Results 81 to 90 of about 59,474 (295)

Mapping Multiphase Metals in Star-forming Galaxies: A Spatially Resolved UV+Optical Study of NGC 5253

The Astrophysical Journal
We present a pioneering, spatially resolved, multiphase gas abundance study on the blue compact dwarf galaxy NGC 5253, targeting 10 star-forming (SF) clusters inside six far-UV (FUV) Hubble Space Telescope/Cosmic Origins Spectrograph (COS) pointings with
Valentina Abril-Melgarejo, Bethan L. James, Alessandra Aloisi, Matilde Mingozzi, Vianney Lebouteiller, Svea Hernandez, Nimisha Kumari, AAS Journals Data Editors   +7 more
doaj   +1 more source

The Chemical Evolution of Narrow Emission Line Galaxies: the Key to their Formation Processes The Chemical Evolution of Narrow Emission Line Galaxies: the Key to their Formation Processes

Acta Universitaria, 2012
Utilizando la mayor muestra de galaxias con líneas de emisión angostas disponible hasta el momento, se muestra que sus características espectrales están correlacionadas con diferentes parámetros físicos, como las abundancias químicas, las morfologías ...
R. A. Ortega-Minakata, R. Coziol, J. P Torres-Papaqui   +2 more
doaj  

The Chemical Evolution of the Milky Way

, 1999
The field of chemical evolution modeling of the Galaxy is experiencing in the last years a phase of high activity and important achievements. There are, however, several open questions which still need to be answered. In this review I summarize what have
A Pasquali, A Renzini, AA Penzias, AI Boothroyd, B Barbuy, B Edvardsson, C Chiappini, CG Lacey, E Anders, F Matteucci, Forestini, JM Scalo, LB van den Hoek, M Tosi, M Tosi, M Tosi, M Tosi, N Prantzos, P Kroupa, PA Shaver, R Wielen, Rocha, S Boissier, S Smartt, SE Woosley, T.C. Beers, WJ Maciel, WJ Maciel   +27 more
core   +1 more source

Shelf‐Life Enhancement of Sugarcane Juice With Herbal Extracts: Extracted Through Novel Microwave‐Assisted Drying Extraction Technique

Food Safety and Health, EarlyView.
ABSTRACT Antioxidants in foods delay or prevent the oxidation of the food. Previously, synthetic antioxidants were commonly used in food formulations, but, due to safety concerns, interest in natural antioxidants has intensified. A novel microwave‐assisted drying extraction process was adopted to dry mint and coriander leaves.
Zarnab Asif, Tayyaba Alvi, Muhammad Kashif Iqbal Khan, Arslan Kareem   +3 more
wiley   +1 more source

An inefficient dwarf: Chemical abundances and the evolution of the Ursa Minor dwarf spheroidal galaxy

, 2015
We present detailed chemical element abundance ratios of 17 elements in three metal poor stars in the Ursa Minor dwarf spheroidal galaxy, which we combine with extant data from the literature to assess the predictions of a novel suite of galaxy chemical ...
Cescutti, Gabriele, Feltzing, Sofia, Kleyna, Jan, Koch, Andreas, Ural, Ugur, Wilkinson, Mark I.   +5 more
core   +1 more source

Stellar migrations and metal flows – Chemical evolution of the thin disc of a simulated Milky Way analogous galaxy [PDF]

, 2020
Fiorenzo Vincenzo, Chiaki Kobayashi
openalex   +1 more source

Potential-driven Metal Cycling: JADES Census of Gas-phase Metallicity for Galaxies at 1 < z < 7

The Astrophysical Journal Letters
The gravitational potential is established as a critical determinant of gas-phase metallicity (12+log(O/H)) in low-redshift galaxies, whereas its influence remains unconfirmed at high redshifts.
Cheng Jia, Enci Wang, Cheqiu Lyu, Chengyu Ma, Jie Song, Yangyao Chen, Kai Wang, Haoran Yu, Zeyu Chen, Jinyang Wang, Yifan Wang, Xu Kong   +11 more
doaj   +1 more source

Heavy Element Nucleosynthesis

EPJ Web of Conferences, 2018
This contribution deals with the important subject of the nucleosynthesis of heavy elements in the Galaxy. After an overview of several observational features, the physical processes responsible mainly for the formation of heavy elements will be ...
El Eid Mounib F.
doaj   +1 more source

Exploring the Effects of Reduced Gravitational Field Impacts on Convective Heat Transfer: A Comprehensive Review

Heat Transfer, EarlyView.
ABSTRACT This review explores the impact of gravitational instability on convective heat transfer, integrating existing research results and theoretical models. Gravitational instability is vital in promoting or hindering convective actions in different systems, such as atmospheric events, ocean currents, and industrial processes.
Hossam A. Nabwey, Muhammad Ashraf, A. M. Rashad, Ali J. Chamkha   +3 more
wiley   +1 more source

Spatial Variations of Stellar Elemental Abundances in FIRE Simulations of Milky Way-mass Galaxies: Patterns Today Mostly Reflect Those at Formation

The Astrophysical Journal
Spatial patterns of stellar elemental abundances encode rich information about a galaxy’s formation history. We analyze the radial, vertical, and azimuthal variations of metals in stars, both today and at formation, in the FIRE-2 cosmological simulations
Russell L. Graf, Andrew Wetzel, Matthew A. Bellardini, Jeremy Bailin   +3 more
doaj   +1 more source