The elemental abundance pattern in a galaxy at z = 2.626

@article{Prochaska2003TheEA,
  title={The elemental abundance pattern in a galaxy at z = 2.626},
  author={Jason Xavier Prochaska and J. Christopher Howk and Arthur M. Wolfe},
  journal={Nature},
  year={2003},
  volume={423},
  pages={57-59}
}
The discovery of metal-poor stars (where metal is any element more massive than helium) has enabled astronomers to probe the chemical enrichment history of the Milky Way. More recently, element abundances in gas inside high-redshift galaxies has been probed through the absorption lines imprinted on the spectra of background quasars, but these have typically yielded measurements of only a few elements. Furthermore, interpretation of these abundances is complicated by the fact that differential… Expand
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References

SHOWING 1-10 OF 41 REFERENCES
Abundances at High Redshifts: The Chemical Enrichment History of Damped Lyα Galaxies
We study the elemental abundances of C, N, O, Al, Si, S, Cr, Mn, Fe, Ni, and Zn in a sample of 14 damped Lyα systems (galaxies) with H I column density N(H I) ≥ 1020 cm−2, using high-quality spectraExpand
The Stellar Population Histories of Local Early-Type Galaxies. I. Population Parameters
This paper commences a series of investigations into the stellar populations of local elliptical galaxies as determined from their integrated spectra. The goal of the series is to determine the starExpand
The Revival of Galactic Cosmic-Ray Nucleosynthesis?
Because of the roughly linear correlation between Be/H and Fe/H in low-metallicity halo stars, it has been argued that a primary component in the nucleosynthesis of Be must be present in addition toExpand
The Rest-Frame Optical Spectra of Lyman Break Galaxies: Star Formation, Extinction, Abundances, and Kinematics*
We present the first results of a spectroscopic survey of Lyman break galaxies (LBGs) in the near-infrared aimed at detecting the emission lines of [O II], [O III], and Hβ from the H II regions ofExpand
The Ultraviolet Spectrum of MS 1512–cB58: An Insight into Lyman-Break Galaxies*
We present an intermediate-resolution, high signal-to-noise ratio spectrum of the z = 2.7268 galaxy MS 1512-cB58 obtained with the Low Resolution Imaging Spectrograph (LRIS) on the Keck I telescopeExpand
INTERSTELLAR ABUNDANCES FROM ABSORPTION-LINE OBSERVATIONS WITH THE HUBBLE SPACE TELESCOPE
▪ Abstract The Goddard High-Resolution Spectrograph (GHRS) aboard the Hubble Space Telescope (HST) has yielded precision abundance results for a range of interstellar environments, including gas inExpand
Chemical abundances of Damped Ly α Systems : A new method for estimating dust depletion effects
A new method is presented for recovering the abundances of Damped Ly α systems (DLAs) taking into account the effects of dust depletion. For the first time, possible variations of the chemicalExpand
Production and evolution of light elements in active star-forming regions
TLDR
It is shown that the two-body interactions of the ejected carbon and oxygen nuclei (and the α-particles ejected with them) with the hydrogen and helium in the surrounding gas offer a way to make lithium, beryllium and boron that is independent of the abundance of heavy elements in the surrounds medium. Expand
Si and Mn Abundances in Damped Lyα Systems with Low Dust Content
We have measured the abundances of Zn, Si, Mn, Cr, Fe, and Ni in three damped Lyα systems at redshifts zabs ≤ 1 from high-resolution echelle spectra of QSOs recorded with the Keck I telescope. In allExpand
C II* Absorption in Damped Lyα Systems. II. A New Window on the Star Formation History of the Universe
Starting from the star formation rate (SFR) per unit area, , determined for damped Lyα systems (DLAs) using the C II* method, we obtain the SFR per unit comoving volume, (z), at z ≈ 3. Pure warmExpand
...
1
2
3
4
5
...