Results 71 to 80 of about 208,712 (346)
Evolution of galaxy habitability [PDF]
Astronomy & Astrophysics, 2016 We combine a semi-analytic model of galaxy evolution with constraints on circumstellar habitable zones and the distribution of terrestrial planets to probe the suitability of galaxies of different mass and type to host habitable planets, and how it evolves with time.
Sungwook E. Hong, Raphael Gobat
openaire +4 more sources
Disk Galaxy Models Driven by Stochastic Self-Propagating Star Formation
, 2010 We present a model of chemical and spectrophotometric evolution of disk galaxies based on a stochastic self-propagating star formation scenario. The model incorporates galaxy formation through the process of accretion, chemical and photometric evolution ...
Mineikis, T., Vansevičius, V.
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
Local Star-forming Galaxies Build Up Central Mass Concentration Most Actively near M ∗ = 1010 M ⊙
The Astrophysical Journal, 2023 To understand in what mass regime star-forming galaxies (SFGs) build up central mass concentration most actively, we present a study on the luminosity-weighted stellar age radial gradient (∇ _age ) distribution of ∼3600 low-redshift SFGs using the MaNGA ...
Zhizheng Pan, Xianzhong Zheng, Xu Kong
doaj +1 more source
Advanced Science, EarlyView.A photovoltaic/photomultiplication dual‐mode organic photodetector is developed by integrating two different organic bulk‐heterojunctions, one introduces the photovoltaic effect, and the other triggers photomultiplication charge generation in the stacked device at different voltage polarities.
Xin Hu +6 more
wiley +1 more source
Modeling the Ages and Chemical Abundances of Elliptical Galaxies
The Astrophysical JournalSpectroscopic studies of elliptical galaxies show that their stellar population ages, mean metallicity, and α enhancement traced by [Mg/Fe] all increase with galaxy stellar mass or velocity dispersion.
Nicole Marcelina Gountanis +5 more
doaj +1 more source
The Astrophysical Journal, 2023 We identify the intrinsic dependence of star formation quenching on a variety of galactic and environmental parameters, utilizing a machine-learning approach with Random Forest classification.
Asa F. L. Bluck +2 more
doaj +1 more source
Gas circulation and galaxy evolution
, 2010 Galaxies must form and evolve via the acquisition of gas from the intergalactic environment, however the way this gas accretion takes place is still poorly understood.
Fraternali, Filippo
core +1 more source
Advanced Science, EarlyView.This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley +1 more source
The Astrophysical JournalThis study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of ∼2000 stars in the Galactic bulge bar spatially contained within ∣ X _Gal ∣ < 5 kpc, ∣ Y _Gal ∣ < 3.5 ...
J. V. Sales-Silva +30 more
doaj +1 more source