We present a morphological study of the 17 lensed Lyman-$\alpha$ emitter
(LAE) galaxies of the Baryon Oscillation Spectroscopic Survey Emission-Line
Lens Survey (BELLS) for the GALaxy-Ly$\alpha$ EmitteR sYstems (BELLS GALLERY)
sample. This analysis combines the magnification effect of strong galaxy-galaxy
lensing with the high resolution of the Hubble Space Telescope ($HST$) to
achieve a physical resolution of $\sim$80 pc for this $2<z<3$ LAE sample,
allowing a detailed characterization of the LAE rest-frame ultraviolet
continuum surface brightness profiles and substructure. We use lens-model
reconstructions of the LAEs to identify and model individual clumps, which we
subsequently use to constrain the parameters of a generative statistical model
of the LAE population. Since the BELLS GALLERY sample is selected primarily on
the basis of Lyman-$\alpha$ emission, the LAEs that we study here are likely to
be directly comparable to those selected in wide-field narrow-band LAE surveys,
in contrast with the lensed LAEs identified in cluster lensing fields. We find
an LAE clumpiness fraction of approximately 88%, significantly higher than
found in previous (non-lensing) studies. We find a well-resolved characteristic
clump half-light radii of $\sim$350 pc, a scale comparable to the largest H II
regions seen in the local universe. This statistical characterization of LAE
surface-brightness profiles will be incorporated into future lensing analyses
using the BELLS GALLERY sample to constrain the incidence of dark-matter
substructure in the foreground lensing galaxies.
Описание
[1708.08854] The BOSS Emission-Line Lens Survey V. Morphology and Substructure of Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY
%0 Generic
%1 cornachione2017emissionline
%A Cornachione, Matthew
%A Bolton, Adam
%A Shu, Yiping
%A Zheng, Zheng
%A Montero-Dorta, Antonio D.
%A Brownstein, Joel R.
%A Oguri, Masamune
%A Kochanek, Christopher S.
%A Mao, Shude
%A Perez-Fournon, Ismael
%A Marques-Chaves, Rui
%A Menard, Brice
%D 2017
%K LAE clumps emission line
%T The BOSS Emission-Line Lens Survey V. Morphology and Substructure of
Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY
%U http://arxiv.org/abs/1708.08854
%X We present a morphological study of the 17 lensed Lyman-$\alpha$ emitter
(LAE) galaxies of the Baryon Oscillation Spectroscopic Survey Emission-Line
Lens Survey (BELLS) for the GALaxy-Ly$\alpha$ EmitteR sYstems (BELLS GALLERY)
sample. This analysis combines the magnification effect of strong galaxy-galaxy
lensing with the high resolution of the Hubble Space Telescope ($HST$) to
achieve a physical resolution of $\sim$80 pc for this $2<z<3$ LAE sample,
allowing a detailed characterization of the LAE rest-frame ultraviolet
continuum surface brightness profiles and substructure. We use lens-model
reconstructions of the LAEs to identify and model individual clumps, which we
subsequently use to constrain the parameters of a generative statistical model
of the LAE population. Since the BELLS GALLERY sample is selected primarily on
the basis of Lyman-$\alpha$ emission, the LAEs that we study here are likely to
be directly comparable to those selected in wide-field narrow-band LAE surveys,
in contrast with the lensed LAEs identified in cluster lensing fields. We find
an LAE clumpiness fraction of approximately 88%, significantly higher than
found in previous (non-lensing) studies. We find a well-resolved characteristic
clump half-light radii of $\sim$350 pc, a scale comparable to the largest H II
regions seen in the local universe. This statistical characterization of LAE
surface-brightness profiles will be incorporated into future lensing analyses
using the BELLS GALLERY sample to constrain the incidence of dark-matter
substructure in the foreground lensing galaxies.
@misc{cornachione2017emissionline,
abstract = {We present a morphological study of the 17 lensed Lyman-$\alpha$ emitter
(LAE) galaxies of the Baryon Oscillation Spectroscopic Survey Emission-Line
Lens Survey (BELLS) for the GALaxy-Ly$\alpha$ EmitteR sYstems (BELLS GALLERY)
sample. This analysis combines the magnification effect of strong galaxy-galaxy
lensing with the high resolution of the Hubble Space Telescope ($HST$) to
achieve a physical resolution of $\sim$80 pc for this $2<z<3$ LAE sample,
allowing a detailed characterization of the LAE rest-frame ultraviolet
continuum surface brightness profiles and substructure. We use lens-model
reconstructions of the LAEs to identify and model individual clumps, which we
subsequently use to constrain the parameters of a generative statistical model
of the LAE population. Since the BELLS GALLERY sample is selected primarily on
the basis of Lyman-$\alpha$ emission, the LAEs that we study here are likely to
be directly comparable to those selected in wide-field narrow-band LAE surveys,
in contrast with the lensed LAEs identified in cluster lensing fields. We find
an LAE clumpiness fraction of approximately 88%, significantly higher than
found in previous (non-lensing) studies. We find a well-resolved characteristic
clump half-light radii of $\sim$350 pc, a scale comparable to the largest H II
regions seen in the local universe. This statistical characterization of LAE
surface-brightness profiles will be incorporated into future lensing analyses
using the BELLS GALLERY sample to constrain the incidence of dark-matter
substructure in the foreground lensing galaxies.},
added-at = {2017-08-30T10:02:18.000+0200},
author = {Cornachione, Matthew and Bolton, Adam and Shu, Yiping and Zheng, Zheng and Montero-Dorta, Antonio D. and Brownstein, Joel R. and Oguri, Masamune and Kochanek, Christopher S. and Mao, Shude and Perez-Fournon, Ismael and Marques-Chaves, Rui and Menard, Brice},
biburl = {https://www.bibsonomy.org/bibtex/2912f52eb1b44bb09927bace55d9dc4de/miki},
description = {[1708.08854] The BOSS Emission-Line Lens Survey V. Morphology and Substructure of Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY},
interhash = {e711744a00ff18dae5fe9d792d7abcd8},
intrahash = {912f52eb1b44bb09927bace55d9dc4de},
keywords = {LAE clumps emission line},
note = {cite arxiv:1708.08854Comment: 12 pages, 5 figures},
timestamp = {2017-08-30T10:02:18.000+0200},
title = {The BOSS Emission-Line Lens Survey V. Morphology and Substructure of
Lensed Lyman-$\alpha$ Emitters at redshift $z\approx2.5$ in the BELLS GALLERY},
url = {http://arxiv.org/abs/1708.08854},
year = 2017
}