What is the Hertzsprung-Russell diagram?
Q: What is the Hertzsprung-Russell diagram?
A: The Hertzsprung-Russell diagram is a graph of many stars that shows the relation between stars' luminosity and their temperature.
Q: Are Hertzsprung-Russell diagrams pictures or maps of where the stars are located?
A: No, Hertzsprung-Russell diagrams are not pictures or maps of where the stars are. They plot each star on a graph measuring the star's brightness versus its temperature.
Q: What are Hertzsprung-Russell diagrams also called?
A: Hertzsprung-Russell diagrams are also called H-R diagrams or HRDs.
Q: How many stars were used to create the Hertzsprung-Russell diagram in the text?
A: The diagram in the text is based on measurements from 23,000 stars in our Milky Way galaxy.
Q: Who were the creators of the Hertzsprung-Russell diagram?
A: The Hertzsprung-Russell diagram is named after its creators, astronomers Ejnar Hertzsprung and Henry Norris Russell.
Q: What does the Hertzsprung-Russell diagram measure for each star?
A: The Hertzsprung-Russell diagram measures the star's brightness or luminosity versus its temperature, for each star plotted.
Q: What is the significance of the Hertzsprung-Russell diagram?
A: The Hertzsprung-Russell diagram is significant because it allows astronomers to classify stars based on their temperature and luminosity, and also provides clues about a star's age and evolutionary stage.
