University:
University of Colorado Boulder
Course:
ASTR 1200 | Stars and Galaxies
Academic year:

2024
Views:

235

Pages:

2
Author:

Yamilet Mcmillan

Background: The Hertzsprung-Russell diagram illustrates the relationship between a star's average surface temperature and its absolute magnitude (brightness). Luminosity is a measure of how much energy a star emits in a given period of time. HR Diagram: The diagram shows a plot with luminosity on the y-axis and temperature on the x-axis. Different types of stars are labeled and represented by points on the diagram. Questions: What factor affects the color of a star? Temp What factor affects the luminosity of a star? Diameter (size) & Temp What is the approximate surface temperature of the sun? 6000K Is the surface temperature of white dwarf stars higher or lower than red supergiants? higher Questions and Answers: What is the color of the stars with the highest surface temperature? Blue What is the color of the stars with the lowest surface temperature? Red List the color of the stars from hottest to coldest: Blue, white, yellow, red Most of the stars on the HR Diagram are classified as which type of star? Main sequence What type of star has a high temperature but a low luminosity? White dwarf What type of star has a high temperature and a high luminosity? Blue giants What type of star has a low temperature but a high luminosity? Red supergiant What type of star has a low temperature and a low luminosity? Some main sequence (bottom P) Plot the stars A-E. Once plotted determine their color and type. Letter Temperature Luminosity Color Type of Star A 6,000 K 10^2 yellow M.S. B 20,000 K 10^6 blue Blue Giant C 20,000 K 10^2 white White Dwarf D 2,500 K 10^6 red Red Supergiant E 4,000 K 10^2 red Red Giant

HR Diagram Worksheet Key

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