Chemical Evolution from Zero to High Redshift

  title={Chemical Evolution from Zero to High Redshift},
  author={Jeremy R. Walsh and Michael R. Rosa},

PhD thesis: On the diversity of O vi absorbers at high redshift

In this thesis, we systematically analyze the properties of intergalactic \Ovi absorbing gas structures at high redshift using optical spectra with intermediate ($\sim 6.6$ \kms FWHM) and high ($\sim

Erratum: “Constraints on the Origin of Manganese from the Composition of the Sagittarius Dwarf Spheroidal Galaxy and the Galactic Bulge” (ApJ, 592, L21 [2003])

The trend of [Mn/Fe] in the Galactic bulge follows the solar-neighborhood relation, but most stars in the Sagittarius dwarf spheroidal galaxy show [Mn/Fe] deficient by approximately 0.2 dex. This

A Census of Metals at High and Low Redshift and the Connection Between Submillimetre Sources and Spheroid Formation

Deep surveys in many wavebands have shown that the rate at which stars were forming was at least a factor of 10 higher at redshifts >1 than today. Heavy elements (‘metals’) are produced by stars, and

The Dust Opacity of Star‐forming Galaxies

The presence of dust in galaxies removes one‐half or more of the stellar energy from the UV‐optical budget of the universe and has a profound impact on our understanding of how galaxies evolve.

Early Chemical Evolution of Galaxies

Initial conditions are set by Big bang nucleosynthesis from which we know that 90 per cent of baryons are dark and have essentially unknown chemical composition. In our own Galaxy, there are many

The most metal-poor galaxies

Summary. Metallicity is a key parameter that controls many aspects in the formation and evolution of stars and galaxies. In this review we focus on the metal deficient galaxies, in particular the

A grid of chemical evolution models as a tool to interpret spiral and irregular galaxies data

We present a generalization of the multiphase chemical evolution model applied to a wide set of theoretical galaxies with di ff erent masses and evolutionary rates. This general-ized set of models has

Oxygen Abundances in Metal-poor Stars

We present oxygen abundances derived from both the permitted and forbidden oxygen lines for 55 subgiants and giants with [Fe/H] values between -2.7 and solar with the goal of understanding the

New Observations of the Interstellar Medium in the Lyman Break Galaxy MS 1512–cB58

We present the results of a detailed study of the interstellar medium (ISM) of MS 1512-cB58 (cB58 for short), an ~L* Lyman break galaxy at z = 2.7276, based on new spectral observations obtained with

The Implications of the New Z = 0 Stellar Models and Yields on the Early Metal Pollution of the Intergalactic Medium

Motivated by the recent detection of metals in different components of the high-redshift universe and by the abundance ratios measured in the extremely metal-poor stars of our Galaxy, we study the