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What is known about stars that are placed toward the top of the H-R diagram?
Wiki User
∙ 12y ago
They are very bright or luminous stars.
Wiki User
∙ 12y ago
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Where are 90 percent of stars on hr diagram?
main-sequence stars
What is anH-R diagram?
That's short for Hertzsprung-Russel diagram. It is a diagram in which the total luminosity versus color (and therefore temperature) of many stars is plotted.
Interpret an H-R diagram?
An H-R Diagram (Hertzsprung and Russell) is used to classify stars based on their size and brightness. The main sequence stars, such as our sun, are the medium stars, and take up the middle f the diagram, while the giants and dwarves are located on either side. http://www.eso.org/public/outreach/eduoff/cas/cas2002/cas-projects/bulgaria_comaber_1/hr_local.gif <- shows what an H-R diagram looks like.
What is a constellation that is a shape of a quadrilateral?
The Lepus Constellation, "Lepus" meaning 'Hare'. The formation of the quadrilateral stars is known as 'Arsh-al-Jawza'.
What the colors on the H-R diagram mean?
In earlier Hertzsprung-Russell diagrams, the colours, as defined by the horizontal axis, showed the spectral type of the stars. This was an ordinal scale, not an exact numerical scale. The ordering was according to the surface temperature of the stars. More recently, that has been replaced by the B-V colour scale. This is based on UBV photometry, where the amount of light given out by stars is measured in the ultraviolet (wavelength = 364 nm), blue (442 nm), and visual (540 nm) regions of the spectrum. The value of V is subtracted from B and this is the B-V colour index which is used to colour-code stars. As a star gets cooler and therefore more red, the B-V colour index increases. Hot stars have a small B-V and cool stars have a large B-V.
Why does the H-R diagram constructed from the data on the brightest stars differ so much from the diagram constructed data on the nearest stars?
The H-R diagram constructed from the data on the brightest stars differs from the diagram constructed from data on the nearest stars because the brightest stars are typically more massive and have higher luminosities, while the nearest stars may include a mix of different masses and luminosities. This leads to a different distribution of stars in the diagram, with the brightest stars clustering in different regions compared to the nearest stars.
A graph used to study the stars is?
One graph used to relate stars' absolute magnitudes and their spectral types is the Hertzsprung-Russell diagram, better (and more simply) known as the H-R diagram.
Where are stars on the hr diagram?
The HR diagram contains only stars - so everywhere.
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 is a b-r diagram?
A Hertzsprung-Russell (H-R) diagram, also known as a color-magnitude diagram, is a graph that plots stars based on their absolute magnitude (brightness) and spectral type (color). It is a valuable tool for studying the properties and evolutionary stage of stars within a specific population.
What is the brightest star on the H-R diagram?
The brightest star on the Hertzsprung-Russell diagram is typically found in the upper left corner, representing massive, hot, and luminous stars known as supergiants or giants. These stars have high luminosities and are located in the top portion of the diagram.
What types of stars are found on an HR diagram?
All stars.
Why is it known as a Main sequence?
The term "main sequence" refers to stars that are in the phase of their life cycle where they are fusing hydrogen into helium in their cores. It is called the main sequence because the majority of a star's life is spent in this phase, during which it maintains a stable energy output and size.
Are most of the stars on the HR diagram are classified as which type of star?
stars there called stars
Most of the stars on the HR Diagram are classified as which type of star?
stars there called stars
Where are 90 percent of stars on hr diagram?
main-sequence stars
What diagram classifies stars on a temperature- luminosity graph?
Hertzsprung-Russell (HR) diagram classifies stars based on their luminosity (brightness) and temperature. This diagram allows astronomers to categorize stars into main sequence, giants, supergiants, white dwarfs, and other classes based on their positions in the diagram. It provides insights into the life cycle and evolutionary stage of stars.
