Astronomers find coldest star so far, brown dwarf as big as Jupiter (Photo)

By on Mar 24, 2011 in Astronomy, Science Comments

Astronomers have discovered a new strong candidate to be known as the coldest known star, a pair of brown dwarf as shown in the photo below, with one whose temperature is more or less as warm as a fresh cup of tea.



CFBDSIR 1458+10B brown dwarf
Image Credit: Michael Liu/University of Hawaii

The said image was said to have been obtained by using the Laser Guide Star (LGS) Adaptive Optics system on the Keck II Telescope in Hawaii.

According to Space.com on Wednesday, March 23, 2011, the newly discovered star is a pair of the so-called brown dwarf and identified as CFBDSIR 1458+10B.

Brown dwarfs are being referred to as sub-stellar objects which are very low in mass to be able to sustain stable hydrogen fusion, as the two objects found are both as big as the planet Jupiter.

Apparently, the recently-found system is about 75 light years (around 443 trillion miles) away from planet Earth.

As noted in the report, the two components were detected through the Very Large Telescope at the Paranormal Observatory of European Southern Observatory in Chile.

“We were very excited to see that this object had such a low temperature.” Philippe Delorme told the report, the co-author of the paper of the brown dwarf findings which will be published upcoming issue of the Astrophysical Journal.

“But we couldn’t have guessed that it would turn out to be a double system and have an even more interesting, even colder component.” Delorme added, who is from the French National Center for Scientific Research.

The recently discovered pair of brown dwarf was said to have a temperature of approximately 100 degrees Celsius (212 degrees Fahrenheit), which happens to be the boiling point of water.

Back in June 2010, NASA’s Spitzer Space Telescope was reported to have found the coldest brown dwarf but the temperature ranges from 177 to 327 degrees Celsius (350 to 620 degrees Fahrenheit).

But since the temperature made by NASA was not that measured precisely, further observations will identify better to compare them with CFBDSIR 1458+10B.



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