- Carnegie Institution for ScienceUS2.7k papers
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25 papers · 2 filters
Multi-Element Abundance Measurements from Medium-Resolution Spectra. II. Catalog of Stars in Milky Way Dwarf Satellite Galaxies
Evan N. Kirby, Puragra Guhathakurta, Joshua D. Simon +7
We present a catalog of Fe, Mg, Si, Ca, and Ti abundances for 2961 red giant stars that are likely members of eight dwarf satellite galaxies of the Milky Way (MW): Sculptor, Fornax…
Mid-Infrared Spectral Diagnostics of Luminous Infrared Galaxies
A. O. Petric, L. Armus, J. Howell +22
We present a statistical analysis of the mid-infrared (MIR) spectra of 248 luminous infrared (IR) galaxies (LIRGs) which comprise the Great Observatories All-sky LIRG Survey (GOALS…
Accurate dynamical mass determination of a classical Cepheid in an eclipsing binary system
G. Pietrzynski, I. B. Thompson, W. Gieren +5
Stellar pulsation theory provides a means of determining the masses of pulsating classical Cepheid supergiant - it is the pulsation that causes their luminosity to vary. Such pulsa…
Galactic chemical evolution: the observational side
Andrew McWilliam
In this review I outline some ideas in chemical evolution, necessary for understanding the evolution of galaxies from measured elemental abundance ratios. I then discuss abundance…
Multi-Element Abundance Measurements from Medium-Resolution Spectra. III. Metallicity Distributions of Milky Way Dwarf Satellite Galaxies
Evan N. Kirby, Gustavo A. Lanfranchi, Joshua D. Simon +2
We present metallicity distribution functions (MDFs) for the central regions of eight dwarf satellite galaxies of the Milky Way: Fornax, Leo I and II, Sculptor, Sextans, Draco, Can…
High star formation rates as the origin of turbulence in early and modern disk galaxies
Andrew W. Green, Karl Glazebrook, Peter J. McGregor +6
High spatial and spectral resolution observations of star formation and kinematics in early galaxies have shown that two-thirds are massive rotating disk galaxies with the remainde…