On the Hertzsprung-Russell (H-R) diagram, the coolest stars are located on the right side, particularly in the red dwarf region of the main sequence. These stars have lower temperatures, typically below 3,500 Kelvin. Additionally, some cooler stars can be found in the upper right quadrant as red giants and supergiants, though they are larger and more luminous than the typical cool main sequence stars.
They are very hot stars.
stars there called stars
Of course they are on the HR diagram. They are simply not on the main sequence.
The red dwarves.
The colors of the HR Diagram are:BlueBlue-WhiteYellowOrangeRed-OrangeRed
On the HR diagram, the coolest stars are located on the right side, specifically in the red dwarf region of the main sequence. These stars have low temperatures, typically ranging from about 2,500 to 3,500 Kelvin. Additionally, some cooler stars can be found in the red giant area, which is located above the main sequence on the right side.
They are very hot stars.
The majority of stars in a Hertzsprung-Russell (HR) diagram are located along the main sequence, which runs diagonally from the upper left (hot, luminous stars) to the lower right (cool, dim stars). This area contains about 90% of all stars, including our Sun. Stars on the main sequence are in a stable phase of hydrogen fusion in their cores. Other regions of the HR diagram, such as the giant and white dwarf areas, contain significantly fewer stars.
Nebulae themselves are not directly plotted on the Hertzsprung-Russell (HR) diagram, which is a graphical representation of stars based on their luminosity and temperature. However, nebulae are often the regions where stars form, and the stars that emerge from these nebulae can be represented on the HR diagram. The HR diagram primarily focuses on the evolutionary stages of individual stars rather than the nebulae from which they originate.
The HR diagram contains only stars - so everywhere.
All stars.
Alpha Pavonis, also known as Peacock, is a blue-white star located in the HR diagram's area corresponding to hot and luminous stars, specifically in the upper left region where blue supergiants are located.
stars there called stars
stars there called stars
main-sequence stars
Of course they are on the HR diagram. They are simply not on the main sequence.
HR 8938 Cephei is a binary star system located in the constellation of Cepheus. It consists of two massive blue stars that orbit each other. The system is one of the brightest X-ray sources in the sky.