Wolf–Rayet star
Properties
Wolf–Rayet stars are a normal stage in the evolution of very massive stars, in which strong, broad emission lines of helium and nitrogen ("WN" sequence), carbon ("WC" sequence), and oxygen ("WO" sequence) are visible.

Wolf–Rayet star

Section Title: Properties
Table Section Text: Wolf–Rayet stars are a normal stage in the evolution of very massive stars, in which strong, broad emission lines of helium and nitrogen ("WN" sequence), carbon ("WC" sequence), and oxygen ("WO" sequence) are visible.

Spectral type	Temperature (K)	Radius (R☉)	Mass (M☉)	Luminosity (L☉)	Absolute magnitude	Example

WN2	141,000	0.89	16	280,000	2.6	WR 2

WN3	85,000	2.3	19	220,000	3.2	WR 46

WN4	70,000	2.3	15	200,000	3.8	WR 1

WN5	60,000	3.7	15	160,000	4.4	WR 149

WN5h	50,000	20	200	5,000,000	8.0	R136a1

WN6	56,000	5.7	18	160,000	5.1	CD Crucis

WN6h	45,000	25	74	3,300,000	7.5	NGC 3603-A1

WN7	50,000	6.0	21	350,000	5.7	WR 120

WN7h	45,000	23	52	2,000,000	7.2	WR 22

WN8h	40,000	22	39	1,300,000	7.2	WR 124

WN9h	35,000	23	33	940,000	7.1	WR 102ea

Sentence(s)

The R136a1 is a Wolf–Rayet star of the WN5h type.

final_sentence: The R136a1 is a Wolf–Rayet star of the WN5h type.