The ESO UVES Advanced Data Products quasar sample: neutral gas mass and metal abundances in the Universe

Tayyaba Zafar; Céline Péroux; Giovanni Vladilo; Mariam Centurión; Valentina D'Ordorico; Kumail Abbas; Attila Popping; Bruno Milliard; Jean-Michel Deharveng; Stephan Frank

The ESO UVES Advanced Data Products quasar sample: neutral gas mass and metal abundances in the Universe

Tayyaba Zafar, Céline Péroux, Giovanni Vladilo, Mariam Centurión, Valentina D'Ordorico, Kumail Abbas, Attila Popping, Bruno Milliard, Jean-Michel Deharveng, Stephan Frank

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Abstract

Damped LyÎ± absorbers (DLAs), seen in the spectra of background quasars, are unique probes to select HI-rich galaxies. We selected a dataset of 250 quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) and available through the ESO UVES Advanced Data Products (EUADP) archive, to study the gas and metal properties of 150 damped absorbers. These high-redshift absorbers contain information on the physical state and chemical composition of the interstellar medium and the neutral gas mass, a possible indicator of gas consumption as star formation proceeds. We find no evolution of the neutral gas mass density, with sub-DLAs contributing 8-20% (increasing with redshift). The EUADP dataset provides insights into the nucleosynthetic origin of nitrogen, confirming the bimodal behaviour of [N/Î±], and also confirms the deficiency of argon in DLAs.

Original language	English
Pages (from-to)	23-26
Number of pages	4
Journal	The Messenger
Issue number	160
Publication status	Published - 2015
Externally published	Yes

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https://www.eso.org/sci/publications/messenger/archive/no.160-jun15/messenger-no160-23-26.pdf

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Zafar, T., Péroux, C., Vladilo, G., Centurión, M., D'Ordorico, V., Abbas, K., Popping, A., Milliard, B., Deharveng, J.-M., & Frank, S. (2015). The ESO UVES Advanced Data Products quasar sample: neutral gas mass and metal abundances in the Universe. The Messenger, (160), 23-26. https://www.eso.org/sci/publications/messenger/archive/no.160-jun15/messenger-no160-23-26.pdf

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title = "The ESO UVES Advanced Data Products quasar sample: neutral gas mass and metal abundances in the Universe",

abstract = "Damped Ly{\^I}± absorbers (DLAs), seen in the spectra of background quasars, are unique probes to select HI-rich galaxies. We selected a dataset of 250 quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) and available through the ESO UVES Advanced Data Products (EUADP) archive, to study the gas and metal properties of 150 damped absorbers. These high-redshift absorbers contain information on the physical state and chemical composition of the interstellar medium and the neutral gas mass, a possible indicator of gas consumption as star formation proceeds. We find no evolution of the neutral gas mass density, with sub-DLAs contributing 8-20% (increasing with redshift). The EUADP dataset provides insights into the nucleosynthetic origin of nitrogen, confirming the bimodal behaviour of [N/{\^I}±], and also confirms the deficiency of argon in DLAs.",

author = "Tayyaba Zafar and C{\'e}line P{\'e}roux and Giovanni Vladilo and Mariam Centuri{\'o}n and Valentina D'Ordorico and Kumail Abbas and Attila Popping and Bruno Milliard and Jean-Michel Deharveng and Stephan Frank",

year = "2015",

language = "English",

pages = "23--26",

journal = "The Messenger",

issn = "0722-6691",

publisher = "European Southern Observatory",

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TY - JOUR

T1 - The ESO UVES Advanced Data Products quasar sample

T2 - neutral gas mass and metal abundances in the Universe

AU - Zafar, Tayyaba

AU - Péroux, Céline

AU - Vladilo, Giovanni

AU - Centurión, Mariam

AU - D'Ordorico, Valentina

AU - Abbas, Kumail

AU - Popping, Attila

AU - Milliard, Bruno

AU - Deharveng, Jean-Michel

AU - Frank, Stephan

PY - 2015

Y1 - 2015

N2 - Damped LyÎ± absorbers (DLAs), seen in the spectra of background quasars, are unique probes to select HI-rich galaxies. We selected a dataset of 250 quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) and available through the ESO UVES Advanced Data Products (EUADP) archive, to study the gas and metal properties of 150 damped absorbers. These high-redshift absorbers contain information on the physical state and chemical composition of the interstellar medium and the neutral gas mass, a possible indicator of gas consumption as star formation proceeds. We find no evolution of the neutral gas mass density, with sub-DLAs contributing 8-20% (increasing with redshift). The EUADP dataset provides insights into the nucleosynthetic origin of nitrogen, confirming the bimodal behaviour of [N/Î±], and also confirms the deficiency of argon in DLAs.

AB - Damped LyÎ± absorbers (DLAs), seen in the spectra of background quasars, are unique probes to select HI-rich galaxies. We selected a dataset of 250 quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) and available through the ESO UVES Advanced Data Products (EUADP) archive, to study the gas and metal properties of 150 damped absorbers. These high-redshift absorbers contain information on the physical state and chemical composition of the interstellar medium and the neutral gas mass, a possible indicator of gas consumption as star formation proceeds. We find no evolution of the neutral gas mass density, with sub-DLAs contributing 8-20% (increasing with redshift). The EUADP dataset provides insights into the nucleosynthetic origin of nitrogen, confirming the bimodal behaviour of [N/Î±], and also confirms the deficiency of argon in DLAs.

M3 - Article

SN - 0722-6691

SP - 23

EP - 26

JO - The Messenger

JF - The Messenger

IS - 160

ER -

The ESO UVES Advanced Data Products quasar sample: neutral gas mass and metal abundances in the Universe

Abstract

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