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Star project

Charles Cañas

on 3 October 2012

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Transcript of Sirius

Created By: Charles Cañas, Quyen Nguyen, Ivan Romeo Sirius Brightness: 23 suns
Temperature: 9,800 Kelvin
Color: White
Size: Twice the Sun's size
Distance: About 8.6 Light years Information Hydrogen,H(1)
Helium,He(2) Elements Born within clouds of dust, such as a nebula . As the clouds collapses the material in the center begins to heat up. Known as a Protostar. Star Formation It is a main sequence star, about 200-300 million years old. Age of Sirius It is in the MILKY WAY, it is a spiral galaxy. Our solar system is on an arm of the Milk Way. Which galaxy is it in? Scientist use a method called parallax to measure the distance between stars. Because of the Earth's revolution, near stars seem to shift their position against the farther stars. This is called parallax shift. By observing the distance of the shift and knowing the diameter of the Earth's orbit, astronomers are able to calculate the parallax angle across the sky. The smaller the parallax shift, the farther away from earth the star is.
Scientist use light years to measure the distance between stars because is is much easier. For example, 1 light year equals 9,460,000,000,000 kilometers, so which one would you rather write. Distance between Stars/Light Years The Sun Comparison Sirius Brightness: 23 suns
Temperature: 9,800 Kelvin
Color: White
Size: Twice the Sun's size
Distance: About 8.6 Light years
Location- In the Milky Way Brightness: 1 sun
Temperature: 4,800 Kelvin
Size: 864938 miles (1391980 km) in diameter
Distance: 93 million miles
Composition- Mostly Hydrogen & Helium Main sequence star
Location- In the Milky Way Sirius is not able to replace our sun ever. For starters it's in a binary star system, which means that there is more than one star in it's solar system. We would literally roast to death plus it is a really hot star. Conclusion Sirius belongs in the constellation Canis Major (Big Dog).
Sirius is also known as:
Dog Star
Alpha Canis Majoris
HR 2491
HD 48915
Sirius gets its name from the Greek root Seirios
which means scorcher. Additional info
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