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physical object > natural object > celestial body > nebula > H II region > H II condensation |
H II condensation | ||||
subject | fact |
H II condensation | has definition A high-density H II region. | |
is a kind of H II region | ||
H II region | has composition ionized hydrogen | |
nebula | is a part of gas | |
has catalog nebula catalog | ||
celestial body | has spectra | |
physical object | has location or center of gravity | |
has angular momentum | ||
has mass | ||
has velocity | ||
has momentum | ||
has temperature | ||
has volume | ||
has extent | ||
has material |