Calcium Star Discovered By Astrophysicists

Posted: May 2 2017, 7:30am CDT | by , Updated: May 2 2017, 7:57am CDT, in News | Latest Science News

 
Calcium Star Discovered by Astrophysicists
From the upper left, clockwise: 843-MHz image of RCW 86; image of an arc-like optical nebula in the southwest corner of RCW 86; optical and x-ray images of two point sources, [GV2003] N and [GV2003] S, in the centre of the optical arc Credit: Vasilii Gvaramadze
  • Astrophysicists Discover a Star Full of Calcium

Astrophysicists have detected a star in outer space that has tons of calcium deposits on it.

A group of astrophysicists has discovered a binary solar type star that lies within the supernova remnant RCW 86. By an investigation of the star through spectrocope, it has been found that its atmosphere is chock-a-block with heavy elements. Many of these were let loose during the supernova explosion. The abundance of calcium is especially six times more than the solar equivalent.

Thus this supernova may belong to a category of supernovae that are full of calcium.The origins of these mysterious supernovae are not clear at present. A giant star begins as a supernova explosion. The center of the star contracts into a neutron star. The outer part becomes a gaseous shell called a supernova remnant (SNR). Hundreds of SNRs are to be found in our Milky Way.

Scads of these are in conjunction with a neutron star. In 2002, a neutron star called [GV2003] N which was associated with RCW 86 was detected. This neutron star was a very puerile source of optical emission. Yet by the time 2010 came along, the signals from this region in space were very refulgent indeed.

The complex process through which all this detection work is accomplished by the scientists need not be gone into here. Suffice it to say that the conclusion was that [GV2003] N was not a neutron star. It is in fact a neutron star and a G star in binary combination. When this binary combination of stars occurs, one of them explodes.

The other one is automatically polluted by elements from the explosion. Further study of this star system and why one of its stars has so much calcium on it could lend the astrophysicists many clues regarding its makeup and features.

Supernovae usually occur towards the end of a star’s life. When it has run out of nuclear energy, it tends to explode. This is a sort of autolysis. The observations of the astrophysicists have turned up quite a few puzzles that need to be resolved.

The experts acknowledge that there is still a lot we need to know about star systems. In other words, there are more things in heaven and earth than are to be dreamt of in our philosophy. Continuous study of this star system will yield rich data in the future.

The research results were published in the journal Nature Astronomy.

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