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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 (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), the Baryon Oscillation Spectroscopic Survey (BOSS) Emission-Line Lens Survey (BELLS, Brownstein et al. 2012ApJ...744...41B), and the SLACS for the Masses Survey (S4TM, Shu et al. 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) of the Sloan Digital Sky Survey III (SDSS-III, Eisenstein et al. 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:
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
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)
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.
History: From electronic version of the journal References: Brownstein et al. Paper I. 2012ApJ...744...41B Bolton et al. Paper II. 2012ApJ...757...82B Shu et al. Paper IV. 2016ApJ...833..264S Cornachione et al. Paper V. 2018ApJ...853..148C
(End) Tiphaine Pouvreau [CDS] 19-Feb-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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