Results 81 to 90 of about 6,740 (303)
Eight New Substellar Hyades Candidates from the UKIRT Hemisphere Survey
The Astronomical JournalWe have used the UKIRT Hemisphere Survey combined with the UKIDSS Galactic Cluster Survey, the UKIDSS Galactic Plane Survey, and the CatWISE2020 catalog to search for new substellar members of the nearest open cluster to the Sun, the Hyades.
Adam C. Schneider +18 more
doaj +1 more source
NLSS3 Impairs SHM1 Autophagic Degradation to Regulate Leaf Morphology and Salt Tolerance in Rice
Advanced Science, EarlyView.In rice, NLSS3 binds and shields SHM1 from autophagic degradation to maintain serine homeostasis. The A132P mutation in nlss3 disrupts this, triggering SHM1 loss, metabolic dysfunction, K+ imbalance, and impaired ROS scavenging, which collectively drive narrow leaves and salt sensitivity.
Xiong Liu +15 more
wiley +1 more source
Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs. II. Properties of 11 T dwarfs [PDF]
The Astrophysical Journal, 2017 Abstract Brown dwarf spectra are rich in information revealing of the chemical and physical processes operating in their atmospheres. We apply a recently developed atmospheric retrieval tool to an ensemble of late-T dwarf (600–800 K) near-infrared (1–2.5 μm) spectra.
Michael R. Line +9 more
openaire +2 more sources
JADES: An Abundance of Ultradistant T and Y Dwarfs in Deep Extragalactic Data
The Astrophysical JournalUltracool T ( T _eff ≈ 500–1200 K) and Y dwarfs ( T _eff ⪅ 500 K) have historically been found only a few hundred parsecs from the Sun. The sensitivity and wavelength coverage of the NIRCam instrument on board the James Webb Space Telescope offer a ...
Kevin N. Hainline +16 more
doaj +1 more source
The Astronomical Journal, 2022 We present an estimate of the occurrence rate of hot Jupiters (7 R _⊕ ≤ R _p ≤ 2 R _J , 0.8 ≤ P _b ≤ 10 days) around early-type M dwarfs based on stars observed by the Transiting Exoplanet Survey Satellite (TESS) during its primary mission.
Tianjun Gan +28 more
doaj +1 more source
Identifying nearby field T dwarfs in the UKIDSS Galactic Clusters Survey [PDF]
, 2009 We present the discovery of two new late-T dwarfs identified in the UKIRT Infrared Deep Sky Survey (UKIDSS) Galactic Clusters Survey (GCS) Data Release 2 (DR2).
Lodieu, N. +3 more
core +1 more source
Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks
Advanced Science, EarlyView.Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley +1 more source
SDSS J080531.84+481233.0: An Unresolved L Dwarf/T Dwarf Binary [PDF]
The Astronomical Journal, 2007 SDSS J080531.84+481233.0 is a peculiar L-type dwarf that exhibits unusually blue near-infrared and mid-infrared colors and divergent optical (L4) and near-infrared (L9.5) spectral classifications. These peculiar spectral traits have been variously attributed to condensate cloud effects or subsolar metallicity.
openaire +2 more sources
The 2Mass Wide-Field T Dwarf Search. I. Discovery of a Bright T Dwarf within 10 Parsecs of the Sun [PDF]
The Astronomical Journal, 2003 accepted for publication to AJ February 2003; 10 pages including 4 figures, uses emulateapj5 ...
Burgasser, Adam J. +5 more
openaire +2 more sources
Three Brown Dwarfs Masquerading as High-redshift Galaxies in JWST Observations
The Astrophysical JournalWe report the spectroscopic identification of three brown dwarf candidates—o005_s41280, o006_s00089, and o006_s35616—discovered in RUBIES using James Webb Space Telescope (JWST) Near-Infrared Spectrograph PRISM/CLEAR spectroscopy.
Zhijun Tu +3 more
doaj +1 more source