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The Hertzsprung-Russell diagram (H-R diagram) shows the relationship between absolute magnitude, luminosity, classification, and effective temperature of stars. The diagram as originally conceived displayed the spectral type (effectively the surface temperature) of stars on the horizontal axis and the absolute magnitude (their intrinsic brightness) on the vertical axis.
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∙ 15y ago
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What are the two ways you can classify stars?
The two ways are by their surface temperature (spectrum) and by their absolute magnitude (intrinsic brightness). The HR diagram has spectrum along the horizontal axis and absolute magnitude along the vertical axis. Each star occupies a point in the HR diagram.
What part of the HR diagram are Red supergiant stars in?
Up at the top right. If you look on the Australian Telescope National facility website, their HR diagram shows this clearly.
What type of star has a high temperature and a high luminosity in the hr diagram?
White dwarfs.
What is the purpose of the H-R diagram?
That is short for Hertzsprung-Russell diagram. It is a diagram in which the brightness of stars is plotted against their surface temperature (which can be deduced from their color). It turns out that most stars (basically, the ones that get their energy from fusion of hydrogen to helium) are on, or close to, one particular curve in the diagram - the so-called "main sequence".
What is used observationally to determine the age of a star cluster?
You cannot determine the age of a star based on it's luminosity or spectral class.However, you can make *assumptions*.OB and A stars are massive and will have a short lifespan in the millions of years.FG and K stars have a longer life period - in the billions of years.KMWLY and T stars are stars those that cause problems.Most stars in this class are red dwarfs, stars that are so low in mass that they have a low rate of nuclear fusion and last for tens of billions of years.In general - and I mean in general - a redder shift, should indicate an older star but you cannot use the HR- Diagram to determine this.
What does an h-r diagram relate a stars temperature to?
The temperature is displayed along the horizontal axis while the vertical axis is the star's absolute magnitude. So the HR diagram is a scatter diagram relating temperature and brightness, and eah star occupies one point.
The hr diagram graphs what 2 things?
The temperature and luminosity of stars.
Does An HR diagram plots a stars luminosity and surface temperature?
Yes.
What does the HR diagram do?
It shows certain key characteristics (brightness, and temperature) of stars.
Where are stars on the hr diagram?
The HR diagram contains only stars - so everywhere.
What graph shows the relationship of a stars absolute magnitude and its temperature?
Its called an HR diagram or a Hertzsprung-Russell diagram.
Why is there no neurton stars in the hr diagram?
Of course they are on the HR diagram. They are simply not on the main sequence.
What types of stars are found on an HR diagram?
All stars.
What does an H-R diagram relate a star's temperature to?
The temperature is displayed along the horizontal axis while the vertical axis is the star's absolute magnitude. So the HR diagram is a scatter diagram relating temperature and brightness, and eah star occupies one point.
Where are 90 percent of stars on hr diagram?
main-sequence stars
Why is the hr diagram important to scientist?
The main reason that the HR Diagram is so useful and important to scientists is, you can tell the size of the star by plotting it on the HR Diagram. The different sizes of stars form a pattern on the HR diagram.
Are most of the stars on the HR diagram are classified as which type of star?
stars there called stars
