Results 121 to 130 of about 12,083,844 (366)
Searching for Exosatellites Orbiting L and T Dwarfs: Connecting Planet Formation to Moon Formation and Finding New Temperate Worlds [PDF]
, 2019 L-type and T-type dwarfs span the boundaries between main-sequence stars, brown dwarfs, and planetary-mass objects. For these reasons, L and T dwarfs are the perfect laboratories for exploring the relationship between planet formation and moon formation,
Burgasser, Adam +9 more
core +2 more sources
, 2008 We report proper motion measurements for 427 late-type M, L and T dwarfs, 332 of which have been measured for the first time. Combining these new proper motions with previously published measurements yields a sample of 841 M7-T8 dwarfs.
Ackerman +141 more
core +1 more source
Nonlinear Optical Microscopy of Semiconductor–Metal Nanocavities
Advanced Photonics Research, EarlyView.Three‐dimensional nonlinear optical microscopy is used to visualize GaAs–gold hybrid nanocavities. By carefully selecting the pump wavelength to position the harmonic generation at the nanopillar resonance, an enhanced contrast is observed in the nonlinear imaging.
Riya Varghese +15 more
wiley +1 more source
NICMOS Kernel-phase Interferometry. II. Demographics of Nearby Brown Dwarfs
The Astronomical Journal, 2023 Star formation theories have struggled to reproduce binary brown dwarf population demographics (e.g., frequency, separation, and mass ratio). Kernel-phase interferometry is sensitive to companions at separations inaccessible to classical imaging ...
Samuel M. Factor, Adam L. Kraus
doaj +1 more source
On the Formation of Brown Dwarfs [PDF]
The Astronomical Journal, 2004 AbstractThe observational properties of brown dwarfs pose challenges to the theory of star formation. Because their masses are much smaller than the typical Jeans mass of interstellar clouds, brown dwarfs are most likely formed through secondary fragmentation processes, rather than through the direct collapse of a molecular cloud core.
Douglas N. C. Lin +2 more
openaire +5 more sources
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
Substellar Companions to Main Sequence Stars: No Brown Dwarf Desert at Wide Separations
, 2001 We use three field L and T dwarfs which were discovered to be wide companions to known stars by the Two Micron All-Sky Survey (2MASS) to derive a preliminary brown dwarf companion frequency.
Adam Burgasser +10 more
core +2 more sources
The outbursts of dwarf novae [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 10 pages, 12 figures.
Truss, MR +3 more
openaire +4 more sources
A Novel OsMPK6‐OsMADS47‐PPKL1/3 Module Controls Grain Shape and Yield in Rice
Advanced Science, EarlyView.OsMADS47 is identified as a key regulator governing rice grain morphology. Phosphorylation‐dependent regulation of its activity directs the development of slender versus round grains, modulating both yield and appearance. This mechanism bridges cellular signaling with transcriptional regulation, establishing a molecular framework for grain optimization.
Jingjing Fang +9 more
wiley +1 more source
Discovery of the Remarkably Red L/T Transition Object VHS J183135.58-551355.9
The Astronomical JournalWe present the discovery of VHS J183135.58−551355.9 (hereafter VHS J1831−5513), an L/T transition dwarf identified as a result of its unusually red near-infrared colors ( J − K _S = 3.633 ± 0.277 mag; J − W 2 = 6.249 ± 0.245 mag) from the VISTA ...
Thomas P. Bickle +15 more
doaj +1 more source