Results 101 to 110 of about 1,424,303 (245)
Lithium abundance and stellar rotation in the Galactic halo and thick disc
Astronomy & AstrophysicsThe stellar evolution of lithium-rich (Li-rich) giant stars at very low metallicities remains largely unexplored to date. Using mainly two recent large LAMOST catalogues of field, low-mass giant stars (both Li-rich and Li-poor) with metallicities ranging
de la Reza R. +3 more
doaj +1 more source
EVOLUTION OF THERMALLY PULSING ASYMPTOTIC GIANT BRANCH STARS. IV. CONSTRAINING MASS LOSS AND LIFETIMES OF LOW MASS, LOW METALLICITY AGB STARS [PDF]
, 2014 The evolution and lifetimes of thermally pulsating asymptotic giant branch (TP-AGB) stars suffer from significant uncertainties. In this work, we analyze the numbers and luminosity functions of TP-AGB stars in six quiescent, low metallicity ([Fe/H] ≲ −0 ...
P. Rosenfield +9 more
semanticscholar +1 more source
Fluorine Production in Asymptotic Giant Branch Stars [PDF]
Symposium - International Astronomical Union, 2000 The present status of our understanding of fluorine production in asymptotic giant branch stars is reviewed, and future perspectives are presented.
Mowlavi, Nami +2 more
openaire +2 more sources
International Journal of Differential Equations, Volume 2026, Issue 1, 2026.This study introduces a novel fractal–fractional extension of the Hodgkin–Huxley model to capture complex neuronal dynamics, with particular focus on intrinsically bursting patterns. The key innovation lies in the simultaneous incorporation of Caputo–Fabrizio operators with fractional order α for memory effects and fractal dimension τ for temporal ...
M. J. Islam +4 more
wiley +1 more source
Nucleosynthesis in low-mass stars: Shedding light on the cosmic origin of heavy elements [PDF]
EPJ Web of ConferencesLow-mass, low-metallicity stars while evolving through the asymptotic giant branch (AGB) phase undergo significant nucleosynthesis producing the majority of slow (s-) and intermedite (i-) neutron capture elements.
Goswami Aruna
doaj +1 more source
Goos–Hänchen effect singularities in transdimensional plasmonic films
Nanophotonics, Volume 14, Issue 25, Page 4513-4530, December 2025.Abstract We identify and classify topologically protected singularities for the reflection coefficient of transdimensional plasmonic systems. Originating from nonlocal electromagnetic response due to vertical electron confinement in the system, such singularities lead to lateral (angular) Goos–Hänchen shifts on the millimeter (milliradian) scale in the
Svend‐Age Biehs, Igor V. Bondarev
wiley +1 more source
Mira Variables Based on Emission Lines in LAMOST DR9
The Astrophysical JournalWe present a sample of 335 Mira variables, extracted from DR9 of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey. These variables are characterized by the Balmer emissions (H δ , H γ , H β , and H α ) and the metal emissions
Cai-Xia Qu +3 more
doaj +1 more source
The Astrophysical Journal, 2023 By using direct N -body numerical simulations, we model the dynamical coevolution of two supermassive black holes (SMBHs) and the surrounding stars in merging galaxies. In order to investigate how different stellar components evolve during the merger, we
Shuo Li +5 more
doaj +1 more source
NUCLEOSYNTHESIS IN ELECTRON CAPTURE SUPERNOVAE OF ASYMPTOTIC GIANT BRANCH STARS [PDF]
, 2008 We examine nucleosynthesis in the electron capture supernovae of progenitor asymptotic giant branch stars with an O–Ne–Mg core (with the initial stellar mass of 8.8 M☉).
S. Wanajo +4 more
semanticscholar +1 more source
Fish and Fisheries, Volume 26, Issue 5, Page 848-865, September 2025.ABSTRACT For data‐limited fish species, sustainable management frequently relies on biological metrics that are derived from life‐history trait data, as opposed to high‐resolution time series of catch and abundance. These biological metrics are used to assess a species' recovery potential at low population densities, as well as their extinction risk ...
Catharine Horswill +7 more
wiley +1 more source