Z-type star

Class Z stars, or Z-type stars are very massive, hot, bright and rare stars in the universe, for a galaxy the size of the Milky way with billions of stars, only 3 of them are Z-type stars. The closest star of this class is over a million light years away. These stars also emit powerful stellar winds and flares. They are generally confused with Class ΔM Stars, however, unlike them, these stars are much smaller, emit a much vivid pink glow and have much shorter lifetimes.
Z-type stars are very hot, they have surface temperatures ranging from 70,000°C, to over 1,500,000°C in the largest stars. Since they are so hot and bright, they burn their fuel very rapidly. They can also fuse heavier elements than Iron (but not heavier than Astatine) and also elements that stars don't normally fuse, such as Lithium, Beryllium and Chlorine.
These stars are also very massive, around 150-3000 solar masses, 20-550 solar radii, and ranging in brightness from 30 million, to over 8 billion solar luminosities depending on the star's size and spectral type.
These stars have very short lifespans, they live for only 5,000-100,000 years, for comparison, the oldest civilizations are around 5000 years old. They would expand into red megagiants 3 times bigger than Stephenson 2-18 and explode into hypernovas, eventually collapsing into a black hole.
These stars would have a bright neon pink color, as they are so hot they emit shorter wavelenghts of light, in fact, the wavelenghts they emit can be so short sometimes they emit ionizing radiation that can expose any organism to deadly doses of radiation within 2 AUs and very powerful stellar winds that can completely strip away an atmosphere as thick as Venus' atmosphere. Habitable zones in these stars are on the order of thousands of AU, to even several light years depending on their size. This, combined with their very short lifespans, makes life around them virtually impossible.
Properties of typical Z-type stars
Spectral Type	Solar luminosity
(L☉)	Solar radius
(R☉)	Solar masses
(M☉)	Temperature
(K)
Z0V 	8,000,000,000	550	3,000	1,500,000
Z1V 	6,863,000,000	440	2,500	1,300,000
Z2V 	4,650,000,000	390	2,000	1,000,000
Z3V 	2,500,000,000	310	1,700	800,000
Z4V 	1,230,000,000	230	1,350	698,000
Z5V 	500,000,000 	160	1,000	430,000
Z6V 	230,000,000 	100	750 	250,000
Z7V 	100,000,000 	70 	500 	176,500
Z8V 	67,000,000 	45 	340 	100,000
Z9V 	30,000,000 	20 	150 	70,000
Note: Some rare Z-type stars have special properties that may not fit into this list.
Second note: At temperatures this high, the difference between celsius and kelvin is almost negligible.
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