The clustering of Lyman Alpha Emitting galaxies at z=2-3
arxiv(2024)
Abstract
We measure the clustering of Lyman Alpha Emitting galaxies (LAEs) selected
from the One-hundred-square-degree DECam Imaging in Narrowbands (ODIN) survey,
with spectroscopic follow-up from Dark Energy Spectroscopic Instrument (DESI).
We use DESI spectroscopy to optimize our selection and to constrain the
interloper fraction and redshift distribution of our narrow-band selected
sources. We select samples at z=2.45 and 3.1 in the COSMOS field with median
Ly-alpha fluxes of 10^-16erg/s/cm2. Covariances and cosmological inferences
are obtained from a series of mock catalogs built upon high-resolution N-body
simulations that match the footprint, number density, redshift distribution and
observed clustering of the sample. We find that both samples have a correlation
length of r_0=3.0+/-0.2 Mpc/h. Within our fiducial cosmology these correspond
to 3D number densities of 10^-3h3/Mpc3 and, from our mock catalogs, biases of
1.7 and 2.0 at z=2.45 and 3.1, respectively. We discuss the implications of
these measurements for the use of LAEs as large-scale structure tracers for
high-redshift cosmology.
MoreTranslated text
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined