Results 81 to 90 of about 195,665 (278)

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

GALACTIC CHEMICAL EVOLUTION: THE IMPACT OF THE 13C-POCKET STRUCTURE ON THE s-PROCESS DISTRIBUTION [PDF]

, 2017
The solar s-process abundances have been analyzed in the framework of a Galactic Chemical Evolution (GCE) model. The aim of this work is to implement the study by Bisterzo et al., who investigated the effect of one of the major uncertainties of ...
S. Bisterzo, C. Travaglio, M. Wiescher, F. Käppeler, R. Gallino   +4 more
semanticscholar   +1 more source

The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey

The Astrophysical Journal Letters
We present the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey, a deep slitless spectroscopic and imaging Cycle 1 JWST treasury survey designed to constrain feedback mechanisms in low-mass galaxies across cosmic time. NGDEEP targets
Micaela B. Bagley, Nor Pirzkal, Steven L. Finkelstein, Casey Papovich, Danielle A. Berg, Jennifer M. Lotz, Gene C. K. Leung, Henry C. Ferguson, Anton M. Koekemoer, Mark Dickinson, Jeyhan S. Kartaltepe, Dale D. Kocevski, Rachel S. Somerville, L. Y. Aaron Yung, Bren E. Backhaus, Caitlin M. Casey, Marco Castellano, Óscar A. Chávez Ortiz, Katherine Chworowsky, Isabella G. Cox, Romeel Davé, Kelcey Davis, Vicente Estrada-Carpenter, Adriano Fontana, Seiji Fujimoto, Jonathan P. Gardner, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Taylor A. Hutchison, Anne E. Jaskot, Intae Jung, Lisa J. Kewley, Allison Kirkpatrick, Rebecca L. Larson, Jasleen Matharu, Priyamvada Natarajan, Laura Pentericci, Pablo G. Pérez-González, Swara Ravindranath, Barry Rothberg, Russell Ryan, Lu Shen, Raymond C. Simons, Gregory F. Snyder, Jonathan R. Trump, Stephen M. Wilkins   +47 more
doaj   +1 more source

JINA-NuGrid Galactic Chemical Evolution Pipeline

, 2016
Galactic chemical evolution is a topic that involves nuclear physics, stellar evolution, galaxy evolution, observation, and cosmology. Continuous communication and feedback between these fields is a key component in improving our understanding of how ...
Côté, Benoit, Fryer, Chris L., Herwig, Falk, Jones, Samuel, O'Shea, Brian W., Pignatari, Marco, Ritter, Christian, Silvia, Devin   +7 more
core   +1 more source

The AMBRE project: chemical evolution models for the Milky Way thick and thin discs [PDF]

, 2017
We study the chemical evolution of the thick and thin discs of the Galaxy by comparing detailed chemical evolution models with recent data from the AMBRE Project.
V. Grisoni, E. Spitoni, F. Matteucci, F. Matteucci, A. Recio-Blanco, P. Laverny, M. Hayden, Š. Mikolaitis, Š. Mikolaitis, C. Worley   +9 more
semanticscholar   +1 more source

Strong He i Emission Lines in High N/O Galaxies at z ∼ 6 Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities?

The Astrophysical Journal
We present He i /H β flux and He/H abundance ratios in three James Webb Space Telescope galaxies with significant constraints on N/O abundance ratios, GS-NDG-9422, RXCJ2248-ID, and GLASS150008 at z ∼ 6 mostly with the spectroscopic coverage from He i λ ...
Hiroto Yanagisawa, Masami Ouchi, Kuria Watanabe, Akinori Matsumoto, Kimihiko Nakajima, Hidenobu Yajima, Kentaro Nagamine, Koh Takahashi, Minami Nakane, Nozomu Tominaga, Hiroya Umeda, Hajime Fukushima, Yuichi Harikane, Yuki Isobe, Yoshiaki Ono, Yi Xu, Yechi Zhang   +16 more
doaj   +1 more source

Continuous star formation in IZw18

, 2004
We study the dynamical and chemical evolution of a galaxy similar to IZw18 under the assumption of a continuous star formation during bursts. We adopt a 2-D hydrocode coupled with detailed chemical yields originating from SNeII, SNeIa and from single ...
A. D'Ercole, Aloisi, Aloisi, Aloisi, Alvensleben, Anders, Argast, Brown, Cannon, Carigi, Chiappini, Chiappini, D'Ercole, Davidson, Davidson, de Avillez, de Mello, De Young, Dufour, Dufour, Dufour, Ehlerová, F. Matteucci, French, Fryer, Fryer, Garnett, Garnett, Grebel, Greggio, Greggio, Henry, Hirashita, Holweger, Hunt, Hunter, Izotov, Izotov, Izotov, Kinman, Kobayashi, Kobayashi, Koo, Kroupa, Kroupa, Kroupa, Kunth, Kunth, Kunth, Kunth, Larsen, Larsen, Lecavelier des Etangs, Legrand, Legrand, Legrand, Legrand, Leitherer, Lequeux, Lequeux, Levshakov, M. Tosi, MacLow, Marcolini, Martin, Martin, Mas-Hesse, Matsumoto, Matteucci, Matteucci, Matteucci, Matteucci, Melioli, Meurer, Meynet, Pagel, Papaderos, Pettini, Pipino, Recchi, Recchi, Renzini, S. Recchi, Salpeter, Sargent, Scalo, Searle, Silich, Skillman, Strickland, Strickland, Summers, Takeuchi, Theis, Thuan, Timmes, Vallenari, van den Hoek, van Zee, Vanzi, Vorobyov, Vílchez, Weaver, Woosley, Zwicky, Östlin   +105 more
core   +1 more source

Chemical evolution of local galaxies

, 2022
We show the results of a study using the spectral synthesis technique study to measure the chemical evolution of local galaxies. The main parameters measured are the chemical enrichment history (ChEH) and the evolution of the stellar mass-metallicity relation (MZR) over cosmic time.
Artemi Camps Fariña, Patricia Sánchez Blázquez, Sebastián F. Sánchez   +2 more
openaire   +1 more source

The stellar populations of spiral disks.II Measuring and modeling the radial distribution of absorption spectral indices [PDF]

, 1998
The radial distributions of the Mg2 and Fe5270 Lick spectral indices have been measured to large radial distances on the disks of NGC 4303 and NGC 4535 using an imaging technique based on interference filters.
Branch D., Chincarini G., Distefano A., Dominique Beauchamp, Edmunds M. G., Edmunds M. G., Eduardo Hardy, Edvardsson B., Ferrini F., Ferrini F., Friedli D., Gotz M., Henry R. B. C., Henry R. B. C., Henry R. B. C., Henry R. B. C., Jones B. J. T., Knapen J. H., Knapen J. H., Lequeux J., Maeder A., Mercedes Molla, Palacios J., Pitts E., Prantzos N., Renzini A., Tinsley B., Vila-Costas B., Warmels R. H.   +28 more
core   +2 more sources

The Chemical Evolution Carousel of Spiral Galaxies: Azimuthal Variations of Oxygen Abundance in NGC1365 [PDF]

, 2017
The spatial distribution of oxygen in the interstellar medium of galaxies is the key to understanding how efficiently metals that are synthesized in massive stars can be redistributed across a galaxy.
I-Ting 庭 Ho 何宜, M. Seibert, S. Meidt, R. Kudritzki, C. Kobayashi, B. Groves, L. Kewley, B. Madore, J. Rich, E. Schinnerer, Joshua J. D'Agostino, H. Poetrodjojo   +11 more
semanticscholar   +1 more source