about spectral classification, how many stars there are of each type and the approximate color of the different classes of stars.
2. What is a Main Sequence Star?
This lesson will explain what a main sequence star is and how it evolves. You'll also learn about how the sun ages as a main sequence star and how that will affect life on Earth.
3. Types of Star Clusters
Our lesson will explore what star clusters are, the two types of star clusters, and their characteristics and differences as well as how we can figure out their ages using the H-R diagram.
4. What Are Binary Stars?
This lesson defines binary stars and describes the different kinds, including visual binary, astrometric binary, spectroscopic binary, and eclipsing binary stars. We'll also describe how orbits and mass relate to one another in a binary star system.
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Other chapters within the Astronomy 101: Intro to Astronomy course
- The History of Astronomy
- How Scientists Think and Work
- Matter in Astronomy
- Light in Astronomy
- Newton's Laws in Astronomy
- Momentum, Energy, Pressure, Temperature & Gas
- Rotational Motion in Physics
- Earth's Spheres and Astronomy
- Influences on Climate
- The Orbits of Celestial Bodies
- The Earth, Sky, and Moon
- The Moon: Formation & Phases
- The Atmosphere on Earth and Other Planets
- The Sun's Structure & Components
- The Solar System: Layout, Formation & Dating
- Characteristics of Our Solar System's Planets
- Small Celestial Bodies & Satellites in Our Solar System
- Measurement of Star Qualities
- The Birth and Life of Stars
- Star Death and Stellar Remnants
- The Milky Way Galaxy
- Galaxies: Properties & Characteristics
- The Universe: Key Concepts & Theories
- Life in the Universe
- Celestial Navigation & Timekeeping
- Relativity in Time and Space