What types of stars on the HR diagram tend to be cooler in temperature and of high luminosity *?

What are the coolest stars on the HR diagram?

By far the most prominent feature is the main sequence (grey), which runs from the upper left (hot, luminous stars) to the bottom right (cool, faint stars) of the diagram. The giant branch and supergiant stars lie above the main sequence, and white dwarfs are found below it.

Which type of star has the coolest surface temperatures?

Spectral types are a measure of the surface temperatures of stars and are letter designations: O, B, A, F, G, K, and M. Type O stars have the highest surface temperatures and can be as hot as 30,000 Kelvins. On the other extreme, type M stars have the lowest surface temperatures and can be as cool as 3,000 K.

What type of star has a low temperature and low luminosity?

What type of star has a low temperature and a low luminosity? red dwarf 11.

What star is cooler and dimmer than the sun?

Although the star VY Canis Majoris in the constellation Canis Major has a much cooler surface temperature than our sun, this star's sheer size makes it a super-luminous star. Its radius is thought to be around 1400 times than of our sun, and its luminosity 270,000 greater than our sun.

What are the 4 types of stars in the HR diagram?

By comparing the radii of different stars you will then find out the reason behind the names of the four categories of stars: white dwarfs, main-sequence stars, giants and supergiants.

Which of the following stars are the coolest?

Red stars Red stars are the coolest. Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all.

What type of star is the coolest?

Red stars Red stars are the coolest. Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all.

Which of the following stars has the lowest surface temperature?

Which star has the lowest surface temperature? Antares, with a spectral type of M1 (the furthest from O in OBAFGKM), has the lowest surface temperature.