Tomasz Nowakowski is a member of the physics.org community.
The detection of a new brown dwarf is reported by Astronomers. The object seems to be experiencing a mass loss. A paper detailing the discovery was published on September 2.
The mass range for brown dwarfs is between 13 and 80 Jupiter-masses. To burn regular hydrogen, they need a minimum mass of at least 80 Jupiter mass and a core temperature of 3 million K.
The SSTc2d J163134.1-24006, initially identified as a faint stellar object, has been investigated by a team of scientists. They found that SSTc2d J163134.1-24006 is a brown dwarf with an elliptical shell of carbon monoxide.
The 'Ophiuchus Disk Survey Employing ALMA' is part of the 'ODISEA' program. The researchers wrote in the paper that ALMA Band 6 observations were done on April 27 and August 22 of last year.
The team discovered a shell of carbon monoxide that was ejected from an object with a temperature below 3000 K. This shell is associated with SSTc2d J 163134.1.
The mass loss of a giant star in the distant is one of the scenarios that the team considered in order to explain the nature of SSTc2d J163134.1. The brown dwarf hypothesis is believed to be the most plausible.
The source is most likely to be a young brown dwarf, at a distance of just 139 pc, according to the astronomer.
The first brown dwarf known to exhibit a quasi-spherical mass loss is due to the emission of carbon monoxide from SSTc2d. More detailed theoretical work is required in order to verify the authors' assumption that a deuterium flash is responsible for this phenomenon.
More information: Dary A. Ruíz-Rodríguez et al, Discovery of a brown dwarf with quasi-spherical mass-loss. arXiv:2209.00759v1 [astro-ph.SR], arxiv.org/abs/2209.00759There is a science network.
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