Results 1 to 10 of about 195,665 (278)

Chemical Evolution of Galaxies [PDF]

Publications of the Astronomical Society of the Pacific, 2000
Chemical evolution of galaxies brings together ideas on stellar evolution and nucleosynthesis with theories of galaxy formation, star formation and galaxy evolution, with all their associated uncertainties.
Arimoto N., Arnaud M., B. E. J. Pagel, Beers T. C., Edvardsson B., Fuhrmann K., Gasson R. E. M., Gratton R., Gustafsson B., Hoyle F., Larson R. B., Madau P., Maeder A., Marigo P., Matteucci F., Nissen P. E., Pagel B. E. J., Pagel B. E. J., Renzini A., Scalo J., Thielemann F.-K., White S. D. M.   +21 more
core   +13 more sources

Modelling the chemical evolution of the Galaxy halo [PDF]

Astronomy & Astrophysics, 2013
We study the chemical evolution and formation of the Galactic halo through the analysis of its stellar metallicity distribution function and some key elemental abundance patterns.
Brusadin, G., Matteucci, F., Romano, D.
core   +8 more sources

Disk Galaxy Models Driven by Stochastic Self-Propagating Star Formation

Open Astronomy, 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.
doaj   +3 more sources

Dynamical and chemical evolution of gas-rich dwarf galaxies [PDF]

, 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   +2 more sources

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

, 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   +2 more sources

Assessing stellar yields in Galaxy chemical evolution: Observational stellar abundance patterns [PDF]

Monthly notices of the Royal Astronomical Society, 2023
One-zone Galactic Chemical Evolution (GCE) models have provided useful insights on a great wealth of average abundance patterns in many environments, especially for the Milky Way and its satellites.
Jinning Liang, E. Gjergo, Xilong Fan
semanticscholar   +1 more source

The chemical evolution of the dwarf spheroidal galaxy Sextans [PDF]

Astronomy & Astrophysics, 2019
We present our analysis of the FLAMES dataset targeting the central 25′ region of the Sextans dwarf spheroidal galaxy (dSph). This dataset is the third major part of the high-resolution spectroscopic section of the ESO large program 171.B-0588(A ...
R. Theler, P. Jablonka, R. Lucchesi, C. Lardo, P. North, M. Irwin, G. Battaglia, V. Hill, E. Tolstoy, K. Venn, A. Helmi, A. Kaufer, F. Primas, M. Shetrone   +13 more
semanticscholar   +1 more source

EMPRESS. XI. SDSS and JWST Search for Local and z ∼4–5 Extremely Metal-poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs

The Astrophysical Journal, 2023
We search for local extremely metal-poor galaxies (EMPGs), selecting photometric candidates by broadband color excess and machine-learning techniques with the SDSS photometric data.
Moka Nishigaki, Masami Ouchi, Kimihiko Nakajima, Yoshiaki Ono, Michael Rauch, Yuki Isobe, Yuichi Harikane, Kanako Narita, Fakhri Zahedy, Yi Xu, Hidenobu Yajima, Hajime Fukushima, Yutaka Hirai, Ji Hoon Kim, Shigeki Inoue, Haruka Kusakabe, Chien-Hsiu Lee, Tohru Nagao, Masato Onodera   +18 more
doaj   +1 more source

Nitrogen isotopes in the interstellar medium: A chemical journey across the Galaxy [PDF]

EPJ Web of Conferences, 2022
One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. This is the process that distributes the less abundant stable isotopes of an element
Colzi Laura, Fontani Francesco, Rivilla Víctor M., Caselli Paola   +3 more
doaj   +1 more source

Galaxy chemical evolution models : the role of molecular gas formation [PDF]

, 2017
In our classical grid of multiphase chemical evolution models, star formation in the disc occurs in two steps: first, molecular gas forms, and then stars are created by cloud-cloud collisions or interactions of massive stars with the surrounding ...
M. Moll'a, 'Angeles I. D'iaz, Y. Ascasibar, B. Gibson   +3 more
semanticscholar   +1 more source