Results 71 to 80 of about 1,220,192 (373)
The Astrophysical Journal Letters, 2023 We use recent microlensing observations toward the central bulge of the Galaxy to probe the overall stellar plus brown dwarf initial mass function (IMF) in these regions well within the brown dwarf domain. We find that the IMF is consistent with the same
Gilles Chabrier, Romain Lenoble
doaj +1 more source
Interactions between brown-dwarf binaries and Sun-like stars
, 2012 Several mechanisms have been proposed for the formation of brown dwarfs, but there is as yet no consensus as to which -- if any -- are operative in nature. Any theory of brown dwarf formation must explain the observed statistics of brown dwarfs.
A. Natta +51 more
core +1 more source
A Panchromatic View of Brown Dwarf Aurorae [PDF]
, 2017 Stellar coronal activity has been shown to persist into the low-mass star regime, down to late M-dwarf spectral types. However, there is now an accumulation of evidence suggesting that at the end of the main sequence, there is a transition in the nature ...
J. Pineda, G. Hallinan, M. Kao
semanticscholar +1 more source
, 1998 Recent observations of microlensing events in the Large Magellanic Cloud suggest that a sizable fraction of the galactic halo is in the form of Massive Astrophysical Compact Halo Objects (MACHOs). Although the average MACHO mass is presently poorly known, the value $\sim 0.1 M_{\odot}$ looks as a realistic estimate, thereby implying that brown dwarfs ...
DE PAOLIS, Francesco +3 more
openaire +3 more sources
The “Mysterious” Origin of Brown Dwarfs [PDF]
The Astrophysical Journal, 2004 11 pages, 3 figures, ApJ submitted Error in equation 1 has been corrected.
Aake Nordlund, Paolo Padoan
openaire +3 more sources
A Small Brown Dwarf in an Aligned Orbit Around a Young, Fully Convective M Star
The Astronomical JournalA star's spin–orbit angle can give us insight into a system's formation and dynamical history. In this paper, we use MAROON-X observations of the Rossiter–McLaughlin effect to measure the projected obliquity of the LP 261-75 (also known as TOI-1779 ...
Madison Brady +8 more
doaj +1 more source
POPULATION PROPERTIES OF BROWN DWARF ANALOGS TO EXOPLANETS [PDF]
, 2016 We present a kinematic analysis of 152 low surface gravity M7-L8 dwarfs by adding 18 new parallaxes (including 10 for comparative field objects), 38 new radial velocities, and 19 new proper motions.
J. Faherty +22 more
semanticscholar +1 more source
Advanced Science, EarlyView.This study elucidates a novel SlJAZ8‐SlWRKY57‐SlAVT6A/SlAVT6B module that effectively channels metabolic flux from primary to secondary metabolism, impacting plant growth, development, and resistance. Two novel vacuolar amino acid exporters, SlAVT6A and SlAVT6B, fine‐tunes trichomes, terpenes, and gibberellins, bolstering spider mite resistance.
Yingchen Hao +11 more
wiley +1 more source
The Astrophysical JournalIrradiated brown dwarfs offer a unique opportunity to bridge the gap between stellar and planetary atmospheres. We present high-quality Hubble Space Telescope/Wide Field Camera 3/G141 phase-resolved spectra of the white dwarf–brown dwarf binary GD 1400 ...
Rachael C. Amaro +10 more
doaj +1 more source
Mass Production of 2021 KMTNet Microlensing Planets. III. Analysis of Three Giant Planets
The Astronomical Journal, 2022 We present the analysis of three more planets from the KMTNet 2021 microlensing season. KMT-2021-BLG-0119Lb is a ∼6 M _Jup planet orbiting an early M dwarf or a K dwarf, KMT-2021-BLG-0192Lb is a ∼2 M _Nep planet orbiting an M dwarf, and KMT-2021-BLG ...
In-Gu Shin +50 more
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