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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.
What else can I help you with?
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.
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 is the location on the HR diagram where most stars lie known as?
The location on the Hertzsprung-Russell (HR) diagram where most stars lie is known as the main sequence. The HR diagram is a plot of stellar luminosity against surface temperature. The main sequence is a prominent band that extends diagonally across the HR diagram from high temperature and high luminosity to low temperature and low luminosity. The majority of stars, approximately 90% of all stars, are situated along the main sequence on the HR diagram. These stars are often referred to as main-sequence stars. They exhibit a smooth relationship between surface temperature and luminosity, with varying sizes and masses but sharing this common characteristic of lying on the diagonal band from the upper left to the lower right of the HR diagram. Source: Teach Astronomy - The Hertzsprung-Russell Diagram
What does the HR diagram depict?
The HR diagram, also known as the Hertzsprung-Russell diagram, depicts the relationship between the luminosity and temperature of stars. It shows how stars are distributed in terms of their brightness and temperature, allowing astronomers to classify stars based on these characteristics.
What graph shows the relationship of a stars absolute magnitude and its temperature?
Its called an HR diagram or a Hertzsprung-Russell diagram.
What are the colors of the HR Diagram?
The colors of the HR Diagram are:BlueBlue-WhiteYellowOrangeRed-OrangeRed
What does the hr diagram compare?
The HR diagram compares the luminosity (brightness) of stars against their surface temperature or spectral type. This plot helps astronomers classify stars based on their intrinsic characteristics and evolutionary stages.
How to read an HR diagram and interpret the data it presents?
To read an HR diagram, look at the stars' luminosity on the vertical axis and their temperature on the horizontal axis. The main sequence represents stars in stable fusion. Interpret data by noting a star's position on the diagram to determine its temperature, size, and stage of evolution.
What type of star has a high temperature and low luminosity in the HR diagram?
A blue dwarf star would have high temperature and low luminosity in the Hertzsprung-Russell (HR) diagram. Blue dwarf stars are in the lower left corner of the diagram, characterized by their high surface temperature and faint luminosity compared to other stars of similar temperature.
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.
