Presentation on theme: "SpectraSpectraSpectraSpectra How do we know what elements are in stars???"— Presentation transcript:
SpectraSpectraSpectraSpectra How do we know what elements are in stars???
How to see a spectrum
Emission and Absorption
How they come to be
Visible Solar Spectrum Dark lines are absorption lines from a number of elements!
Emission spectra lines UV
Visible Spectrum of the hot gases in a star-forming region, Omega nebula (M17). The nebula produces a complex spectrum of bright and dark lines – Emission and Absorption
Disclaimer Aloha I put together these power points for use in my science classes. You may use them in your classes. Some images are public domain, some are used under the fair-use provisions of the copyright law, some are mine. Copyright is retained by the owners! Ted Brattstrom