The First Detection of Cobalt in a Damped Lyman Alpha System

Abstract

We present the first ever detection of Cobalt in a Damped Lyman Alpha system (DLA) at z = 1.92. In addition to providing important clues to the star formation history of these high redshift galaxies, we discuss how studying the Co abundance in DLAs may also help to constrain models of stellar nucleosynthesis in a regime not probed by Galactic stars.

4 pages, to appear in the proceedings of `New Quests in Stellar Astrophysics: The Link Between Stars and Cosmology', eds. M. Chavez, A. Bressan, A. Buzzoni, D. Mayya

References in corpus (2)

• A Search for the Damped Ly-alpha Absorber at z=1.86 toward QSO 1244+3443 with NICMOS
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• A Homogeneous Sample of Sub-DLAs I: Construction of the Sample and Chemical Abundance Measurements
• The spin temperature of high-redshift damped Lyman-$\alpha$ systems
• A new comprehensive set of elemental abundances in DLAs - II. Data analysis and chemical variation studies
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• VLT/UVES observations of extremely strong intervening damped Lyman-alpha systems: Molecular hydrogen and excited carbon, oxygen and silicon at log N(HI)=22.4
• Metal abundances at z<1.5: new measurements in sub-Damped Lyman-alpha Absorbers
• Elemental Abundances in Two High Column Density Damped Lyman Alpha Systems at z < 1.5
• The Absorption and Emission Kinematics in the z=0.7450 Mg II Absorber Towards Q1331+17
• HI content, metallicities and spin temperatures of damped and sub-damped Lyman alpha systems in the redshift desert (0.6 < z < 1.7)
• Dielectronic Recombination of Argon-Like Ions
• Metallicities and dust content of proximate damped Lyman alpha systems in the Sloan Digital Sky Survey
• Sub-damped Lyman alpha systems in the XQ-100 survey I -- Identification and contribution to the cosmological HI budget
• The most metal-rich damped Lyman alpha systems at z>1.5 I: The Data
• Sensitivity of the energy levels of singly ionized cobalt to the variation of the fine structure constant
• The First Detection of Co in a Damped Lyman Alpha System