We report the detection of the most luminous high-redshift Lyman Alpha
Emitting galaxy (LAE) yet seen, with log L(Ly alpha) = 43.9 ergs/s. The galaxy
-- COSMOS Lyman alpha 1, or COLA1 -- was detected in a search for
ultra-luminous LAEs with Hyper Suprime-Cam on the Subaru telescope. It was
confirmed to lie at z = 6.593 based on a Lyman alpha line detection obtained
from followup spectroscopy with the DEIMOS spectrograph on Keck2. COLA1 is the
first very high-redshift LAE to show a multi-component Lyman alpha line profile
with a blue wing, which suggests that it could lie in a highly ionized region
of the intergalactic medium and could have significant infall. If this
interpretation is correct, then ultra-luminous LAEs like COLA1 offer a unique
opportunity to determine the properties of the HII regions around these
galaxies which will help in understanding the ionization of the z ~ 7
intergalactic medium.
Description
[1606.03526] An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6
%0 Generic
%1 hu2016ultraluminous
%A Hu, E. M.
%A Cowie, L. L.
%A Songaila, A.
%A Barger, A. J.
%A Rosenwasser, B.
%A Wold, I.
%D 2016
%K emitters high-z infall lya outflows
%T An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6
%U http://arxiv.org/abs/1606.03526
%X We report the detection of the most luminous high-redshift Lyman Alpha
Emitting galaxy (LAE) yet seen, with log L(Ly alpha) = 43.9 ergs/s. The galaxy
-- COSMOS Lyman alpha 1, or COLA1 -- was detected in a search for
ultra-luminous LAEs with Hyper Suprime-Cam on the Subaru telescope. It was
confirmed to lie at z = 6.593 based on a Lyman alpha line detection obtained
from followup spectroscopy with the DEIMOS spectrograph on Keck2. COLA1 is the
first very high-redshift LAE to show a multi-component Lyman alpha line profile
with a blue wing, which suggests that it could lie in a highly ionized region
of the intergalactic medium and could have significant infall. If this
interpretation is correct, then ultra-luminous LAEs like COLA1 offer a unique
opportunity to determine the properties of the HII regions around these
galaxies which will help in understanding the ionization of the z ~ 7
intergalactic medium.
@misc{hu2016ultraluminous,
abstract = {We report the detection of the most luminous high-redshift Lyman Alpha
Emitting galaxy (LAE) yet seen, with log L(Ly alpha) = 43.9 ergs/s. The galaxy
-- COSMOS Lyman alpha 1, or COLA1 -- was detected in a search for
ultra-luminous LAEs with Hyper Suprime-Cam on the Subaru telescope. It was
confirmed to lie at z = 6.593 based on a Lyman alpha line detection obtained
from followup spectroscopy with the DEIMOS spectrograph on Keck2. COLA1 is the
first very high-redshift LAE to show a multi-component Lyman alpha line profile
with a blue wing, which suggests that it could lie in a highly ionized region
of the intergalactic medium and could have significant infall. If this
interpretation is correct, then ultra-luminous LAEs like COLA1 offer a unique
opportunity to determine the properties of the HII regions around these
galaxies which will help in understanding the ionization of the z ~ 7
intergalactic medium.},
added-at = {2016-06-14T09:49:17.000+0200},
author = {Hu, E. M. and Cowie, L. L. and Songaila, A. and Barger, A. J. and Rosenwasser, B. and Wold, I.},
biburl = {https://www.bibsonomy.org/bibtex/274b904fed5400f74a16683c8ae4722ed/miki},
description = {[1606.03526] An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6},
interhash = {8a0462e1ac8e0bcf8db92fd1b797beb5},
intrahash = {74b904fed5400f74a16683c8ae4722ed},
keywords = {emitters high-z infall lya outflows},
note = {cite arxiv:1606.03526Comment: 6 pages, 4 figures, 1 table, accepted for publication in ApJ Letters},
timestamp = {2016-06-14T09:49:17.000+0200},
title = {An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6},
url = {http://arxiv.org/abs/1606.03526},
year = 2016
}