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The differences of star temperatures is very great. For example, three of the stars we know well:
- are Sol (our sun) with a temperature at the photosphere of 5,778° K
- Betelgeuse (a red dwarf) with a temperature of 3,140–3,641° K
- and Bellatrix (a white dwarf) with a temperature of 22,000° K
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoThe temperature and magnitude depend mainly on the mass of the star and on the star's age. In general, a massive star will be brighter, but a star's brightness also varies over the star's lifetime.
Suggested reading, for further information: http://en.wikipedia.org/wiki/Stellar_evolution
Wiki User
∙ 14y agoNo. They all vary in temperature depending on their types.
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Explain why size is the only factor that determines the stars absolute magnitude?
The absolute magnitude is a measure of the star's luminosity hence the smaller the size the less the absolute magnitude.
How will a star bright if it was near the sun?
A star near the Sun might be brighter or dimmer, it depends on how big it is. Each star has an absolute magnitude and if you find out a star's absolute magnitude, and then subtract 31.4, that would be its visual magnitude at the Sun's distance from us.
The true brightness of a star is called its BLANK magnitude?
The scale of star brightness is the 'magnitude'. The definition of the magnitude is: A change of six magnitudes equals a factor of 100. So one magnitude change is a factor equal to the 6th root of 100 = about 2.15443 (rounded)
How much brighter does a first magnitude star appear than a 6 magnitude star?
Each difference of 1m corresponds to a factor of about 2.512 (to be precise, 100.4, or the fifth root of 100 - the scale is chosen in such a way that a difference of 5m corresponds to a factor of 100). Therefore, since in this example there is a difference of 3m, you calculate 2.512 to the power 3.
What is the magnitude of the star alioth?
what is the magnitude of the star Alioth in the constellation Ursa Major
Which star is brighter -2 or -3?
The way stellar magnitude works, a smaller number is associated with increased brightness. Since -3 < -2, a magnitude -3 star would be brighter than a magnitude -2 star. Each decrease in magnitude by 1 means in increase in brightness by a factor of about 2.5119. Equivalently, each decrease in magnitude by 5 means an increase in brightness by a factor of 100. Incidentally, the brightest star in the sky (Sirius) has an apparent magnitude of only about -1.5.
Compared to a magnitude 1 star a star with a magnitude of 2 is?
A magnitude 1 star is about 2.512 times brighter than a magnitude 2 star. The exact factor is the fifth root of 100 - this means that a difference of 5 magnitudes is equivalent to a brightness factor of 100.
What factor is not used to determine a star's apparent magnitude?
how dense the star is
Is the size of the star the only factor that determines that star's absolute magnitude?
yes yes it does
How does apparent magnitude of a star differ from absolute magnitude?
Apparent magnitude is the brightness as observed from earth, while absolute magnitude is the brightness of a star at a set distance. The apparent magnitude considers the stars actual brightness as well as it's distance from us, but absolute magnitude takes the distance factor out so that star brightnesses can be directly compared.
Is the size of a star the only factor that determines the stars absolute magnitude?
yes yes it does
Explain why size is the only factor that determines the stars absolute magnitude?
The absolute magnitude is a measure of the star's luminosity hence the smaller the size the less the absolute magnitude.
How will a star bright if it was near the sun?
A star near the Sun might be brighter or dimmer, it depends on how big it is. Each star has an absolute magnitude and if you find out a star's absolute magnitude, and then subtract 31.4, that would be its visual magnitude at the Sun's distance from us.
If star A is third magnitude and star B is fifth magnitude which is brighter and by what factor?
A 3rd magnitude star is brighter than a 5th magnitude star by a factor of 6.25.Each integer difference of magnitude represents a change in apparent brightness of 2.5 times. Hence, a 3rd magnitude star is 2.5 x 2.5 = 6.25 times brighter than a 5th magnitude star.(check related links)
What is a star brightness called?
the brightness of a star is called it's magnitude
Star A is a first magnitude star. Star B is a sixth magnitude star. Which star is brighter and by how much?
A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.
What is star's magnitude?
The magnitude is the brightness of the star.
