Enif is a class K2 orange giant star.
Neither - Eltanin is a K type star
It's a class K0-IIIa .
An O star will stay on the main sequence for millions of years whereas a M star can stay on the main sequence for billions and billions of years.
A star with a spectral class of O is classified as a Blue Star. A red star will have a spectral class of M See related question
There are seven main stellar classifications, which are O, B, A, F, G, K, and M. These classifications are based on the surface temperature of stars, with O being the hottest and M being the coolest. Each classification is further divided into subclasses denoted by a number from 0 to 9.
To say to star in Spanish we say "empezar" or "comenzar" and to spell the noun star is C O M I E N Z O
I read on Wikipedia that O-type stars can be a milllion times brighter than our Sun.
O. This is the class of the blue/white giants.
A K type star has a surface temperature ranging from about 3,500 to 5,000 degrees Celsius. It is cooler than stars with earlier spectral types (such as O, B, and A stars) but hotter than stars with later spectral types (such as M stars).
The five categories of a star classification are O, B, A, F, G, K, and M. These categories are based on the star's surface temperature, color, and spectral features. O stars are the hottest and bluest, while M stars are the coolest and reddest.
an o-type blue star has a less length life than a g-type sun like star, this is because a the larger, hotter star, (the o-type blue star) uses its fuel (converting hydrogen into oxygen) quicker, so the correct answer to your question is the o-type blue star.
O, B, A, F, G, K, and M