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Horizons: Exploring the Universe (...

14th Edition
Michael A. Seeds + 1 other
Publisher: Cengage Learning
ISBN: 9781305960961
BuyFind

Horizons: Exploring the Universe (...

14th Edition
Michael A. Seeds + 1 other
Publisher: Cengage Learning
ISBN: 9781305960961

Solutions

Chapter
Section
Chapter 8, Problem 1RQ
Textbook Problem

Why are Earth-based parallax measurements limited to the nearest stars?

Expert Solution
To determine

Why Earth-based parallax measurements are limited to the nearest star?

Answer to Problem 1RQ

Earth-based parallax system is limited to nearest stars because earth atmosphere smears stars images which makes difficult to measure the parallax from earth.

Explanation of Solution

Measurement of parallax is a very difficult task because stars at a larger distance makea very small angle.

When we measure the parallax angle from Earth even from a very good observatory, the earth atmosphere smears the images of the star and makes the diameter of the star around 1 arc second, which makes it difficult to measure the parallax from Earth.

That is why Earth parallax system is limited to the nearest star.

Conclusion:

Because earth atmosphere smears stars images which makes difficult to measure the parallax from earth

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Chapter 8 Solutions

Horizons: Exploring the Universe (MindTap Course List)
Ch. 8 - What observations would you make to classify a...Ch. 8 - Why does the orbital period of a binary star...Ch. 8 - What observations would you make to study an...Ch. 8 - Why don’t astronomers know the inclination of a...Ch. 8 - How do the masses of stars along the main sequence...Ch. 8 - Why is it difficult to find out how common the...Ch. 8 - What is the most common type of star?Ch. 8 - If you look only at the brightest stars in the...Ch. 8 - How Do We Know? What is the missing link in the...Ch. 8 - How Do We know? In what way does accumulation of...Ch. 8 - If someone asked you to compile a list of the...Ch. 8 - Can you think of classification systems used to...Ch. 8 - Your marketing agency has been hired to rebrand...Ch. 8 - If a star has a parallax of 0.050 arc second, what...Ch. 8 - If a star has a parallax of 0.016 arc second and...Ch. 8 - Complete the following table of apparent visual...Ch. 8 - terrnine the temperatures of the following stars...Ch. 8 - To which spectral classes do the stars in Problem...Ch. 8 - If a main-sequence star has a luminosity of 400...Ch. 8 - If a star has an apparent magnitude equal to its...Ch. 8 - An 08 V star has an apparent magnitude of +1. Use...Ch. 8 - At the position of Earth, the total flux of...Ch. 8 - In the following table, which star is brightest in...Ch. 8 - What is the total mass of a visual binary system...Ch. 8 - If an eclipsing binary has a period of 32 days,...Ch. 8 - What is the luminosity of a 4-solar-mass...Ch. 8 - Look at Figure 8-8. Why is the lava nearest the...Ch. 8 - If all the stars in the photo in Figure UN 8-3 are...

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