What star 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.

Which star Below is the coolest?

One way that stars are categorized is by temperature. Since the temperature of a star can determine its visual color, this category scheme is known as spectral type. The main categories of spectral type are M, K, G, F, A, B, and O. The coolest stars (red dwarfs) being M, and the hottest stars being O.

Which star has a lower temperature 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.

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

Main sequence stars have a Morgan-Keenan luminosity class labelled V. red giant and supergiant stars (luminosity classes I through III) occupy the region above the main sequence. They have low surface temperatures and high luminosities which, according to the Stefan-Boltzmann law, means they also have large radii.

What is the hottest star color?

White stars are hotter than red and yellow. Blue stars are the hottest stars of all. Stars are not really star-shaped.

What is the coldest star color?

Stars have different colors, which are indicators of temperature. The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.

Why is a star brightest at its coolest?

In a star like the sun it takes photons a million or more years to escape from their star. As fusion reaches it’s end the star expands and cools , this allows many more photons escape . Space is awash with these photons and the star is very bright because of it.

What star has the highest luminosity?

List of stars more luminous than any closer star

Which star has the greatest size?

The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun. And it’s not alone in dwarfing Earth’s dominant star.

What star has a temperature of 6000K?

The hottest stars emit much of their energy in the ultraviolet and appear to be electric blue, like an arc-welder’s torch. The star Sirius is a good example of a blue star.
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Colors and Temperatures.

What factor affects the color of Star?

The color of a star is basically decided by the surface temperature of the star. Any electromagnetic radiation is generated when an atom comes from excited state to lower energy state. The excitation of atom depends on the temperature; the atom will be excited to higher energy state when the temperature is higher.

What 2 factors affect the luminosity of a star?

As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off. Temperature also affects a star’s luminosity.

What color is a dying star?

The dead star, called a white dwarf, can be seen at the center of the image as a white dot.
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Is star hotter than Sun?

The sun’s surface temperature is about 5,800° Kelvin (about 10,000° Fahrenheit), and Betelgeuse is roughly half that, about 3,000° Kelvin (about 5,000° Fahrenheit). That is why it is red — red stars are cooler than the sun, blue-white stars are hotter. Betelgeuse is, however, much bigger and brighter.

What is the hottest color?

While blue represents cooler colors to most, it is the opposite in fires, meaning they are the hottest flames. When all flame colors combine, the color is white-blue which is the hottest. Most fires are the result of a chemical reaction between a fuel and oxygen called combustion.