Results 71 to 80 of about 69,893 (289)
Seismological constraints on the high-gravity DOV stars PG2131+066 and PG 1707+427 [PDF]
, 2009 A seismological study of the pulsating PG1159 stars PG2131+066 and PG 1707+427 is presented. We perform extensive adiabatic computations of g-mode pulsation periods of PG1159 evolutionary models with stellar masses ranging from 0.530 to 0.741 Msun.
A H Córsico +5 more
core +3 more sources
Evolutionary models of rotating dense stellar systems: challenges in software and hardware [PDF]
Proceedings of the International Astronomical Union, 2014 AbstractWe present evolutionary models of rotating self-gravitating systems (e.g. globular clusters, galaxy cores). These models are characterized by the presence of initial axisymmetry due to rotation. Central black hole seeds are alternatively included in our models, and black hole growth due to consumption of stellar matter is simulated until the ...
openaire +1 more source
Detailed AGB evolutionary models and near-infrared colours of intermediate-age stellar populations: tests on star clusters [PDF]
Astronomy & Astrophysics, 2014 12 pages, 14 figures, accepted for publication in A& ...
Salaris, M. +4 more
openaire +2 more sources
Diversity and complexity in neural organoids
FEBS Letters, EarlyView.Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley +1 more source
The Astrophysical Journal Supplement SeriesHelium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops—the part of the evolutionary track at which the instability strip is crossed.
O. Ziółkowska +5 more
doaj +1 more source
Stellar evolutionary models: uncertainties and systematics
, 2005 In this last decade, our knowledge of evolutionary and structural properties of stars of different mass and chemical composition is significantly improved. This result has been achieved as a consequence of our improved capability in understanding and describing the physical behavior of stellar matter in the different thermal regimes characteristic of ...
openaire +2 more sources
Young LMC star clusters as a test for stellar evolutionary models:
, 1994 We compare the observed colour-magnitude diagrams (CMD) and the main sequence luminosity functions (LFs) of four Large Magellanic Cloud (LMC) star clusters namely, NGC 1711, NGC 2004, NGC 2164 and NGC 2214 with the synthetic ones derived from the stellar evolutionary models.
Subramaniam, Annapurni, Sagar, Ram
openaire +2 more sources
The Astrophysical Journal, 2022 Abstract Brown dwarfs can serve as both clocks and chemical tracers of the evolutionary history of the Milky Way due to their continuous cooling and high sensitivity of spectra to composition. We focus on brown dwarfs in globular clusters that host some of the oldest coeval populations in the galaxy.
Roman Gerasimov +7 more
openaire +3 more sources
FEBS Letters, EarlyView.Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas +3 more
wiley +1 more source
Asteroseismology: Looking for Axions in the Red Supergiant Star Alpha Ori
The Astrophysical Journal, 2023 In this work, for the first time, we use seismic data as well as surface abundances to model the supergiant α -Ori, with the goal of setting an upper bound on the axion–photon coupling constant g _a _γ . We find that, in general, stellar models with g _a
Clara Severino, Ilídio Lopes
doaj +1 more source