A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Are proton stars and white dwarfs the same?

Best Answers

White dwarfs are end stage of small stars , of the order till 1.44 Times solar mass [ Chandrasekhar Limit] till which the collapse of star against its gravitational collapse once the fusion in core is exhausted, can be balanced by electron degeneracy pressure[ Earlier in an ordinary star, the gravitational collapse was balanced by temperature generated by fusion and in white dwarf it is replaced by electron degeneracy pressure]. read more

Planetary nebulae are large, expanding regions of ionized gas that came from the outer layers of a dying star. At their center is a hot, dense cinder - a white dwarf - that is left over from the core of the star. As mentioned, white dwarfs are not producing heat, so they undergo collapse too. read more

But in general, compact stars of less than 1.39 M ☉ (the Chandrasekhar limit) are white dwarfs, whereas compact stars with a mass between 1.4 M ☉ and 3 M ☉ (the Tolman–Oppenheimer–Volkoff limit) should be neutron stars (though there is an interval of a few tenths of a solar mass where the masses of low-mass neutron stars and high-mass white dwarfs can overlap). read more

Encyclopedia Research

Wikipedia:

Image Answers

ASTRONOMY VISUALS
Source: pa.uky.edu