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The relationship between a star's temperature and brightness was discovered independently around 1910 by Ejnar Hertzsprung and Henry Norris Russell. The relationship between these to parameters is depicted in a Hertzsprung-Russell diagram or H-R diagram.
The first to classify stars by their brightness was the Greek astronomer Hipparchus in the 2nd century BC. He ranked stars based on their apparent magnitude, with 1 being the brightest and 6 being the faintest.
It is generally believed Hipparchus was the first to classify stars by their brightness
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How does the hertzsprung Russell diagram classify stars?
increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature
How do scientists classify a star by size?
Scientists classify stars by size based on their mass. Stars can be categorized as dwarf stars (like our Sun), giant stars, or supergiant stars, with the size increasing as the mass of the star increases. The classification can also include specific categories such as red dwarfs, white dwarfs, or blue giants, depending on additional characteristics.
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.
What do astronomers plan to fined out by classify stars?
astronomers plan to find the color, size ,temperatures, brightness, and also composition and radiation by stone a student at Robert Mitchell school 6th grade
What compares the brightness of stars as if they were the same distance from earth?
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What are the five characteristics to classify stars?
they are the color, brightness, what its made of
What are characteristics used to classify a star?
you classify stars by color, temperature, size, composition, and brightness.
How does the hertzsprung Russell diagram classify stars?
increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature
What traits do scientist use to classify stars?
Scientists use color, size, brightness, and temperature to classify stars.
What is the main characteristics used to classify stars?
age, brightness , color, bubblyness, yellowness , and heet
What are the three main characteristic used to classify stars?
The three characteristic are temperature, size, and brightness.
How are stars classifieds?
Stars are classified by their color, temperatures, sizes, and brightness, it could also be by composition and radiation.Scientists classify stars by color, luminosity, and temperature.
What characteristics are used to describe stars?
Stars can be described by their temperature, size (diameter), brightness (luminosity), color, composition, and age. These characteristics help scientists classify and study stars in the universe.
What are some characteristics used to classify stars?
Some characteristics used to classify stars include their temperature, color, size (mass), luminosity (brightness), and spectral type. By studying these characteristics, astronomers can classify stars into different categories such as main sequence stars, giants, supergiants, white dwarfs, and more.
What are the four characteristics that scientists use to classify stars?
Scientists classify stars based on their luminosity, temperature, size, and color. These characteristics help determine where a star falls on the Hertzsprung-Russell diagram, which provides insight into its evolutionary stage and lifespan.
What are the two main properties that astonomers use to classify stars?
The surface temperature and the absolute magnitude, which is the brightness of the star when viewed from a standard distance of 10 parsecs.
What are the four variables astromeners use to classify stars?
The four variables astronomers use to classify stars are temperature, luminosity, size or radius, and mass. By analyzing these properties, astronomers can determine a star's position on the Hertzsprung-Russell diagram and classify it into different spectral types and stages of stellar evolution.
