UVES observations of QSO 0000-2620: Argon and Phosphorus abundances in the dust-free damped Ly-alpha system at zabs = 3.3901

Abstract

The UV resonance transitions of neutral argon ArI 1066 A, and of singly ionized phosphorus PII 963 A, originated in the damped Ly_alpha system (DLA) at zabs = 3.3901 towards QSO 0000--2620 have been detected by means of the UVES spectrograph at the 8.2m ESO KUEYEN telescope. So far, this is the first measurement of ArI, and the second of PII, ever performed in damped galaxies and in high redshift objects. This DLA is well known for having one of the lowest metal abundances and dust content, and the lowest fractional abundance of molecular hydrogen H_2. The measured Ar abundance is [Ar/H] = - 1.91 (+/- 0.09) which is equal to the abundances of the other alpha-chain elements (O, S and Si). The similarity of the Ar abundance with the other alpha-chain elements implies the absence of significant photoionization by either UV background or stellar sources along the sightline throughout the damped Ly_alpha system. Both log(Ar/O) and log(Ar/S) ratios are found close to those measured in the extragalactic HII regions and in blue compact galaxies where O is more abundant by at least one order of magnitude. This strengthens the universality of the Ar/O and Ar/S ratios and lends support to the existence of a universal IMF. The abundance of the non-refractory element phosphorus [P/H] = - 2.31 (+/- 0.10) confirms the low amount of chemical evolution in the DLA. This is the measurement of P in the most metal-poor material and shows a subsolar [P/Fe] = --0.27 value. The measured ratios [P/Si] = - 0.40 (+/- 0.13) and [P/S] = - 0.33 (+/- 0.13) provide evidence for a mild odd-even effect. Finally, a stringent upper limit to the population of the 3P_1 level in the ground state of OI is derived, which provides a lower limit to the physical dimensions of the zabs = 3.3901 system of L > 7 pc.

arXiv commentAccepted ApJ

References in corpus (23)

• Galactic Chemical Evolution: Hydrogen Through Zinc
• Heavy element abundances in blue compact galaxies
• The Galactic Thick Disk Stellar Abundances
• Abundances at High Redshifts: the Chemical Enrichment History of Damped Lyman-alpha Galaxies
• The Distribution Of Heavy Elements In Spiral And Elliptical Galaxies
• Nucleosynthesis in Type Ia Supernovae
• The Metallicity of High Redshift Galaxies: The Abundance of Zinc in 34 Damped Lyman Alpha Systems from z = 0.7 to 3.4
• Oxygen abundances in unevolved metal-poor stars from near-UV OH lines
• Metal Abundances at z < 1.5: Fresh Clues to the Chemical Enrichment History of Damped Lyman alpha Systems
• Chemical Abundances of the Damped Lya Systems at z>1.5
• Massive Stars in the Range $13-25{\mathrm{M}}_{\odot }$: Evolution and Nucleosynthesis. II. the Solar Metallicity Models
• Si and Mn Abundances in Damped Lya Systems with Low Dust Content
• IMAPS Observations of Interstellar Neutral Argon and the Implications for Partially Ionized Gas
• Dust and elemental abundances in Damped Ly alpha absorbers
• Metallicity Evolution in the Early Universe
• Newly Synthesized Elements and Pristine Dust in the Cassiopeia A Supernova Remnant
• UVES observations of QSO 0000-2620: oxygen and zinc abundances in the Damped Ly-alpha galaxy at z_abs=3.3901
• Empirical Verification of the Fe II Oscillator Strengths in the FUSE Bandpass
• Chemical Evolution of Damped Ly alpha galaxies: The [S/Zn] abundance ratio at redshift z > 2
• Abundance Patterns of Heavy Elements in Damped Lyman-Alpha Galaxies
• The Lyman-alpha Forest and Heavy Element Systems of GB1759+7539
• Zinc as a tracer of metallicity evolution of Damped Lyman alpha systems
• Chemical abundances in the young galaxy at z=2.309 towards PHL 957

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