PHYS 037 Lecture Notes - Lecture 8: Galactic Center, Microsoft Onenote, Interstellar Medium
18 Oct 2016
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The leftover gas falls onto a disk, contracting under its gravity while spinning. Formation of the stars of the halo population. More dense in center disk, causing new stars to form. Small systems of new stars & some globular clusters formed. The gas in this cloud collapses onto a spinning disk b/c of gravity and conservation. New stars continue to form on the disk of angular momentum. The result when a small galaxy goes through a large galaxy. Only disturbs the orbit of stars and redistributes them through the new galaxy. Early 20th century & back: we didn"t know of other galaxies. Because of the separation between the sun and an observed galaxy, the light from galaxies always looks fuzzy and diffuse. The paleness of the light from distant galaxies is known as surface brightness. There is a gap in the sky of galaxies running along the zero latitude line.
