Latest White dwarf Stories

Double Star System Detected Using New South African Radio Telescope
2013-05-16 13:22:20

Astronomers using the Karoo Array Telescope (KAT-7) in South Africa have revealed giant outbursts from X-ray binary star system Circinus X-1. The team watched as the double star system fired off energetic matter from its core into the surrounding system in extensive, compact jets that flared brightly.

Cosmic Test Upholds Einstein's Theory Of General Relativity
2013-04-25 13:56:53

A team of researchers used telescopes around the world to study the most massive neutron star confirmed so far, orbited by a white dwarf. The scientists wrote in the journal Science that so far the new observations match up with Einstein's predictions for general relativity.

White Dwarf Search May Yield Habitable Planets
2013-04-25 05:25:40

A dead star, known as a white dwarf, will eventually cool down and fade away because it has no energy source. However, a new study suggests that white dwarfs can still support habitable planets.

Kepler's Supernova Contains Higher Heavy Metal Content Than Our Sun
2013-04-09 14:22:13

Using observations made from the Suzaku satellite, a joint venture between Japan and NASA, an international team of researchers has found that the star responsible for Johannes Kepler’s famous supernova contained a much higher heavy metal content that our own sun.

Kepler Data Shows Light-bending Gravity In Action
2013-04-05 08:44:27

NASA's Kepler space telescope has observed the effects of a dead star bending the light of its companion star, one of the first detections of this phenomenon in double star systems.

Astronomers Identify New Type Of Supernova 100 Times More Massive Than Our Sun
2013-03-26 13:30:57

Astronomers discovered a new type of supernova of a star about 10 to 100 times more massive than our sun.

Kepler Supernova Remnant Triggers Identified
2013-03-19 04:33:38

NASA's Chandra X-ray Observatory has identified the cause of Kepler's supernova, the famous explosion first discovered by Johannes Kepler in 1604.

Little Room Left For Error In Foundations Of Carbon-Based Life
2013-03-14 12:57:03

Life as we know it is based upon the elements of carbon and oxygen. Now a team of physicists is looking at the conditions necessary to the formation of those two elements in the universe.

Rare Supernova Discovered In Distant Galaxy
2013-03-07 17:47:11

Researchers with the Harvard-Smithsonian Center for Astrophysics (CfA) have announced the discovery of an exceedingly rare type of supernova in an unexpected place.

Latest White dwarf Reference Libraries

White Dwarf
2004-10-19 04:45:43

White Dwarf -- A white dwarf is a a star supported by electron degeneracy. A star like our Sun will become a white dwarf when it has exhausted its nuclear fuel. Near the end of its nuclear burning stage, such a star goes through a red giant phase and then expels most of its outer material (creating a planetary nebula) until only the hot (T > 100,000 K) core remains, which then settles down to become a young white dwarf. A typical white dwarf is half as massive as the Sun, yet only...

2004-10-19 04:45:42

Stellar Evolution -- Stellar evolution is the process of formation, life, and death of stars. It is one of the major topics of cosmogony. Star Birth and Life A star starts out as an enormous cloud of gas and dust many light-years across. Star formation begins when the cloud begins to condense under its own gravity. The processes that initiate this contraction are not fully understood. The cloud fragments fuse into stellar mass clouds known as protostars. Protostars do not emit...

2004-10-19 04:45:42

Nova -- A nova is an enormous nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star. When a white dwarf has a close companion star, the companion will often begin to have its outer atmosphere drawn away from it by the white dwarf's gravity as the companion star ages and expands into a red giant. The gases so captured consist primarily of hydrogen and helium, the two principle constituents of matter in the universe. The gases are compacted on the...

2004-10-19 04:45:41

Cataclysmic Variable Star -- Cataclysmic variables are a class of binary stars containing a white dwarf and a companion star. The companion star is usually a red dwarf, although in some cases it is another white dwarf or a slightly evolved star (subgiant). Several hundreds of cataclysmic variables are known. From the observational viewpoint, cataclysmic variables are relatively easy to discover. They are usually quite blue objects, as the majority of stars are red. The variability of...

2004-10-19 04:45:40

Sirius -- Sirius (α Canis Major, also known as the Dog Star) is the brightest star (-1.46m) in the night sky and can be seen from every inhabited region of the Earth's surface. At a distance of 8.6 light years, Sirius is also one of the nearest stars to Earth. It is a main sequence star of spectral type A0 or A1 and has a mass about 2.4 times that of the Sun. Sirius has a white dwarf companion called Sirius B which orbits it with a period close to 50 years. It was the first white...

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Word of the Day
  • One who brings meat to the table; hence, in some countries, the official title of the grand master or steward of the king's or a nobleman's household.
The word 'dapifer' comes from Latin roots meaning 'feast' and 'bearer'.