Prologue. Designer: Eric Kimsey The following powerpoint presentation was designed to fulfill the requirements of the TAPS program at Jefferson Labs in Newport News, VA summer 2006.
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A Tool of Astronomers
The Mars Exploration Rovers were launched with the goal of searching for and analyzing rock and soils on Mars. They utilized several spectrometers to analyze samples.
Mini-TES: miniature thermal emission spectrometer (examine rock, soil & atmosphere)
MB: Mossbauer Spectrometer (examine mineralogy of rocks & soils)
APXS: Alpha Particle X-ray Spectrometer (analyze elements in rocks & soils)
Mission: to gather information on Titan (Saturn’s moon).
VIMS: Visual and Infrared Mapping Spectrometer (gather data about surface, rings & atmosphere of Titan and Saturn).
CIRS: Composite Infrared Spectrometer (searches for heat and by that gather information on the object’s composition.
Ex: sunlight passing through a prism
Continuous Spectrum composition of an object, its temperature, its density and its motion. continued
Shift toward this end
Shift toward this end
Each element has a unique signature of absorption lines. That pattern helps scientists identify the element(s).
Ex: stars, planets w/ atmospheres, & galaxies
Cool, thin gas
Again, the pattern of the lines determines the identity of the element.
Ex: comets, nebula
& certain stars
Cold, empty space
Compare the dark lines in the middle spectra to
the dark lines in the other two spectra.
Blue shift shows object is
moving toward the observer.
This shows the normal position or no motion.
This shows a red shift meaning that the object is moving away from the observer.
Determining the Spectra
of Certain Elements
Test your understanding... composition of an object, its temperature, its density and its motion.
Back to question #1
To next question….
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