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Stellar Evolution: High Mass and Low Mass Stars

Stellar Evolution: High Mass and Low Mass Stars. The 3 diagrams show the lifecycles of 3 different stars. Identify the type of object at each stage and explain whats happening.

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Stellar Evolution: High Mass and Low Mass Stars

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  1. Stellar Evolution: High Mass and Low Mass Stars The 3 diagrams show the lifecycles of 3 different stars. Identify the type of object at each stage and explain whats happening. The evolution of a star depends on its mass. Give typical masses for each of the 3 stars that follow different evolutionary routes.

  2. The Spectrum of a Star Star Identify the elements present in the star’s spectrum

  3. Spectral Types Classify these stellar spectra (using the spectral type labels, bottom) by looking at the absorption lines (using the two reference spectra at the top). Arrange the spectra in order of spectral type. O M2 M0 F0 G0 K0 B2 A0

  4. Effective Temperature (K) 10000 7000 6000 4000 30000 105 104 103 102 Luminosity relative to the Sun 10 1 10-1 10-2 10-3 10-4 F0 G0 K0 M0 A0 O5 B0 Spectral Class Stellar Evolution: Post Main Sequence

  5. Stellar Evolution: Post Main Sequence Label the main groups of stars on the Hertzsprung-Russell (H-R) diagram. Does the evolutionary track (black line) represent a solar mass star or a high mass star? Label the main evolutionary stages as the star leaves the Main Sequence. Place the images below at the correct points on the H-R diagram.

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