Neutron stars are extremely dense remnants of massive stars that have undergone supernova explosions, and they typically possess strong magnetic fields and rapid rotation. The Hertzsprung-Russell (HR) diagram primarily charts stars based on their luminosity and temperature, focusing on the main sequence, giants, and white dwarfs. Neutron stars are not in thermal equilibrium like those stars, as they emit energy primarily through processes like thermal radiation and magnetic field interactions rather than nuclear fusion, which is why they do not appear on the HR diagram. Instead, they are often represented separately in discussions of stellar evolution and compact objects.
The Hertzsprung--Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.Because the luminosity is low or non existent in the case of black holes, they do not appear on the HR diagram.
The Hertzsprung--Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.Because the luminosity is low or non existent in the case of black holes, they do not appear on the HR diagram.
Neutron stars are not typically found on the H-R diagram because they are remnants of massive stars that have undergone supernova explosions. However, their progenitor stars could be located on the diagram based on their luminosity and temperature.
The temperature and luminosity of stars.
The location on the Hertzsprung-Russell (HR) diagram where most stars lie is known as the main sequence. The HR diagram is a plot of stellar luminosity against surface temperature. The main sequence is a prominent band that extends diagonally across the HR diagram from high temperature and high luminosity to low temperature and low luminosity. The majority of stars, approximately 90% of all stars, are situated along the main sequence on the HR diagram. These stars are often referred to as main-sequence stars. They exhibit a smooth relationship between surface temperature and luminosity, with varying sizes and masses but sharing this common characteristic of lying on the diagonal band from the upper left to the lower right of the HR diagram. Source: Teach Astronomy - The Hertzsprung-Russell Diagram
The HR diagram contains only stars - so everywhere.
Of course they are on the HR diagram. They are simply not on the main sequence.
The Hertzsprung--Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.Because the luminosity is low or non existent in the case of black holes, they do not appear on the HR diagram.
All stars.
main-sequence stars
stars there called stars
stars there called stars
The red dwarves.
The colors of the HR Diagram are:BlueBlue-WhiteYellowOrangeRed-OrangeRed
The Hertzsprung--Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral types or classifications and effective temperatures.Because the luminosity is low or non existent in the case of black holes, they do not appear on the HR diagram.
The main reason that the HR Diagram is so useful and important to scientists is, you can tell the size of the star by plotting it on the HR Diagram. The different sizes of stars form a pattern on the HR diagram.
They are very hot stars.