Star Characteristics.

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Presentation transcript:

Star Characteristics

A body of hot gases that radiate energy What is a Star? A body of hot gases that radiate energy

Hertz sprung-Russell Diagram A graph that shows the relationship between the surface temperature and the absolute magnitude of a star

A measure of how much light a star gives off Absolute Magnitude A measure of how much light a star gives off

A measure of the amount of light received on Earth Apparent Magnitude A measure of the amount of light received on Earth

A measure of how much energy leaves a star in a period of time Luminosity A measure of how much energy leaves a star in a period of time

The MORE luminous a star, the BRIGHTER it is. The luminosity of stars is dependent on: Temperature Size Stars that are the least luminous are: SMALL & COOL Stars that are the most luminous are: LARGE & HOT

Color of the hottest star= BLUE Color of the coolest star= RED Most stars are classified as what type of star? MAIN SEQUENCE Our Sun is classified as what type of star? MAIN SEQUENCE

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