Results 101 to 110 of about 58,212 (235)

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

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

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

, 2000
Ignacio Ferreras, Joseph Silk
openalex   +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

The Influence of Nova Nucleosynthesis on the Chemical Evolution of the Galaxy [PDF]

, 2000
D. Romano, F. Matteuccí
openalex   +1 more source

A North–South Metallicity Asymmetry in the Outer Galactic Disk—Evidence for the Pericentric Passage of the Sagittarius Dwarf Galaxy

The Astrophysical Journal Letters
We present maps of the mean metallicity distributions on the Galactocentric R – Z plane at different azimuthal angles using red clump stars selected from the LAMOST and APOGEE surveys.
Chun Wang, Yang Huang, Timothy C. Beers, Payel Das, Haibo Yuan, Lizhi Xie, Shi Shao   +6 more
doaj   +1 more source

Chemical Evolution of Galaxies and Quasar Metallicities

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

Evidence of Truly Young High-α Dwarf Stars

The Astronomical Journal
The existence of high- α stars with inferred ages
Yuxi(Lucy) Lu, Isabel L. Colman, Maryum Sayeed, Louis Amard, Sven Buder, Catherine Manea, Soichiro Hattori, Marc H. Pinsonneault, Adrian M. Price-Whelan, Megan Bedell, David Nidever, Jennifer A. Johnson, Melissa Ness, Ruth Angus, Zachary R. Claytor, Danny Horta, Aida Behmard   +16 more
doaj   +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

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