PCS 181 Lecture Notes - Lecture 3: Galaxy Formation And Evolution, Galaxy Zoo, Unit
6 Oct 2015
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Document Summary
Invisible material called dark matter: permeates the galaxies. Dark energy: totally empty space, the vacuum, contains energy, this energy is variously called dark energy, quintessence, the vacuum energy, the. Cosmological constant: dark energy drives the recently-observed acceleration of the universe, dark energy does not equal to dark matter. Inflation pre-big bang there was an infinite energy field. Galaxy formation 1: pink regions = 2. 728 + 0. 0003 k, blue regions = - , galaxy theorists hypothesize that galaxies condensed at the interface between warmer and cooler volumes of space. You can assist the sloan galaxy survey: galaxy zoo: hubble. Irregulars: contain largest amounts of dust/gas are the blue-est galaxies known and support the most active star birth. Luminosity = l = total energy emitted each second. L = 4 (pie = 3. 14) r^2 (sigma = 5. 67 x 10^-8) t(temperature)^4 (unit = j/s: r is radius of object in meters (m), t is temp in kelvins (k), pie and sigma are constant.
