Its biggest weakness might be the assumption that the chemical composition of dwarf stars
is the same in elliptical galaxies as in the Milky Way.
Objects in space that have just a little more mass than brown dwarfs are called red dwarf stars
. Red dwarfs may not be much larger than brown dwarfs, but that small increase in size makes a big difference.
"So the prevailing scenario, at least at Ohio State right now, is that the way to make a Type Ia (pronounced 1-A) supernova is by having two white dwarf stars
interacting -- colliding even.
White dwarf stars
are the remaining cores of red giants after they die and shed their outer layers.
They are orbiting a red dwarf star
named K2-239, which is located some 160 light years away from us in the constellation of the Sextant.
Since red dwarf stars
live much longer than Sun-like stars, this discovery raises the interesting possibility that life on such a planet would be much older and more evolved than life on Earth.
One of the 15 newly discovered planets was found orbiting one of the brightest red dwarf stars
, called K2-155, located about 200 light years away from Earth.
London, September 28 ( ANI ): The supernova explosion of the year 1006 - the brightest stellar event ever recorded in history - was probably caused by the merger of two white dwarf stars
, scientists have found.
The cause of SNR 0509-67.5 can be explained best by two tightly orbiting white dwarf stars
spiraling closer and closer until they collided and exploded.
such as GJ 436, which is less than half the sun's mass, are the most common stars.
Since supernovae occur when the exploding white dwarf stars
reach a specific mass, the ensuing brightness is the same and can, therefore, be used as a standard.