Stars
Betelgeuse
Rigel
Blue/White Star
The Sun
Composition of Stars Spectrum – a rainbow of made of millions colors. Spectrograph – an instrument used to spread starlight out into colors. Emission lines – bright lines made with certain wavelengths of light. Absorption spectrum – a continuous spectrum with dark lines where less light gets through.
Emission Lines
Magnitude (brightness) Apparent magnitude – how bright a light looks or appears.
Magnitude cont’ Absolute magnitude – is the actual brightness of a star.
Orion
HR- Diagram The HR-Diagram is a graph showing the relationship between a star’s surface temperature and absolute magnitude.
HR-Diagram
Binary Systems
Binary System
Supernovas
Neutron Stars
Pulsars pulsar sound
Black holes
Black holes cont’