Download 8.8A describe components of the universe, including stars, nebulae

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Transcript
8.8A describe components of the universe, including stars, nebulae, galaxies and use
models such as HR diagrams for classification
8.8C explore how different wavelengths of the electromagnetic spectrum such as light and
radio waves are used to gain information about distances and properties of the universe.
The Electromagnetic Spectrum
and the Universe
X-Ray
Ultraviolet
Visible
Infrared
Radio
Different wavelengths of the electromagnetic
spectrum are used to gain information about the
distances, movements and properties of
components of the universe.
Seeing Stars with X Ray vision!
Infrared Rays and the Universe
Spectral Analysis
We can’t always get a sample of a piece of the
Universe.
So we depend on light !
Spectroscopy in Space
Hydrogen
The sun is in the middle of this
diagram. It is used for comparison
The horizontal axis shows the star’s surface temperature, the axis is reversed
from the way you normally see it, it decreases from left to right