Results 91 to 100 of about 94,786 (300)
A Nearby Isolated Dwarf: Star Formation and Structure of ESO 006–001
The Astrophysical Journal, 2023 Observations with the Hubble Space Telescope unexpectedly revealed that the dwarf galaxy ESO 006–001 is a near neighbor to the Local Group at a distance of 2.70 ± 0.11 Mpc.
Lidia N. Makarova +6 more
doaj +1 more source
Lucky Imaging survey for southern M dwarf binaries
, 2010 While M dwarfs are the most abundant stars in the Milky Way, there is still large uncertainty about their basic physical properties (mass, luminosity, radius, etc.) as well as their formation environment. Precise knowledge of multiplicity characteristics
Allen +59 more
core +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
Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions
The Astronomical JournalWe present new spectroscopic data for Gaia DR3 2309499817384726016 (WD 0008-350A) and its two wide, comoving, low-mass companions. We confirm the white dwarf is a hydrogen rich DA, with T _eff = 6200 ± 90 K and a mass of 0.63 ± 0.03 M _⊙ , close to that ...
Peter A. Jałowiczor +18 more
doaj +1 more source
Barnard's Star and the M Dwarf Temperature Scale
The Astronomical Journal, 2004 The recently measured angular diameter of Barnard's star, together with its large and precise parallax, and a spectral energy distribution that extends from the near-ultraviolet to almost 12 μm establish some of the star's fundamental properties—we find a bolometric luminosity L = (3.46 ± 0.17) × 10-3 L⊙, radius R = 0.200 ± 0.008 R⊙, and effective ...
P. C. Dawson, M. M. De Robertis
openaire +1 more source
THE ULTRAVIOLET RADIATION ENVIRONMENT AROUND M DWARF EXOPLANET HOST STARS [PDF]
The Astrophysical Journal, 2013 The spectral and temporal behavior of exoplanet host stars is a critical input to models of the chemistry and evolution of planetary atmospheres. At present, little observational or theoretical basis exists for understanding the ultraviolet spectra of M dwarfs, despite their critical importance to predicting and interpreting the spectra of potentially ...
France, Kevin +10 more
openaire +4 more sources
A dwarf galaxy remnant in Canis Major: the fossil of an in-plane accretion onto the Milky Way
, 2003 We present an analysis of the asymmetries in the population of Galactic M-giant stars present in the 2MASS All Sky catalogue. Several large-scale asymmetries are detected, the most significant of which is a strong elliptical-shaped stellar over-density ...
Abadi +40 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
X-Ray, UV, and Optical Observations of Proxima Centauri’s Stellar Cycle
The Astrophysical JournalProxima Cen (GJ 551; dM5.5e) is one of only about a dozen fully convective stars known to have a stellar cycle, and the only one to have long-term X-ray monitoring.
Bradford J. Wargelin +5 more
doaj +1 more source
The Chemical Evolution of the Monoceros Ring/Galactic Anticenter Stellar Structure
, 2010 The origin of the Galactic Anticenter Stellar Structure (GASS) or "Monoceros ring" --- a low latitude overdensity at the edge of the Galactic disk spanning at least the second and third Galactic quadrants --- remains controversial.
Abadi +35 more
core +1 more source