Results 91 to 100 of about 112,298 (365)
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
Shocking and Mass Loss of Compact Donor Stars in Type Ia Supernovae
The Astrophysical JournalType Ia supernovae arise from thermonuclear explosions of white dwarfs accreting from a binary companion. Following the explosion, the surviving donor star leaves at roughly its orbital velocity.
Tin Long Sunny Wong +2 more
doaj +1 more source
When do stars in 47 Tucanae lose their mass? [PDF]
, 2015 By examining the diffusion of young white dwarfs through the core of the globular cluster 47 Tucanae, we estimate the time when the progenitor star lost the bulk of its mass to become a white dwarf.
Antolini, Elisa +6 more
core +2 more sources
Proton Acceleration with Relativistic Electromagnetic Shock
Advanced Science, EarlyView.New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Ting Xiao +5 more
wiley +1 more source
The Astrophysical JournalIRAS 00500+6713 is a hypothesized remnant of a Type Iax supernova SN 1181. Multiwavelength observations have revealed its complicated morphology; a dusty infrared ring is sandwiched by the inner and outer X-ray nebulae. We analyze the archival X-ray data
Takatoshi Ko +8 more
doaj +1 more source
Open Astronomy, 2017 Evolved stars with a helium core can be formed by non-conservative mass exchange interaction with a companion or by strong mass loss. Their masses are smaller than 0.5 M⊙. In the database of the Sloan Digital Sky Survey (SDSS), there are several thousand
Pelisoli Ingrid +2 more
doaj +1 more source
The Q Branch Cooling Anomaly Can Be Explained by Mergers of White Dwarfs and Subgiant Stars
The Astrophysical Journal Letters, 2023 Gaia's exquisite parallax measurements allowed for the discovery and characterization of the Q branch in the Hertzsprung–Russell diagram, where massive C/O white dwarfs (WDs) pause their dimming due to energy released during crystallization ...
Ken J. Shen +2 more
doaj +1 more source
Seismic Cartography of White-Dwarf Interiors From the Toulouse-Montréal Optimal-Design Approach
Frontiers in Astronomy and Space Sciences, 2022 Probing internal properties of white-dwarf stars has been amongst the earliest objectives of asteroseismology, following the first discovery in the late 1960s of non-radial pulsations in these evolved compact stars.
Noemi Giammichele +2 more
doaj +1 more source
The seismic properties of low-mass He-core white dwarf stars [PDF]
, 2012 Context. In recent years, many low-mass (0.45 M ) white dwarf stars expected to harbor He cores have been detected in the field of the Milky Way and in several galactic globular and open clusters.
A. C'orsico +3 more
semanticscholar +1 more source
Magnetic White Dwarf Stars [PDF]
Publications of the Astronomical Society of the Pacific, 1996 Three aspects of magnetic white dwarf stars are studied to aid in the understanding of stellar evolution. A survey of ~ 50 DC white dwarf stars was conducted in circular spectropolarimetry to search for magnetic fields >~ 30 kG. Four DC stars were discovered with magnetic fields above 30 kG: G 111-49 with Be ~ -220 MG, G 183-35 with Be= +6.8 ± 0.5 MG ...
openaire +2 more sources