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physical object > natural object > celestial body > star > early star > B star > P-strong star

P-strong star comparison table

Subject	is a kind of	has definition
B star	early star	Blue-white star of spectral type B whose spectra are characterized by absorption lines of neutral helium which reach their maximum intensity at B2. The Balmer lines of hydrogen are strong, and lines of singly ionized oxygen and other gases are also present.
P-strong star	B star	A small subgroup of B-type stars in which P lines are very strong.

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