Results 31 to 40 of about 59,850 (232)

Revisiting the Fundamental Metallicity Relation with Observation and Simulation

The Astrophysical Journal Letters
The gas-phase metallicity of galaxies is regulated by multiple astrophysical processes, which makes it a crucial diagnostic of galaxy formation and evolution.
Chengyu Ma, Kai Wang, Enci Wang, Yingjie Peng, Haochen Jiang, Haoran Yu, Cheng Jia, Zeyu Chen, Haixin Li, Xu Kong   +9 more
doaj   +1 more source

Gas-phase Metallicity of Local Active Galactic Nuclei in the GASP and MaNGA Surveys: The Role of Ram Pressure Stripping

The Astrophysical Journal, 2023
Growing evidence in support of a connection between active galactic nuclei (AGN) activity and the ram pressure stripping (RPS) phenomenon has been found both observationally and theoretically in the past decades.
Giorgia Peluso, Mario Radovich, Alessia Moretti, Matilde Mingozzi, Benedetta Vulcani, Bianca M. Poggianti, Antonino Marasco, Marco Gullieuszik   +7 more
doaj   +1 more source

Dynamical and chemical evolution of gas-rich dwarf galaxies

, 2000
We study the effect of a single, instantaneous starburst on the dynamical and chemical evolution of a gas-rich dwarf galaxy, whose potential well is dominated by a dark matter halo. We follow the dynamical and chemical evolution of the ISM by means of an
Aloisi, Anders, Annibale D'Ercole, Bedogni, Begelman, Begelman, Borkowski, Bradamante, Breitschwerdt, Ciotti, Cowie, D'Ercole, De Young, De Young, Dekel, Devost, Dufour, Dufour, Francesca Matteucci, Garnett, Garnett, Gibson, Gibson, Greggio, Hunter, Israel, Kahn, Kobulnicky, Koo, Kunth, Kunth, Larson, Leitherer, Lequeux, Loewenstein, MacLow, MacLow, MacLow, Marconi, Marlowe, Martin, Mas-Hesse, Mathews, Matteucci, Matteucci, Matteucci, Matteucci, McKee, Meurer, Meurer, Nomoto, Olofsson, Padovani, Pettini, Pilyugin, Pilyugin, Portinari, Reimers, Renzini, Rieschick, Saitō, Salpeter, Sandage, Silich, Simone Recchi, Skillman, Skillman, Skillman, Skillman, Skillman, Slavin, Smith, Spitzer, Stasin`ka, Stone, Stone, Strickland, Suchkov, Tenorio-Tagle, Vader, Van Zee, Viallefond, Weaver, Woosley   +83 more
core   +1 more source

The Chemical Evolution of the Draco Dwarf Spheroidal Galaxy [PDF]

, 2009
We present an abundance analysis based on high resolution spectra of 8 stars selected to span the full range in metallicity in the Draco dwarf spheroidal galaxy. We find [Fe/H] for the sample stars ranges from -1.5 to -3.0 dex.
Cohen, Judith G., Huang, Wenjin
core   +2 more sources

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

EMPRESS. XIII. Chemical Enrichment of Young Galaxies Near and Far at z ∼ 0 and 4–10: Fe/O, Ar/O, S/O, and N/O Measurements with a Comparison of Chemical Evolution Models

The Astrophysical Journal
We present gas-phase elemental abundance ratios of thirteen local extremely metal-poor galaxies (EMPGs), including our new Keck/LRIS spectroscopy determinations together with 33 James Webb Space Telescope z ∼ 4–10 star-forming galaxies in the literature,
Kuria Watanabe, Masami Ouchi, Kimihiko Nakajima, Yuki Isobe, Nozomu Tominaga, Akihiro Suzuki, Miho N. Ishigaki, Ken’ichi Nomoto, Koh Takahashi, Yuichi Harikane, Shun Hatano, Haruka Kusakabe, Takashi J. Moriya, Moka Nishigaki, Yoshiaki Ono, Masato Onodera, Yuma Sugahara   +16 more
doaj   +1 more source

A chemical evolution model for galaxy clusters [PDF]

, 2001
We develop a toy-model for the chemical evolution of the intracluster medium, polluted by the galactic winds from elliptical galaxies. The model follows the "galaxy formation history" of cluster galaxies, constrained by the observed luminosity function ...
Chiosi, C., Moretti, A., Portinari, L.
core   +1 more source

The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage [PDF]

, 2019
We present the first chemical evolution model for Enceladus, alias the Gaia Sausage, to investigate the star formation history of one of the most massive satellites accreted by the Milky Way during a major merger event.
Aguirre, Victor Silva, Calura, Francesco, Cescutti, Gabriele, Matteucci, Francesca, Miglio, Andrea, Spitoni, Emanuele, Vincenzo, Fiorenzo   +6 more
core   +4 more sources

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

INHOMOGENEITIES OF CHEMICAL COMPOSITION AND COSMOCHRONOLOGY PROBLEMS

Odessa Astronomical Publications, 2017
The problems of determination of chemical composition of stars and connection with theory of chemical evolution of Galaxy are discussed.
V. G. Klochkova, V. E. Panchuk
doaj   +1 more source