Linked from

The 52 pages that link to H II region, each with the reason it gives.

• Interstellar mediumBroader topic: Ultraviolet radiation from massive stars transforms nearby gas into an expanding ionized region.

• Stellar feedbackBroader topic: It is a common structure formed as stellar radiation ionizes and expands surrounding gas.

• ReionizationBroader topic: Early H II regions expanded around sources and eventually overlapped across the intergalactic medium.

• Emission nebulaBroader topic: Many emission nebulae are H II regions, with hydrogen ionization driving their visible light.

• NebulaBroader topic: Its glowing ionized gas defines many bright emission nebulae.

• Spiral armBroader topic: Bright H II regions mark sites of recent star formation along many arms.

• Interstellar magnetic fieldBroader topic: Its ionized gas makes magnetic-field diagnostics such as Faraday rotation accessible.

• PhotoevaporationBroader topic: Photoevaporating cloud edges help shape these expanding regions around massive stars.

• Cartwheel GalaxyBroader topic: Bright knots in the Cartwheel’s ring include regions where newly formed stars ionize gas.

• Magellanic BridgeBroader topic: Such regions mark sites where stars have formed within the Bridge.

• Messier 83Broader topic: Bright H II regions mark sites where new stars are forming in Messier 83.

• Galactic planeBroader topic: These luminous star-forming regions mark parts of the galactic plane.

• Pinwheel GalaxyBroader topic: Bright H II regions trace star-forming sites across the galaxy’s spiral arms.

• Interstellar cloudBroader topic: Ultraviolet light from young massive stars ionizes and reshapes nearby cloud gas.

• Astronomical radio sourceBroader topic: Its warm plasma emits thermal radio waves and can reveal obscured star formation.

• Plasma recombinationBroader topic: Hydrogen recombination produces characteristic emission used to study these nebulae.

• Starburst regionBroader topic: These glowing nebulae mark recent massive-star formation within starbursts.

• Stochastic self-propagating star formation modelBroader topic: These regions mark recent massive-star formation and can reveal its spatial progression.