PHYS 182 Study Guide - Midterm Guide: Binary System, Black-Body Radiation
11 Dec 2016
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Luminosity (is the total amount per second the star radiates into space) = total energy/second. You can calculate the distance using the luminosity. Stelar parallax - triangulation - we wanna look at the seas from 2 different locations -only works if there is a set of background stars that are so far that they don(cid:495)t ever seem to move. Parallax and distance: definition of parsec - distance is in parsecs. Stars emit light in all wavelengths but prefer shorter. Using filters we can measure out the amount of light coming out and the temperature. Phase of the matter to estimate the temperature of the star also. Stars are named after the letters of the alphabet. Different absorption lines= different types of atoms present in the star and it can tell us. Most hydrogen gets ionized in space so even if even there is you wont see it on very hot the state as well the m stars.
