We report the result from observations conducted with the Atacama Large
Millimeter/submillimeter Array (ALMA) to detect CII 158 um fine structure
line emission from galaxies embedded in one of the most spectacular Lyman-alpha
blobs (LABs) at z=3.1, SSA22-LAB1. Of three dusty star-forming galaxies
previously discovered by ALMA 860 um dust continuum survey toward SSA22-LAB1,
we detected the CII line from one, LAB1-ALMA3 at z=3.0993+/-0.0004. No line
emission was detected, associated with the other ALMA continuum sources or from
three rest-frame UV/optical selected z_spec~3.1 galaxies within the field of
view. For LAB1-ALMA3, we find relatively bright CII emission compared to the
infrared luminosity (L_CII/L_CII) and an extremely high CII 158 um and
NII 205 um emission line ratio (L_CII/L_NII>55). The relatively strong
CII emission may be caused by abundant photodissociation regions and
sub-solar metallicity, or by shock heating. The origin of the unusually strong
CII emission could be causally related to the location within the giant LAB,
although the relationship between extended Lyman-alpha emission and ISM
conditions of associated galaxies is yet to be understand.
Description
[1701.00043] ALMA reveals Strong [CII] emission in a galaxy embedded in a giant Lyman-alpha blob at z=3.1
%0 Generic
%1 umehata2016reveals
%A Umehata, Hideki
%A Matsuda, Yuichi
%A Tamura, Yoichi
%A Kohno, Kotaro
%A Smail, Ian
%A Ivison, R. J.
%A Steidel, Charles C.
%A Chapman, Scott C.
%A Geach, James E.
%A Hayes, Matthew
%A Nagao, Tohru
%A Ao, Yiping
%A Kawabe, Ryohei
%A Yun, Min S.
%A Hatsukade, Bunyo
%A Kubo, Mariko
%A Kato, Yuta
%A Saito, Tomoki
%A Ikarashi, Soh
%A Nakanishi, Kouichiro
%A Lee, Minju
%A Izumi, Takuma
%A Mori, Masao
%A Ouchi, Masami
%D 2016
%K CII Lya blob emission
%T ALMA reveals Strong CII emission in a galaxy embedded in a giant
Lyman-alpha blob at z=3.1
%U http://arxiv.org/abs/1701.00043
%X We report the result from observations conducted with the Atacama Large
Millimeter/submillimeter Array (ALMA) to detect CII 158 um fine structure
line emission from galaxies embedded in one of the most spectacular Lyman-alpha
blobs (LABs) at z=3.1, SSA22-LAB1. Of three dusty star-forming galaxies
previously discovered by ALMA 860 um dust continuum survey toward SSA22-LAB1,
we detected the CII line from one, LAB1-ALMA3 at z=3.0993+/-0.0004. No line
emission was detected, associated with the other ALMA continuum sources or from
three rest-frame UV/optical selected z_spec~3.1 galaxies within the field of
view. For LAB1-ALMA3, we find relatively bright CII emission compared to the
infrared luminosity (L_CII/L_CII) and an extremely high CII 158 um and
NII 205 um emission line ratio (L_CII/L_NII>55). The relatively strong
CII emission may be caused by abundant photodissociation regions and
sub-solar metallicity, or by shock heating. The origin of the unusually strong
CII emission could be causally related to the location within the giant LAB,
although the relationship between extended Lyman-alpha emission and ISM
conditions of associated galaxies is yet to be understand.
@misc{umehata2016reveals,
abstract = {We report the result from observations conducted with the Atacama Large
Millimeter/submillimeter Array (ALMA) to detect [CII] 158 um fine structure
line emission from galaxies embedded in one of the most spectacular Lyman-alpha
blobs (LABs) at z=3.1, SSA22-LAB1. Of three dusty star-forming galaxies
previously discovered by ALMA 860 um dust continuum survey toward SSA22-LAB1,
we detected the [CII] line from one, LAB1-ALMA3 at z=3.0993+/-0.0004. No line
emission was detected, associated with the other ALMA continuum sources or from
three rest-frame UV/optical selected z_spec~3.1 galaxies within the field of
view. For LAB1-ALMA3, we find relatively bright [CII] emission compared to the
infrared luminosity (L_[CII]/L_[CII]) and an extremely high [CII] 158 um and
[NII] 205 um emission line ratio (L_[CII]/L_[NII]>55). The relatively strong
[CII] emission may be caused by abundant photodissociation regions and
sub-solar metallicity, or by shock heating. The origin of the unusually strong
[CII] emission could be causally related to the location within the giant LAB,
although the relationship between extended Lyman-alpha emission and ISM
conditions of associated galaxies is yet to be understand.},
added-at = {2017-01-03T10:33:56.000+0100},
author = {Umehata, Hideki and Matsuda, Yuichi and Tamura, Yoichi and Kohno, Kotaro and Smail, Ian and Ivison, R. J. and Steidel, Charles C. and Chapman, Scott C. and Geach, James E. and Hayes, Matthew and Nagao, Tohru and Ao, Yiping and Kawabe, Ryohei and Yun, Min S. and Hatsukade, Bunyo and Kubo, Mariko and Kato, Yuta and Saito, Tomoki and Ikarashi, Soh and Nakanishi, Kouichiro and Lee, Minju and Izumi, Takuma and Mori, Masao and Ouchi, Masami},
biburl = {https://www.bibsonomy.org/bibtex/2b70ad7d028472a1949365df7416a0b0b/miki},
description = {[1701.00043] ALMA reveals Strong [CII] emission in a galaxy embedded in a giant Lyman-alpha blob at z=3.1},
interhash = {6c3767bffcef59347ed157d19e7a0794},
intrahash = {b70ad7d028472a1949365df7416a0b0b},
keywords = {CII Lya blob emission},
note = {cite arxiv:1701.00043Comment: 6 pages, 4 figures, 1 table, accepted for publication in the Astrophysical Journal Letters},
timestamp = {2017-01-03T10:33:56.000+0100},
title = {ALMA reveals Strong [CII] emission in a galaxy embedded in a giant
Lyman-alpha blob at z=3.1},
url = {http://arxiv.org/abs/1701.00043},
year = 2016
}