Using a sample of 100 H I - selected damped Lyman alpha (DLA) systems,
observed with the High Resolution Echelle Spectrometer on the Keck I telescope,
we present evidence that the scatter in the well-studied correlation between
the redshift and metallicity of a DLA is largely due to the existence of a
mass-metallicity relationship at each redshift. To describe the fundamental
relations that exist between redshift, metallicity and mass, we use a
fundamental plane description, which is described by the following equation:
M/H=(-1.9+-0.5)+(0.74+-0.21)logdv_90-(0.32+-0.06)z. Here, we assert that the
velocity width, dv_90, which is defined as the velocity interval containing 90%
of the integrated optical depth, traces the mass of the underlying dark matter
halo. This description provides two significant improvements over the
individual descriptions of the mass-metallicity correlation and
metallicity-redshift correlation. Firstly, the fundamental equation reduces the
scatter around both relationships by about 20%, providing a more stringent
constraint on numerical simulations modeling DLAs. Secondly, it confirms that
the dark matter halos that host DLAs satisfy a mass-metallicity relationship at
each redshift between redshifts 2 through 5.
Beschreibung
[1303.7239] The Fundamental Plane of Damped Lyman Alpha Systems
%0 Generic
%1 neeleman2013fundamental
%A Neeleman, Marcel
%A Wolfe, Arthur M.
%A Prochaska, J. Xavier
%A Rafelski, Marc
%D 2013
%K dla fundamental mass metallicity plane redshift
%T The Fundamental Plane of Damped Lyman Alpha Systems
%U http://arxiv.org/abs/1303.7239
%X Using a sample of 100 H I - selected damped Lyman alpha (DLA) systems,
observed with the High Resolution Echelle Spectrometer on the Keck I telescope,
we present evidence that the scatter in the well-studied correlation between
the redshift and metallicity of a DLA is largely due to the existence of a
mass-metallicity relationship at each redshift. To describe the fundamental
relations that exist between redshift, metallicity and mass, we use a
fundamental plane description, which is described by the following equation:
M/H=(-1.9+-0.5)+(0.74+-0.21)logdv_90-(0.32+-0.06)z. Here, we assert that the
velocity width, dv_90, which is defined as the velocity interval containing 90%
of the integrated optical depth, traces the mass of the underlying dark matter
halo. This description provides two significant improvements over the
individual descriptions of the mass-metallicity correlation and
metallicity-redshift correlation. Firstly, the fundamental equation reduces the
scatter around both relationships by about 20%, providing a more stringent
constraint on numerical simulations modeling DLAs. Secondly, it confirms that
the dark matter halos that host DLAs satisfy a mass-metallicity relationship at
each redshift between redshifts 2 through 5.
@misc{neeleman2013fundamental,
abstract = {Using a sample of 100 H I - selected damped Lyman alpha (DLA) systems,
observed with the High Resolution Echelle Spectrometer on the Keck I telescope,
we present evidence that the scatter in the well-studied correlation between
the redshift and metallicity of a DLA is largely due to the existence of a
mass-metallicity relationship at each redshift. To describe the fundamental
relations that exist between redshift, metallicity and mass, we use a
fundamental plane description, which is described by the following equation:
[M/H]=(-1.9+-0.5)+(0.74+-0.21)logdv_90-(0.32+-0.06)z. Here, we assert that the
velocity width, dv_90, which is defined as the velocity interval containing 90%
of the integrated optical depth, traces the mass of the underlying dark matter
halo. This description provides two significant improvements over the
individual descriptions of the mass-metallicity correlation and
metallicity-redshift correlation. Firstly, the fundamental equation reduces the
scatter around both relationships by about 20%, providing a more stringent
constraint on numerical simulations modeling DLAs. Secondly, it confirms that
the dark matter halos that host DLAs satisfy a mass-metallicity relationship at
each redshift between redshifts 2 through 5.},
added-at = {2013-04-01T17:04:06.000+0200},
author = {Neeleman, Marcel and Wolfe, Arthur M. and Prochaska, J. Xavier and Rafelski, Marc},
biburl = {https://www.bibsonomy.org/bibtex/2097997fa7035a30f69da4cce7e8d009e/miki},
description = {[1303.7239] The Fundamental Plane of Damped Lyman Alpha Systems},
interhash = {5e28855a879b6e46d3830bb32c35a8b1},
intrahash = {097997fa7035a30f69da4cce7e8d009e},
keywords = {dla fundamental mass metallicity plane redshift},
note = {cite arxiv:1303.7239Comment: 18 pages with 10 figures, Submitted to ApJ},
timestamp = {2013-04-01T17:04:06.000+0200},
title = {The Fundamental Plane of Damped Lyman Alpha Systems},
url = {http://arxiv.org/abs/1303.7239},
year = 2013
}