Most of the stars - the red dwarves - are very faint. Even the star that is closest to us (next to the Sun), Proxima Centauri, is too faint to see with the naked eye, even though the distance is only a little over 4 light-years.
Enjar Hertzsprung lived in 1873-1967 and Henry Russell lived in 1877-1957. They were scientists who worked separtely. They found the same answer about the temperature and color of stars. The diagram that they made is called the Hertzsprung-Russell diargram. It shows the connection between surface temperature and color.The discoverers of the famous Hertzsprung-Russel diagram (HR diagram), which turned out to be an important tool for the analysis of stars.
A star's color in the Hertzsprung-Russell diagram is determined by its surface temperature. Hotter stars appear blue or white, while cooler stars appear red.
The main sequence stars on the Hertzsprung-Russell diagram that are least massive are the red dwarfs. These stars have low masses compared to other main sequence stars like our sun. They are cooler and fainter, making them difficult to observe compared to more massive stars.
The main sequence - the region across the middle of the diagram.
The main sequence on the Hertzsprung-Russell diagram represents the stage in a star's life when it is undergoing nuclear fusion of hydrogen into helium in its core. Stars spend the majority of their lifetime on the main sequence, where they maintain a stable balance between inward gravitational pressure and outward radiation pressure. The main sequence runs diagonally from high temperature, high luminosity stars (top left) to lower temperature, lower luminosity stars (bottom right).
The diagram was created by Ejnar Hertzsprung and Henry Norris Russell aound 1910.
Cool and luminous stars would be located in the top right corner of a Hertzsprung-Russell diagram, in the region known as the red giant branch.
Enjar Hertzsprung lived in 1873-1967 and Henry Russell lived in 1877-1957. They were scientists who worked separtely. They found the same answer about the temperature and color of stars. The diagram that they made is called the Hertzsprung-Russell diargram. It shows the connection between surface temperature and color.The discoverers of the famous Hertzsprung-Russel diagram (HR diagram), which turned out to be an important tool for the analysis of stars.
Upper right
A star's color in the Hertzsprung-Russell diagram is determined by its surface temperature. Hotter stars appear blue or white, while cooler stars appear red.
The main sequence stars on the Hertzsprung-Russell diagram that are least massive are the red dwarfs. These stars have low masses compared to other main sequence stars like our sun. They are cooler and fainter, making them difficult to observe compared to more massive stars.
Duplicate question
Upper right
That question does not make any sense
You can read a description, and find a typical graph, here:http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."You can read a description, and find a typical graph, here:http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."You can read a description, and find a typical graph, here:http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."You can read a description, and find a typical graph, here:http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram"The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..."
see link below
The Hertzsprung-Russell diagram is a scatter plot of stars showing their luminosity (brightness) versus temperature (color). It helps astronomers classify stars based on their size, age, and evolutionary stage. The diagram is crucial for understanding the life cycle of stars and predicting their future evolution.