Basmah Riaz (Max Planck Institute for Extraterrestrial Physics, Germany) and colleagues studied a young brown dwarf
in the 3 million-year-old Sigma Orionis star cluster.
Had this star formed with only a slightly lower mass, the fusion reaction of hydrogen in its core could not be sustained, and the star would instead have transformed into a brown dwarf
In May, a team of astronomers announced that they have discovered a small substellar "failure" called a brown dwarf
that once had been a true star--before it was ravaged by its hungry white dwarf companion.
WISEA 1147 is one of the few free-floating worlds where astronomers can begin to point to its likely origins as a brown dwarf
and not a planet.
Today, the coolest known starlike orb is a brown dwarf
discovered last year.
ISLAMABAD -- Astronomers have discovered the first aurora outside our solar system, around a brown dwarf
about 18 light years away from Earth and up to 10,000 times more powerful than any previously seen.
A brown dwarf
, or "failed star", is an object more massive than a planet yet too small to trigger the thermonuclear reactions that power stars.
But scientists estimate it is probably a brown dwarf
rather than a planet since brown dwarfs
are known to be fairly common.
The newfound coldest brown dwarf
is named WISE J085510.
They peered out into space at a brown dwarf
named ISO-Oph 102.
Solar system planetary scientists, brown dwarf
and exoplanet observers and theoreticians, molecular spectroscopists, and instrument specialists discuss methods and findings in the composition of atmospheres around planets beyond the solar system.
This opens a new window and provides an important clue for the brown dwarf