Three teams have identified a dozen or so brown dwarfs between three and eight Jupiter masses—and no smaller. Byadam Mann, science.org, 6 Nov. 2024 As expected with these diminutive masses, brown dwarfs are rarely found in binaries. Robert Lea, Space.com, 24 Dec. 2024 But the other sys...
Wikipedia Related to brown dwarf:white dwarf brown dwarf n. A celestial body that is more massive than a gas giant planet but has insufficient mass to sustain the hydrogen fusion reactions that produce radiant energy in normal stars. American Heritage® Dictionary of the English Language, Fifth...
stars : low-mass, brown dwarfsWe have used both the Low-Resolution Imaging Spectrograph and the HIRES echelle spectrograph on the Keck telescopes to obtain spectra of twelve candidate members of the Hyades cluster identified by Leggett and Hawkins (1988, 1989). All of the objects are ...
Brown dwarfs are an exotic kind of celestial object. Thought to have approximate masses between 13 and 80 Jupiters, they can be defined neither as massive planets nor tiny stars; they're entirely different substellar curiosities that possess qualities of both. They're the bridge between the most...
Brown dwarfs are sometimes called "failed stars" as they do not have enough mass for nuclear fusion to begin once their gravity causes them to collapse. 褐矮星有时被称为“失败之星”,因为他们没有大到足够的规模可以开始核聚变,只是简单缓慢的发热。 LASER-wikipedia2 The first brown dwarf to ...
0.08 solar mass, as it seems to at higher masses, our results imply that, unless some undetermined process causes the production of many more low-mass clumps, the IMF is falling at masses below 0.08 solar mass, even if all our candidate objects turn out to be true proto-brown dwarfs. We...
This paper discusses evidence for and properties of disks associated to brown dwarfs in the star-forming region rho-Oph. We selected nine objects fr om the... A Natta,L Testi,F Comeron,... - 《Astronomy & Astrophysics》 被引量: 171发表: 2002年 Interaction of the X-ray source radiation...
The UCLA-NASA team has found cloudy, stormy atmospheres on brown dwarfs, the celestial bodies that are less massive than stars but have more mass than giant planets like Jupiter. The discovery will give scientists better tools for interpreting atmospheres and weather on brown dwarfs or on planets...
Brown Dwarfs (BDs) are substellar objects in the mass range between 13 and 80 Jupiter masses approximately. They are unable to sustain hydrogen fusion in their cores, and they represent the link between the lowest mass stars (M-dwarfs) and (exo-)planets. BDs together with very low-mass M...
Brown dwarfs are in the M, L, and T range of the MK system. Their upper limit is before the lowest massred dwarfs. Characteristics of these types are: Spectral Class M – These stars have a temperature of less than 3500 K. These are stars are almost inred dwarfterritory and many scien...