stars and spectral analysis:
DESCRIPTION
Stars and spectral analysis:. WHAT THE COLORS CAN TELL US. Color Temperature. Color Size. Color age. WHAT COLOR IS THAT STAR? READING THE SPECTRUM OF A STAR. WHAT COLOR IS THAT STAR? READING THE SPECTRUM OF A STAR. HOW TO IDENTIFY THE COMPOSITION OF STARS. - PowerPoint PPT PresentationTRANSCRIPT
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Stars and spectral analysis:
WHAT THE COLORS CAN TELL US
![Page 2: Stars and spectral analysis:](https://reader036.vdocument.in/reader036/viewer/2022062305/56815be6550346895dc9dabe/html5/thumbnails/2.jpg)
Color Temperature
![Page 3: Stars and spectral analysis:](https://reader036.vdocument.in/reader036/viewer/2022062305/56815be6550346895dc9dabe/html5/thumbnails/3.jpg)
Color Size
![Page 4: Stars and spectral analysis:](https://reader036.vdocument.in/reader036/viewer/2022062305/56815be6550346895dc9dabe/html5/thumbnails/4.jpg)
Color age
![Page 5: Stars and spectral analysis:](https://reader036.vdocument.in/reader036/viewer/2022062305/56815be6550346895dc9dabe/html5/thumbnails/5.jpg)
WHAT COLOR IS THAT STAR?READING THE SPECTRUM OF A STAR
![Page 6: Stars and spectral analysis:](https://reader036.vdocument.in/reader036/viewer/2022062305/56815be6550346895dc9dabe/html5/thumbnails/6.jpg)
WHAT COLOR IS THAT STAR?READING THE SPECTRUM OF A STAR
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HOW TO IDENTIFY THE COMPOSITION OF STARS• Hydrogen• Helium• Carbon• Iron
When heated, each element emits its own unique and distinct pattern of wavelengths of light. This is known as a SPECTRAL FINGERPRINT.
By using a database of these “fingerprints”, astronomers can identify the composition of a distant object.
For example, the spectral pattern produced by a star is shown below.
It matches the spectral fingerprint of Hydrogen – therefore, we now know that the star is composed of Hydrogen gas!
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RED AND BLUE SHIFTS: How light is used to determine the movement of stars
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How light is used to detect “invisible” alien planets BY OBSERVING STARS:
By measuring the cyclical Doppler shift of a star, astronomers can figure out how far the star is wobbling, which allows them to figure out THE MASS OF ITS ORBITING PLANET, AND ITS DISTANCE FROM THE STAR