Results 81 to 90 of about 2,171 (133)

Chemodynamical Model of the Galaxy: Abundance Gradients Predicted for HiiRegions and Planetary Nebulae [PDF]

, 1998
Christine Allen, Leticia Carigi, M. Peimbert   +2 more
openalex   +1 more source

Abundances of Red Giants in the Andromeda II Dwarf Spheroidal Galaxy [PDF]

, 1999
Patrick Côté, J. B. Oke, Judith G. Cohen   +2 more
openalex   +1 more source

Figuring Out Gas and Galaxies In Enzo (FOGGIE). VIII. Complex and Stochastic Metallicity Gradients at z > 2

The Astrophysical Journal
Gas-phase metallicity gradients are a crucial element in understanding the chemical evolution of galaxies. We use the FOGGIE simulations to study the metallicity gradients (∇ Z ) of six Milky Way–like galaxies throughout their evolution.
Ayan Acharyya, Molly S. Peeples, Jason Tumlinson, Brian W. O’Shea, Cassandra Lochhaas, Anna C. Wright, Raymond C. Simons, Ramona Augustin, Britton D. Smith, Eugene Hyeonmin Lee   +9 more
doaj   +1 more source

Chemical Abundances of Planetary Nebulae in the Sagittarius Dwarf Elliptical Galaxy [PDF]

, 1997
J. R. Walsh, G. Dudziak, D. Minniti, A. A. Zijlstra   +3 more
openalex   +1 more source

Two-process Model and Residual Abundance Analysis of the Milky Way Massive Satellites

The Astrophysical Journal
The “two-process model” is a promising technique for interpreting stellar chemical abundance data from large-scale surveys (e.g., the Sloan Digital Sky Survey IV/V and the Galactic Archeology with HERMES survey), enabling more quantitative empirical ...
Sten Hasselquist, Christian R. Hayes, Emily J. Griffith, David Weinberg, Tawny Sit, Rachael L. Beaton, Danny Horta   +6 more
doaj   +1 more source

Theoretical models of the planetary nebula populations in galaxies: The ISM oxygen abundance when star formation stops [PDF]

, 1997
M. G. Richer, M. L. McCall, N. Arimoto
openalex   +1 more source

Oxygen Abundances in Diffuse Ellipticals and the Metallicity-Luminosity Relation for Dwarf Galaxies [PDF]

, 1996
M. G. Richer, M. L. McCall, N. Arimoto
openalex   +1 more source

On the Evolutionary History of a Simulated Disk Galaxy as Seen by Phylogenetic Trees

The Astrophysical Journal
Phylogenetic methods have long been used in biology and more recently have been extended to other fields—for example, linguistics and technology—to study evolutionary histories.
Danielle de Brito Silva, Paula Jofré, Patricia B. Tissera, Keaghan J. Yaxley, Jenny Gonzalez Jara, Camilla J. L. Eldridge, Emanuel Sillero, Robert M. Yates, Xia Hua, Payel Das, Claudia Aguilera-Gómez, Evelyn J. Johnston, Alvaro Rojas-Arriagada, Robert Foley, Gerard Gilmore   +14 more
doaj   +1 more source

Lack of Evolution in the Iron Abundance in Clusters of Galaxies and Implications for the Global Star Formation Rate at High Redshift [PDF]

, 1997
R. F. Mushotzky, M. Loewenstein
openalex   +1 more source

Abundance gradients in the Galaxy derived from H II regions

, 1978
M. Peimbert, J. F. Rayo, S. Torres‐Peimbert   +2 more
openalex   +1 more source