Results 11 to 20 of about 111,392 (348)
Search for brown-dwarf companions of stars [PDF]
, 2010 The discovery of 9 new brown-dwarf candidates orbiting stars in the CORALIE and HARPS radial-velocity surveys is reported. New CORALIE radial velocities yielding accurate orbits of 6 previously-known hosts of potential brown-dwarf companions are ...
J. Sahlmann +9 more
openalex +4 more sources
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
The Galactic disk mass-budget : II. Brown dwarf mass-function and density [PDF]
, 2001 In this paper, we extend the calculations conducted previously in the stellar regime to determine the brown dwarf IMF in the Galactic disk. We perform Monte Carlo calculations taking into account the brown dwarf formation rate, spatial distribution and ...
Chabrier G. +6 more
core +2 more sources
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
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 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
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 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