Results 1 to 10 of about 59,953 (186)

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   +7 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

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   +4 more sources

Galaxy Formation and Chemical Evolution

International Journal of Astronomy and Astrophysics, 2014
14 pages, 5 ...
S Sahijpal
exaly   +4 more sources

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

Monthly Notices of the Royal Astronomical Society, 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 ...
G Cescutti, , S Feltzing
exaly   +3 more sources

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

JWST/NIRSpec Measurements of Extremely Low Metallicities in High Equivalent Width Lyα Emitters

The Astrophysical Journal, 2023
Deep Very Large Telescope/MUSE optical integral field spectroscopy has recently revealed an abundant population of ultra-faint galaxies ( M _UV ≈ −15; 0.01 L _⋆ ) at z = 2.9−6.7 due to their strong Ly α emission with no detectable continuum.
Michael V. Maseda, Zach Lewis, Jorryt Matthee, Joseph F. Hennawi, Leindert Boogaard, Anna Feltre, Themiya Nanayakkara, Roland Bacon, Amy Barger, Jarle Brinchmann, Marijn Franx, Takuya Hashimoto, Hanae Inami, Haruka Kusakabe, Floriane Leclercq, Lucie Rowland, Anthony J. Taylor, Christy Tremonti, Tanya Urrutia, Joop Schaye, Charlotte Simmonds, Eloïse Vitte   +21 more
doaj   +1 more source

Evolution of the Mass–Metallicity Relation from Redshift z ≈ 8 to the Local Universe

The Astrophysical Journal, 2023
A tight positive correlation between the stellar mass and the gas-phase metallicity of galaxies has been observed at low redshifts. The redshift evolution of this correlation can strongly constrain theories of galaxy evolution.
Danial Langeroodi, Jens Hjorth, Wenlei Chen, Patrick L. Kelly, Hayley Williams, Yu-Heng Lin, Claudia Scarlata, Adi Zitrin, Tom Broadhurst, Jose M. Diego, Xiaosheng Huang, Alexei V. Filippenko, Ryan J. Foley, Saurabh Jha, Anton M. Koekemoer, Masamune Oguri, Ismael Perez-Fournon, Justin Pierel, Frederick Poidevin, Lou Strolger   +19 more
doaj   +1 more source

The Chemical Evolution of the Galaxy [PDF]

Symposium - International Astronomical Union, 1985
Over the last few years, our picture of the chemical evolution of the Galaxy has changed substantially. These changes are of interest because chemical evolution provides a common point of contact for most astrophysical processes of importance to galaxy evolution.
openaire   +1 more source