Unformatted text preview: defined a special unit of distance, the parsec, to use in distance calculations. A parsec is defined as the distance to an imaginary star with parallax of one second of arc. One parsec turns out to equal 206,265 AU or 3.26 ly. This makes it easy to calculate the distance to a star given the parallax. D = 1/p 2) Select one type of Interstellar medium. Describe what it is, its temperature, and what part of the spectrum can it be observed. 3) Describe the different types of binary stars....
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This note was uploaded on 01/17/2010 for the course PHY 110 taught by Professor Smith during the Spring '09 term at Upper Iowa.
- Spring '09