Basic Properties of Stars

Basic Properties of - Basic Properties of Stars Stellar Distances and Motion Naming Stars 1 Names are usually in Greek Latin or Arabic 2 Most

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Basic Properties of Stars: Stellar Distances and Motion Naming Stars 1. Names are usually in Greek, Latin or Arabic 2. Most common stars were given their names between 500 and 1000 A.D. Examples: Sirius Latin “Brilliant One” Altair Arabic “Flying Eagle” < Arabic names often start with “al”> 3. Stars in constellations ate given the name of the constellation followed be a Greek letter, α for the brightest star in a constellation, β for the second brightest etc. Examples: Betelgeuse Alpha of Orion α Ori or α Orion Rigel Beta of Orion β Ori or β Orion Distance 1. The first true scale of stellar distance was devised by James Gregory in 1668 2. Parallax – shift in the direction of a star caused by the change in the position of the Earth as it moves about the Sun. 3. The best way to find the distance to a star is to sight toward the star from different locations, and see how the direction changes with respect to more distant background stars. To Determine the Distance to Stars:
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This note was uploaded on 12/15/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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Basic Properties of - Basic Properties of Stars Stellar Distances and Motion Naming Stars 1 Names are usually in Greek Latin or Arabic 2 Most

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