Learning objective
E.5.1—Stellar equilibrium
• Stars are stable when outward radiation pressure balances inward gravity.
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E.5 Fusion and stars
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Learning objective
E.5.2—Fusion in stars
• Fusion is a source of energy in stars.
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Learning objective
E.5.3—Fusion conditions
• Fusion in stars requires high density and temperature.
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Learning objective
E.5.4—Stellar mass and evolution
• Stellar mass determines star evolution pathway.
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Learning objective
E.5.5—HR diagram regions
• Use HR diagram regions to describe star properties. • Include main sequence, red giants/supergiants, white dwarfs and lines of constant radius.
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Learning objective
E.5.6—Stellar parallax
• Stellar parallax distance: d(pc)=1/p(arcsec).
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Learning objective
E.5.7—Stellar radii
• Determine stellar radius from luminosity and surface temperature.
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