Sentences with phrase «hyperdense white dwarf stars»
The extremely strong gravity of a massive neutron star in orbit with a companion white dwarf star puts competing theories of gravity to a test more stringent than any available before
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White dwarf stars are liquid fire that can not burn themselves out.
It was named in honor of Indian - American physicist Subrahmanyan Chandrasekhar who is known for determining the mass limit for white dwarf stars to become neutron stars.
The atmospheres of some white dwarf stars contain heavy elements, which are thought to result from eating asteroids.
OXYGEN on a planet might be a sign of life, but in two odd white dwarf stars it could indicate a narrow escape from violent death.
Locked in a deadly embrace, two white dwarf stars may be the strongest source of gravitational waves now flooding our galaxy.
As relatively small stars (those less than ten times the mass of our sun) near the end of their lives, they throw off their outer layers and become white dwarf stars, which are very dense.
«White dwarf star exhibits an unusual atmosphere of oxygen.»
The white dwarf star is located about 570 light - years from Earth in the constellation Virgo.
Within the next million years or so, all that will remain of these asteroidal bits is a thin metal dusting on top of an innocent - looking white dwarf star.
In this artist's conception, a Ceres - like asteroid is slowly disintegrating as it orbits a white dwarf star.
Researchers have discovered a white dwarf star with an atmosphere dominated by oxygen, a type of white dwarf that has been theorized to exist but not identified to date.
The unseen movers are fast - moving white dwarf stars that could account for as much as one - third of the galaxy's dark matter.
The diffuse cloud in this image, taken with the Carnegie Institution for Science's Swope telescope in Chile, is the shell of hot hydrogen gas ejected by a white dwarf star on March 11, 1437.
WHAT LIES WITHIN The inner structure of a white dwarf star (shown in this artist's impression) has been mapped for the first time — and it's more oxygen - rich than expected.
Imagine being able to view microscopic aspects of a classical nova, a massive stellar explosion on the surface of a white dwarf star (about as big as Earth), in a laboratory rather than from afar via a telescope.
Led by Christopher Manser of the University of Warwick's Astrophysics Group, the researchers investigated the remnants of planetary systems around white dwarf stars; in this instance, SDSS1228 +1040.
Cruelly, the dense white dwarf star could also be headed for a violent demise unlike anything we've ever seen.
In 2014, scientists found another reason to rejoice in your genes» deterioration: White dwarf stars, like the remnant that will remain at the end of the sun's life, eat rocky planets like Earth for their last meal.
«The cool thing, in this case, is that the lensing effect is so strong, we are able to use that to measure the mass of the closer, white dwarf star.
In their new study, the Leicester - led team assesses whether these laws are the same within the hot, dense conditions in the atmosphere of a dying white dwarf star as here on Earth.
The researchers use the light of white dwarf stars observed with the Hubble Space Telescope.
NEWSPAPER obituaries of Subrahmanyan Chandrasekhar, who died last month aged 84, all highlighted the single achievement for which he will be best remembered — his work on white dwarf stars.
It may be the remains of a carbon - rich white dwarf star.
At first glance this exploding star had all the features of a type Ia supernova, which happens when a small, dense white dwarf star steals material from an orbiting companion and then explodes.
Sandage's preferred method is to use type Ia supernovae, which arise when a white dwarf star gathers material from a companion and explodes.
A planetlike body 4,000 light - years away may be the compacted remains of a white dwarf star that is now mostly diamond.
Two white dwarf stars orbiting each other will collide in 900,000 years, possibly annihilating both.
A type Ia supernova represents the total destruction of a white dwarf star by one of two possible scenarios.
Known as 2014J, this was a Type la supernova caused by the explosion of a white dwarf star, the inner core of star once it has run out of nuclear fuel and ejected its outer layers.
Artist's impression of a rocky and water - rich asteroid being torn apart by the strong gravity of the white dwarf star.
Astronomers have identified a white dwarf star in our galaxy that may be the leftover remains of a recently discovered type of supernova.
Type Iax supernovae may be caused by the partial destruction of a white dwarf star in such an explosion.
These so - called supersoft sources are now thought to be white dwarf stars that cannibalize their stellar companions and then, in many cases, explode
Type Ia supernovae are caused by the complete destruction of a white dwarf star in a thermonuclear explosion.
The first hint of the kamikaze asteroids came about 40 years ago, when astronomers discovered heavy elements such as magnesium in the spectra of some white dwarf stars.
I was rather concerned by speculation that white dwarf stars could harbour habitable planets simply because these stars emit light...
Several newly discovered white dwarf stars seem to have atmospheres consisting almost entirely of carbon.
How such a dense planet formed is unclear, the researchers say, but it's probably the crystalline vestige of a white dwarf star whose atmosphere was stripped away by the parent pulsar.
A whole new class of carbon - dominated white dwarf stars is a «major discovery,» says astronomer Pierre Bergeron of the University of Montreal in Canada.
«It tells us that nature has found a way that we didn't know to make white dwarf stars without the usual hydrogen or helium surface layers,» Dufour says.
Neither study searched for the stars responsible for so - called type Ia supernovae, which are explosions of white dwarf stars that have grown overweight by feasting on material from a companion star.
Observations of the explosions of white dwarf stars in binary systems, so - called Type Ia supernovae, in the 1990s then led scientists to the conclusion that a third component, dark energy, made up 68 % of the cosmos, and is responsible for driving an acceleration in the expansion of the universe.
A third possibility is that a medium - sized black hole shredded a white dwarf star.
Such a shock could not have been produced if the companion were another white dwarf star.
According to a report published today in the journal Nature, some of the emissions come from discrete sources representing hundreds of never - before - seen white dwarf stars, neutron stars and black holes.
Specifically, the most energetic iron emission they studied is characteristic of so - called x-ray binary starsduos comprised of a dense stellar object such as a white dwarf star, a neutron star or a black hole that collects matter from a less dense companion, emitting x-rays in the process.
What remains behind is a nearly naked core of carbon and oxygen, which collapses to form a white dwarf star, roughly the size of Earth but 100,000 times as dense.
At the age of 20, when most college sophomores are still picking their majors, Harvard student Subrahmanyan Chandrasekhar proved that white dwarf stars would explode after reaching a mass 1.4 times that of our sun.
Today, a UCLA - led team of scientists reports that it has discovered the existence of a white dwarf star whose atmosphere is rich in carbon and nitrogen, as well as in oxygen and hydrogen, the components of water.