Results 101 to 110 of about 954,000 (309)

CHEMICAL ABUNDANCES IN CLUSTERS OF GALAXIES

, 1995
25 pages of uuencoded compressed PostScript. 4 PostScript figures and 4 PostScript tables available from http://www-astro.physics.ox.ac.uk/~bkg/gibson.html Accepted for publication in Astronomy & Astrophysics.
MATTEUCCI, MARIA FRANCESCA, Gibson, B. K.   +1 more
openaire   +3 more sources

Abundance gradients and galaxy formation

The Astrophysical Journal, 1991
A three-dimensional collisionless code is used to simulate the formation of elliptical galaxies with a time scale for star formation comparable to the collapse time. A one-zone chemical evolution scheme is used to compute the evolution of the abundances of several chemical elements.
M. Stiavelli, F. Matteucci
openaire   +1 more source

Metal Abundances of KISS Galaxies. III. Nebular Abundances for Fourteen Galaxies and the Luminosity‐Metallicity Relationship for HiiGalaxies [PDF]

The Astrophysical Journal, 2004
36 pages, 5 figures.
Lee, Janice C., Salzer, John J., Melbourne, Jason   +2 more
openaire   +2 more sources

Generalized Te([O iii])–Te(He i) Discrepancies in Ionized Nebulae: Possible Evidence of Case B Deviations and Temperature Inhomogeneities

The Astrophysical Journal
The physics of recombination lines in the He i singlet system is expected to be relatively simple, supported by accurate atomic models. We examine the intensities of He i singlets λ 3614,  λ 3965,  λ 5016,  λ 6678, and  λ 7281 and the triplet He i λ 5876
J. E. Méndez-Delgado, E. D. Skillman, E. Aver, C. Morisset, C. Esteban, J. García-Rojas, K. Kreckel, N. S. J. Rogers, F. F. Rosales-Ortega, K. Z. Arellano-Córdova, S. R. Flury, E. Reyes-Rodríguez, M. Orte-García, S. Tan   +13 more
doaj   +1 more source

Extraplanar H II Regions in Spiral Galaxies. I. Low-Metallicity Gas Accreting through the Disk-Halo Interface of NGC 4013

, 2018
The interstellar thick disks of galaxies serve as the interface between the thin star-forming disk, where feedback-driven outflows originate, and the distant halo, the repository for accreted gas.
Croxall, Kevin, Howk, J. Christopher, Lehner, Nicolas, Rueff, Katherine M., Savage, Blair D., Wotta, Christopher B.   +5 more
core   +1 more source

Early Results from GLASS-JWST. XXI: Rapid assembly of a galaxy at z=6.23 revealed by its C/O abundance [PDF]

, 2023
Tucker Jones, Ryan L. Sanders, Yuguang Chen, Xin Wang, Takahiro Morishita, Guido Roberts-Borsani, Tommaso Treu, Alan Dressler, E. Merlin, D. Paris, P. Santini, P. Bergamini, Erin Huntzinger, Themiya Nanayakkara, Kristan Boyett, Maruša Bradač, Gabriel Brammer, Antonello Calabrò, Karl Glazebrook, Kathryn Grasha, Sara Mascia, L. Pentericci, Michele Trenti, Benedetta Vulcani   +23 more
openalex   +1 more source

Subaru/HDS Abundances in Three Giant Stars in the Ursa Minor Dwarf Spheroidal Galaxy ∗ [PDF]

, 2004
With the HDS (High Dispersion Spectrograph) on the Subaru Telescope, we obtained high-resolution optical region spectra of three red giant stars (COS 4, COS 82, and COS 347) in the Ursa Minor dwarf spheroidal galaxy.
K. Sadakane, N. Arimoto, C. Ikuta, W. Aoki, P. Jablonka, A. Institute, O. University, Natinal Astronomical Observatory of Japan, O. Paris, Subaru Telescope   +9 more
semanticscholar   +1 more source

An Equilibrium Model of the Galaxy Determined by Element Abundance Gradients

The Astrophysical Journal
We present a method to determine the gravitational potential of the Milky Way from measurements of the locations, velocities, and element abundances of stars in the Galactic disk.
Lawrence M. Widrow, David W. Hogg, Danny Horta, Haochaun Li, Adrian M. Price-Whelan   +4 more
doaj   +1 more source

How galaxies form: Mass assembly from chemical abundances in the era of large surveys

, 2009
The chemical abundances in the atmosphere of a star provide unique information about the gas from which that star formed, and, modulo processes that are not important for the vast majority of stars, such as mass transfer in close binary systems, are ...
Famaey, Johnson, Koch, Martin, Matteucci, Nissen, Rosemary F.G. Wyse, van der Veen, Zoccali, Zoccali   +9 more
core   +1 more source

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source