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Astrophysics

arXiv:astro-ph/9501105 (astro-ph)
[Submitted on 30 Jan 1995]

Title:Element Abundances at High Redshifts: The N/O Ratio at Low Metallicity

Authors:K Lipman (IoA, Cambridge), M Pettini (RGO, Cambridge), R Hunstead (Sydney)
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Abstract: Our knowledge of galactic chemical evolution is currently limited to observations of Milky Way stars and H II regions of nearby galaxies. Damped Lyman~$\alpha$ systems offer a new approach for tracking the evolution of normal galaxies from early epochs to the present day. Here we report the first measurements of nitrogen abundances in galaxies with less than 1/100 of solar metallicity, a range unexplored by previous observations.
Comments: 7 pages, 3 figures. Uuencoded compressed PS file. Also available at this http URL
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/9501105
  (or arXiv:astro-ph/9501105v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/9501105

Submission history

From: Keith Lipman [view email]
[v1] Mon, 30 Jan 1995 14:45:30 UTC (70 KB)
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