J/ApJ/824/86 The BOSS emission-line lens survey. III. (Shu+, 2016)
The BOSS emission-line lens survey.
III. Strong lensing of Lyα emitters by individual galaxies.
Shu Y., Bolton A.S., Kochanek C.S., Oguri M., Perez-Fournon I., Zheng Z.,
Mao S., Montero-Dorta A.D., Brownstein J.R., Marques-Chaves R., Menard B.
<Astrophys. J., 824, 86-86 (2016)>
=2016ApJ...824...86S 2016ApJ...824...86S (SIMBAD/NED BibCode)
ADC_Keywords: Gravitational lensing ; Galaxy catalogs ; Redshifts ;
Magnitudes
Keywords: dark matter - galaxies: elliptical and lenticular, cD -
gravitational lensing: strong - techniques: spectroscopic
Abstract:
We introduce the Baryon Oscillation Spectroscopic Survey (BOSS)
Emission-Line Lens Survey GALaxy-Lyα EmitteR sYstems (BELLS
GALLERY) Survey, which is a Hubble Space Telescope program to image a
sample of galaxy-scale strong gravitational lens candidate systems
with high-redshift Lyα emitters (LAEs) as the background
sources. The goal of the BELLS GALLERY Survey is to illuminate dark
substructures in galaxy-scale halos by exploiting the small-scale
clumpiness of rest-frame far-UV emission in lensed LAEs, and to
thereby constrain the slope and normalization of the substructure-mass
function. In this paper, we describe in detail the spectroscopic
strong-lens selection technique, which is based on methods adopted in
the previous Sloan Lens ACS (SLACS) Survey, BELLS, and SLACS for the
Masses Survey. We present the BELLS GALLERY sample of the 21
highest-quality galaxy-LAE candidates selected from ∼1.4x106 galaxy
spectra in the BOSS of the Sloan Digital Sky Survey III. These systems
consist of massive galaxies at redshifts of approximately 0.5 strongly
lensing LAEs at redshifts from 2-3. The compact nature of LAEs makes
them an ideal probe of dark substructures, with a substructure-mass
sensitivity that is unprecedented in other optical strong-lens
samples. The magnification effect from lensing will also reveal the
structure of LAEs below 100 pc scales, providing a detailed look at
the sites of the most concentrated unobscured star formation in the
universe. The source code used for candidate selection is available
for download as a part of this release.
Description:
Motivated by the success of the Sloan Lens ACS Survey (SLACS, Bolton et al.
2006ApJ...638..703B 2006ApJ...638..703B), the Baryon Oscillation Spectroscopic Survey (BOSS)
Emission-Line Lens Survey (BELLS, Brownstein et al. 2012ApJ...744...41B 2012ApJ...744...41B),
and the SLACS for the Masses Survey (S4TM, Shu et al. 2015ApJ...803...71S 2015ApJ...803...71S)
in uncovering significant new strong-lens samples, we initiated the
BELLS for the GALaxy-Lyα EmitteR sYstems Survey (the BELLS GALLERY
Survey hereafter) for dark-substructure detections in galaxy-scale
gravitational lenses with high-redshift Lyα emitters (LAEs) as the
lensed sources. The lens candidates of the BELLS GALLERY Survey are
spectroscopically selected from the final data release, Data Release 12
(DR12), of the BOSS (Dawson et al. 2013AJ....145...10D 2013AJ....145...10D) of the Sloan
Digital Sky Survey III (SDSS-III, Eisenstein et al. 2011AJ....142...72E 2011AJ....142...72E),
using selection techniques similar to those employed in the SLACS,
BELLS, and S4TM surveys. A Hubble Space Telescope (HST) follow-up
imaging program has been approved and the observations are currently
underway (HST Cycle 23, GO Program # 14189, PI: A. S. Bolton). The
candidate systems are massive galaxies at redshifts of approximately 0.5,
whose BOSS spectra show Lyα emission from more distant LAEs at
redshifts of 2-3.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 96 21 Selected Properties of the 21 Galaxy-LAE Lens
Candidate Systems
table2.dat 96 166 Selected Properties of the Remaining 166
Galaxy-LAE Lens Candidate System in the BELLS
GALLERY Parent Sample
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See also:
J/ApJ/835/161 : A cosmic void catalog of SDSS DR12 BOSS galaxies (Mao+, 2017)
Byte-by-byte Description of file: table1.dat table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- SDSS
6- 24 A19 --- SDSS SDSS name
25 A1 --- n_SDSS [cd] Note on SDSS (only in table1) (1)
27- 40 A14 --- PMF SDSS Plate-MJD-Fiber
42- 47 F6.4 --- zL Redshift of the foreground lens galaxy
49- 54 F6.4 --- zs Redshift of the lensed LAE
56- 57 I2 h RAh Hour of Right Ascension (J2000)
59- 60 I2 min RAm Minute of Right Ascension (J2000)
62- 68 F7.4 s RAs Second of Right Ascension (J2000)
70 A1 --- DE- Sign of the Declination (J2000)
71- 72 I2 deg DEd Degree of Declination (J2000)
74- 75 I2 arcmin DEm Arcminute of Declination (J2000)
77- 83 F7.4 arcsec DEs Arcsecond of Declination (J2000)
85- 89 F5.2 mag imag BOSS-measured i-band apparent cmodel
magnitude within the 1" fiber
91- 96 F6.2 10-20W/m2 FLya Total apparent flux of the Lyα emission
(in 10-17erg/s/cm2)
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Note (1): Note as follows:
c = Two systems with strong evidence for lensing signals in their SDSS images.
Please see Section 3.2 for details;
d = Two systems with probable evidence for lensing signals in their SDSS
images. Please see Section 3.2 for details.
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History:
From electronic version of the journal
References:
Brownstein et al. Paper I. 2012ApJ...744...41B 2012ApJ...744...41B
Bolton et al. Paper II. 2012ApJ...757...82B 2012ApJ...757...82B
Shu et al. Paper IV. 2016ApJ...833..264S 2016ApJ...833..264S
Cornachione et al. Paper V. 2018ApJ...853..148C 2018ApJ...853..148C
(End) Tiphaine Pouvreau [CDS] 19-Feb-2018