Results 21 to 30 of about 59,850 (232)

Chemical enrichment in very low-metallicity environments: Bootes I [PDF]

, 2014
We present different chemical evolution models for the ultrafaint dwarf galaxy Bootes I. We either assume that the galaxy accretes its mass through smooth infall of gas of primordial chemical composition (classical models) or adopt mass accretion ...
Bellazzini, Michele, Leaman, Ryan, Romano, Donatella, Starkenburg, Else   +3 more
core   +2 more sources

A High-precision Survey of the D/H Ratio in the Nearby Interstellar Medium

The Astrophysical Journal, 2023
We present high signal-to-noise ratio measurements of the H i Ly α absorption line toward 16 Galactic targets that are at distances between approximately 190 and 2200 pc, all beyond the wall of the Local Bubble.
Scott D. Friedman, Pierre Chayer, Edward B. Jenkins, Todd M. Tripp, Gerard M. Williger, Guillaume Hébrard, Paule Sonnentrucker   +6 more
doaj   +1 more source

Galaxy formation with radiative and chemical feedback [PDF]

, 2015
Here we introduce GAMESH, a novel pipeline which implements self-consistent radiative and chemical feedback in a computational model of galaxy formation. By combining the cosmological chemical-evolution model GAMETE with the radiative transfer code CRASH,
de Bennassuti, M., Graziani, L., Kawata, D., Maselli, A., Salvadori, S., Schneider, R.   +5 more
core   +3 more sources

ChemicalUniverseMachine. I. Uncovering the Cosmic Evolution of Metals in the Galaxy–Interstellar Medium–Circumgalactic Medium Ecosystem

The Astrophysical Journal
We present an empirical chemical evolution model that explains the distribution of metals in the interstellar medium (ISM) and the circumgalactic medium (CGM) of galaxies based on the U niverse M achine and N eutral U niverse M achine models in the ...
Moka Nishigaki, Peter Behroozi, Masami Ouchi, Hong Guo, Rachel S. Somerville, Anna R. Gallazzi, Kimihiko Nakajima, Kuria Watanabe   +7 more
doaj   +1 more source

Dust-regulated galaxy formation and evolution:A new chemodynamical model with live dust particles

, 2015
Interstellar dust plays decisive roles in the conversion of neutral to molecular hydrogen (H_2), the thermodynamical evolution of interstellar medium (ISM), and the modification of spectral energy distributions (SEDs) of galaxies.
Bekki, Kenji
core   +1 more source

Cosmological formation and chemical evolution of an elliptical galaxy [PDF]

, 2009
We aim at studying the effect of a cosmologically motivated gas infall law for the formation of a massive elliptical galaxy in order to understand its impact on the formation of the spheroids.
A. Pipino, Arimoto, Bildfell, Bower, Carollo, Chiosi, Colavitti, Davies, E. Colavitti, F. Matteucci, Greggio, Hicks, Iben, Kauffmann, Kauffmann, Kaviraj, Kaviraj, Kawata, Kawata, Kormendy, Kuntschner, Larson, Mannucci, Martinelli, Matteucci, Matteucci, Matteucci, Matteucci, Merlin, Nagashima, Nelan, O'Dea, Pagel, Pipino, Pipino, Salim, Springel, Tantalo, Thomas, Thomas, Thomas, Trager, Trager, Weiss, White, Woosley, Worthey, Yi   +47 more
core   +1 more source

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +1 more source

Figuring Out Gas and Galaxies In Enzo (FOGGIE). VIII. Complex and Stochastic Metallicity Gradients at z > 2

The Astrophysical Journal
Gas-phase metallicity gradients are a crucial element in understanding the chemical evolution of galaxies. We use the FOGGIE simulations to study the metallicity gradients (∇ Z ) of six Milky Way–like galaxies throughout their evolution.
Ayan Acharyya, Molly S. Peeples, Jason Tumlinson, Brian W. O’Shea, Cassandra Lochhaas, Anna C. Wright, Raymond C. Simons, Ramona Augustin, Britton D. Smith, Eugene Hyeonmin Lee   +9 more
doaj   +1 more source

Stellar populations in gas-rich galaxy mergers I. Dependence on star formation history

, 1998
We investigate the nature of stellar populations of major galaxy mergers between late-type spirals considerably abundant in interstellar medium by performing numerical simulations designed to solve both the dynamical and chemical evolution in a self ...
Bekki, Kenji, Shioya, Yasuhiro
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source