Results 21 to 30 of about 111,632 (351)
The brown dwarf desert as a consequence of orbital migration [PDF]
, 2001 We show that the dearth of brown dwarfs in short-period orbits around Solar-mass stars - the brown dwarf desert - can be understood as a consequence of inward migration within an evolving protoplanetary disc.
Armitage +37 more
core +3 more sources
Atmospheric circulation of exoplanets
地球与行星物理论评, 2023 To date, more than 5000 exoplanets and more than 2000 brown dwarfs have been confirmed, which shows rich diversities in many aspects. With the rapid growth of the planet family, both observational and theoretical research on exoplanet atmosphere is ...
Yuchen Lian, Yongyun Hu
doaj +1 more source
Exploring brown dwarf disks [PDF]
Astronomy & Astrophysics, 2001 4 pages, 4 figures, A&A Letters in ...
NATTA A, TESTI L
openaire +4 more sources
SMA observations of the proto brown dwarf candidate SSTB213 J041757 [PDF]
, 2014 Context. The previously identified source SSTB213 J041757 is a proto brown dwarf candidate in Taurus, which has two possible components A and B. It was found that component B is probably a class 0/I proto brown dwarf associated with an extended envelope.
C. -f. Lee +4 more
core +1 more source
The Astronomical Journal, 2023 Excess infrared flux from white dwarf stars is likely to arise from a dusty debris disk or a cool companion. In this work, we present near-infrared spectroscopic observations with Keck/MOSFIRE, Gemini/GNIRS, and Gemini/Flamingos-2 of seven white dwarfs ...
Dylan Owens +9 more
doaj +1 more source
Устойчивость ячменя озимого к основным болезням в условиях западной лесостепи Украины
Agricultural Science, 2021 The results of three years of research on the influence of meteorological factors on the degree of damage to winter barley varieties by basic diseases are presented.
Галина БИЛОВУС
doaj +1 more source
The Oceanus Moving Group: A New 500 Myr Old Host for the Nearest Brown Dwarf
The Astrophysical Journal, 2023 We report the discovery of the Oceanus moving group, a ≈500 Myr old group with 50 members and candidate members at distances 2–50 pc from the Sun, using an unsupervised clustering analysis of nearby stars with Gaia DR3 data.
Jonathan Gagné +7 more
doaj +1 more source
Possible nuclear fusion of deuteron in the cores of Earth, Jupiter, Saturn, and brown dwarfs
AIP Advances, 2020 Many brown dwarfs have recently been discovered as sub-stellar objects in which deuteron thermonuclear fusion is taking place. Although Jupiter and Saturn emit nearly twice as much heat as they absorb from the Sun, their internal heat-generation ...
Mikio Fukuhara
doaj +1 more source
The Astronomical Journal, 2023 Benchmark brown dwarf companions with well-determined ages and model-independent masses are powerful tools to test substellar evolutionary models and probe the formation of giant planets and brown dwarfs.
Kyle Franson +30 more
doaj +1 more source
Brown dwarfs forming in discs: Where to look for them?
EPJ Web of Conferences, 2011 A large fraction of the observed brown dwarfs may form by gravitational fragmentation of unstable discs. This model reproduces the brown dwarf desert, and provides an explanation for the existence of planetary-mass objects and for the binary properties ...
Stamatellos D., Whitworth A.
doaj +1 more source