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What would be the absolute magnitude and color of a main sequence star with a temperature of 25000K?
The absolute magnitude of a main sequence star with a temperature of 25,000K would depend on its luminosity, which is not provided in the question. However, at this temperature range, the star would appear blue-white in color, as it falls within the blue-white region of the stellar temperature-color relationship.
What happens to the temperature of main sequence stars as the brightness increases?
Stars in their Main Sequence stage have generally proportional temperature and color. The color-temperature spectrum of a star ranges from red (2000-3000 Kelvins) to blue (25,000+ Kelvins). Red Giants have a relatively high luminosity and low temperatures. White dwarfs have relatively low luminosity and high temperatures. Main Sequence stars are proportional temperature/color therefore they can vary from relatively high luminosity and temperature to relatively low luminosity and temperature.Absolute Magnitude is the star's genuine brightness. It's apparent magnitude is it's brightness from earth. A star can only be accurately classified once data on it's absolute magnitude is acquired.
What does Hertzsprung-Russell diagram graph?
The Hertzsprung-Russell diagram graphs stars' luminosity (brightness) against their surface temperature (color or spectral type). This diagram helps astronomers study the relationships between a star's temperature, size, age, and evolutionary stage.
If a main sequence star has an apparent magnitude of 5 what is it's spectral type?
It may be just about anything. The apparent magnitude tells us how bright the star looks to us, not how bright it really is. The apparent magnitude (or brightness) depends both on the absolute magnitude (real brightness), but also depends on the star's distance.
Are main sequence stars all alike in their luminosity and temperature?
No. Main sequence stars vary greatly in both temperature and luminosity. The least massive stars, red dwarfs, can have temperatures as low as 2,300 Kelvin and luminosity as low as 0.015% that of the sun. The most massive stars, which are blue in color can have temperatures as high as 50,000 Kelvin and may be hundreds of thousands times more luminous than the sun.
What would be the absolute magnitude and color of a main sequence star with a temperature of 25000K?
The absolute magnitude of a main sequence star with a temperature of 25,000K would depend on its luminosity, which is not provided in the question. However, at this temperature range, the star would appear blue-white in color, as it falls within the blue-white region of the stellar temperature-color relationship.
What color is the beta cancri and magnitude?
The apparent magnitude is +3.5 and the absolute magnitude is -1.25.
What variables are on the H-R diagram?
The Hertzsprung-Russell diagram is a scatter graph of known stars. It shows the absolute magnitudes (actual brightness at a set distance) versus the spectral type or classification (which is effectively what their temperature is). Stars, when plotted onto this graph, tend to fall into set patterns. The position of a star within a pattern (or sequence) can give further information, such as how old the star is.
What happens to the temperature of main sequence stars as the brightness increases?
Stars in their Main Sequence stage have generally proportional temperature and color. The color-temperature spectrum of a star ranges from red (2000-3000 Kelvins) to blue (25,000+ Kelvins). Red Giants have a relatively high luminosity and low temperatures. White dwarfs have relatively low luminosity and high temperatures. Main Sequence stars are proportional temperature/color therefore they can vary from relatively high luminosity and temperature to relatively low luminosity and temperature.Absolute Magnitude is the star's genuine brightness. It's apparent magnitude is it's brightness from earth. A star can only be accurately classified once data on it's absolute magnitude is acquired.
What does Hertzsprung-Russell diagram graph?
The Hertzsprung-Russell diagram graphs stars' luminosity (brightness) against their surface temperature (color or spectral type). This diagram helps astronomers study the relationships between a star's temperature, size, age, and evolutionary stage.
If a main sequence star has an apparent magnitude of 5 what is it's spectral type?
It may be just about anything. The apparent magnitude tells us how bright the star looks to us, not how bright it really is. The apparent magnitude (or brightness) depends both on the absolute magnitude (real brightness), but also depends on the star's distance.
What is the significance of the main-sequence in the HR diagram?
The significance is the following: 1) When lots of stars are plotted in the HR diagram, the vast majority star appear along a curve. This curve is known as the main sequence. 2) It turns out that those are basically the stars that burn hydrogen-1, converting it into helium-4.
Are main sequence stars all alike in their luminosity and temperature?
No. Main sequence stars vary greatly in both temperature and luminosity. The least massive stars, red dwarfs, can have temperatures as low as 2,300 Kelvin and luminosity as low as 0.015% that of the sun. The most massive stars, which are blue in color can have temperatures as high as 50,000 Kelvin and may be hundreds of thousands times more luminous than the sun.
Are main sequence stars called medium sized stars?
No. Main sequence stars are simply stars that are fusing hydrogen into helium and have a specific relationship between color and luminosity. They range from red dwarfs to large O-type main sequence stars.
What do you understand by main sequence stars?
In the HR-diagram, a diagram of color vs. luminosity, most stars are concentrated close to one curve, called the "main sequence". It turns out that stars on the main sequence are the stars that mainly get their energy by converting hydrogen into helium.
What star has the surface temperature of approximatly 9000 k and luminosity 1 to 20 times greater then the suns luminosity?
Ah, what a delightful question. The star you are describing sounds like it could be a beautiful B-type star. These stars are much hotter and brighter than our Sun, shining brilliantly in the night sky. Just imagine the stunning colors and energy they bring to the universe.
The distances to nearby stars can be measured by using . a. absolute magnitude c. color b. temperature d. parallax?
preallax
