The brown dwarf star has a temperature of roughly 8,000 kelvins, meaning it is more than 2,000 K hotter than the Sun.
Brown dwarfs have no nuclear fusion reaction in their core like other stars, and they have auroras and atmospheres with storms like planets. On the other hand, they can host their planets like other stars and emit measurable light.
The team of astronomers behind the new analysis looked at observations of the brown dwarf star WD 0032-317 B and the white dwarf WD 0032-317 made using the Ultraviolet and Visual Echelle Spectrograph of the European Southern Observatory's Very Large Telescope. They had expected to find another white dwarf orbiting WD 0032-317 but discovered that the binary system was made up of a white dwarf and a brown dwarf. Based on their observations, detailed in, they found that the brown dwarf has a mass roughly 75–88 times that of Jupiter.White dwarfs are the last evolutionary stage of low and medium-mass stars, like our Sun.
WD 0032-317 is unusually hot for a brown dwarf, mainly due to the intense ultraviolet radiation it receives from its neighboring white dwarf. The brown dwarf is also tidally locked to the white dwarf, meaning it always shows the same side. This means the side of the brown dwarf facing the white dwarf star is always roughly 6,000 K hotter than the night side.
Due to their strange planet-like nature, brown dwarfs are the coldest known star category in the cosmos. Recently a team of astronomers from the University of Sydney analyzed a small distant brown dwarf star with the catchy name T8 Dwarf WISE J062309.94−045624.6 and found that it is the
日本 最新ニュース, 日本 見出し
Similar News:他のニュース ソースから収集した、これに似たニュース記事を読むこともできます。
Astronomers Spot a Massive Brown Dwarf Hotter Than the SunThe object has a surface temperature 38% hotter than our host star.
続きを読む »
Kody Brown's Children: Who 'Sister Wives' Stars Are DatingKody Brown welcomed 18 children over the years with wives Meri Brown, Christine Brown, Janelle Brown and Robyn Brown — details
続きを読む »
Astronomers have spotted inexplicably bright light coming from the sunExtraordinarily high-energy gamma rays have been found emanating from the sun, and none of our theoretical models can explain why there are so many of them
続きを読む »
Astronomers Discover Inexplicably Bright Light from the SunAstronomers have observed extraordinarily high-energy gamma rays emanating from the sun, surpassing any previous observations. The abundance of these gamma rays exceeds the predictions of our current models of the sun.
続きを読む »
'Sister Wives': Inside Kody Brown's Marriage to Robyn BrownShe may be Kody Brown's fourth wife, but few can deny that SisterWives star Robyn Brown is the Brown family patriarch's favorite.
続きを読む »
Sister Wives’ Kody Brown, Christine Brown’s Family: A Guide‘Sister Wives’ patriarch Kody Brown and ex-wife Christine Brown share six children — see the full guide to their family
続きを読む »