Results 101 to 110 of about 210,874 (237)

Chemical Evolution of Galaxies: Abundance Trends and Implications [PDF]

, 1991
James W. Truran
openalex   +1 more source

Determining Stellar Elemental Abundances from DESI Spectra with the Data-driven Payne

The Astrophysical Journal Supplement Series
Stellar abundances for a large number of stars provide key information for the study of Galactic formation history. Large spectroscopic surveys such as the Dark Energy Spectroscopic Instrument (DESI) and LAMOST take median-to-low-resolution ( R ≲ 5000 ...
Meng Zhang, Maosheng Xiang, Yuan-Sen Ting, Jiahui Wang, Haining Li, Hu Zou, Jundan Nie, Lanya Mou, Tianmin Wu, Yaqian Wu, Jifeng Liu   +10 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

A Photoionization Model for the Infrared Coronal Line Emission in the Classical Nova V1716 Scorpii

The Astrophysical Journal
A near-infrared spectrum of nova V1716 Scorpii (PNV J17224490-4137160), a recent bright ( ${V}_{\max }=7.3$ mag), Fermi-LAT detected γ -ray source, was modeled using the photoionization code CLOUDY.
C. E. Woodward, G. Shaw, S. Starrfield, A. Evans, K. L. Page   +4 more
doaj   +1 more source

CHEMTAX - a program for estimating class abundances from chemical markers:application to HPLC measurements of phytoplankton [PDF]

, 1996
M.D. Mackey, DJ Mackey, HW Higgins, SW Wright   +3 more
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Chemical abundances and ionizing clusters of H ii regions in the LINER galaxy NGC 4258 [PDF]

, 2000
Á. I. Díaz, M. Castellanos, R. Terlevich, M. L. García-Vargas   +3 more
openalex   +2 more sources

Metal Abundances at [FORMULA][F]z<1.5[/F][/FORMULA]: Fresh Clues to the Chemical Enrichment History of Damped [CLC]Ly[/CLC]α Systems [PDF]

, 1999
Max Pettini, Sara L. Ellison, Charles C. Steidel, David V. Bowen   +3 more
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Chemical Abundance Calibrations for the Narrow-Line Region of Active Galaxies [PDF]

, 1998
Thaisa Storchi‐Bergmann, H. R. Schmitt, Daniela Calzetti, Anne L. Kinney   +3 more
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Stellar Abundances at the Center of Early-type Galaxies with Fine Structure

The Astrophysical Journal
Our understanding of early-type galaxies (ETGs) has grown in the past decade with the advance of full-spectrum fitting techniques used to infer the properties of the stellar populations that make up the galaxy.
Nicholas Barth, George C. Privon, Rana Ezzeddine, Aaron S. Evans, Ezequiel Treister   +4 more
doaj   +1 more source

On the Chemical Abundances of Multiple‐Shell Planetary Nebulae with Halos [PDF]

, 1999
M. A. Guerrero, A. Manchado
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