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Which of the following luminosity classes refers to stars on the main sequence?
The basic luminosity classes are: I for supergiants, III for giants, and V for main-sequence stars.
Which star has a higher luminosity and a lower surface temperature than the sun Rigel Bernard's star Alpha Centauri or Aldebaran?
There are trillions of them. You need to be more specific.
Which two groups of stars can have similar brightness?
Blue Supergiants and Supergiants
Who discovered supergiants?
Me
How long do red supergiants live?
Red Supergiants tend to live about half a million years.(:
Which of the following luminosity classes refers to stars on the main sequence?
The basic luminosity classes are: I for supergiants, III for giants, and V for main-sequence stars.
Which stars are giant stars?
Supergiants are the most massive stars, occupy the top region of Hertzsprung-russell diagram . Supergiants can have 10 to 70 solar masses and luminosity up to hundreds of thousands times the solar luminosity and because of their large masses they have lifespan of few million years and may be less than this value .
Which star has a higher luminosity and a lower surface temperature than the sun Rigel Bernard's star Alpha Centauri or Aldebaran?
There are trillions of them. You need to be more specific.
Which two groups of stars can have similar brightness?
Blue Supergiants and Supergiants
Where in our milky way are supergiants located?
Supergiants are found throughout the galaxy.
How do white dwarfs compare with super-giants in terms of temperature and luminosity?
The plural of dwarf is "dwarves". White dwarves are hotter than supergiants. White dwarves also have much less luminosity. This is related to their very small surface area. Since white dwarves no longer produce energy, they will cool down over time - but this takes quite a while.
Who discovered supergiants?
Me
How long do red supergiants live?
Red Supergiants tend to live about half a million years.(:
What is a sentence with luminosity in it?
I was enthralled by the luminosity of the deep water jellyfish.
What is the temperature of a super giant star?
Supergiants can have masses from 10 to 70 times the size of our Sun. They vary greatly in radii, usually from 30 to 500, or even in excess of 1,000 times our Sun. See Link - Supergiants are located in box 5 . Stars in Box 6 are generally referred to as Hypergiants.
Where is Betelgeuse located on the H-R diagram?
Betelgeuse has a spectral type of M2lab signifying that it is a red class M star. the "lab" refers to it being an intermediate luminous supergiant. It has a luminosity of 140,000L. Referring to the H-R diagram [See related link] we can see that an M class star with a luminosity of 140,000 will appear in the very top right corner - above la supergiants.
How is star luminosity measured?
A star's luminosity is measured according to the relevance to the sun. Basically for example, if a star is 8,300 degrees Celsius and has a luminosity of 0.001; the luminosity is compared to the sun.
