Results 101 to 110 of about 58,855 (236)

Chemical Evolution of Damped Lyα Galaxies: The [S/Zn] Abundance Ratio at Redshift ≥2 [PDF]

, 2000
Miriam Centurión, P. Bonifacio, P. Molaro, G. Vladilo   +3 more
openalex   +1 more source

On the Significance of the Thick Disks of Disk Galaxies

The Astrophysical Journal Supplement Series
Thick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from a few percent to 100% of the disk mass, depending on the galaxy and the measurement ...
Sukyoung K. Yi, J. K. Jang, Julien Devriendt, Yohan Dubois, San Han, Taysun Kimm, Katarina Kraljic, Minjung Park, Sebastien Peirani, Christophe Pichon, Jinsu Rhee   +10 more
doaj   +1 more source

The Mass Surface Density in the Local Disk and the Chemical Evolution of the Galaxy [PDF]

, 2000
D. Romano, F. Matteuccí, P. Salucci, C. Chiappini   +3 more
openalex   +1 more source

Chemical evolution of irregular galaxies and the primordial He-4 abundance

, 1993
Grant J. Mathews, R. N. Boyd, George M. Fuller   +2 more
openalex   +1 more source

Probing the Evolution of Early‐Type Cluster Galaxies through Chemical Enrichment [PDF]

, 2000
Ignacio Ferreras, Joseph Silk
openalex   +1 more source

Aeos: The Impact of Population III Initial Mass Function and Star-by-star Models in Galaxy Simulations

The Astrophysical Journal
We explore the effect of variations in the Population III initial mass function (IMF) and star-by-star feedback on early galaxy formation and evolution using the A eos simulations. We compare simulations with two different Population III IMFs: M _char  = 
Kaley Brauer, Jennifer Mead, John H. Wise, Greg L. Bryan, Mordecai-Mark Mac Low, Alexander P. Ji, Andrew Emerick, Eric P. Andersson, Anna Frebel, Benoit Côté   +9 more
doaj   +1 more source

Chemical Evolution of Galaxies and Quasar Metallicities

, 1993
F. Matteuccí, P. Padovani
openalex   +1 more source

Many Elements Matter: Detailed Abundance Patterns Reveal Star Formation and Enrichment Differences among Milky Way Structural Components

The Astronomical Journal
Many nucleosynthetic channels create the elements, but two-parameter models characterized by α and Fe nonetheless predict stellar abundances in the Galactic disk to accuracies of 0.02–0.05 dex for most measured elements, near the level of current ...
Emily J. Griffith, David W. Hogg, Sten Hasselquist, James W. Johnson, Adrian Price-Whelan, Tawny Sit, Alexander Stone-Martinez, David H. Weinberg   +7 more
doaj   +1 more source

The Primordial Helium Abundance as Determined from Chemical Evolution of Irregular Galaxies

, 1993
M. J. Balbes, R. N. Boyd, Grant J. Mathews   +2 more
openalex   +1 more source

Some aspects of the chemical evolution of ⁴He in the Galaxy: the He/H radial gradient and the ΔY/ΔZ enrichment ratio [PDF]

, 2000
W. J. Maciel
openalex   +1 more source