Observation and confirmation of nine strong-lensing systems in Dark Energy Survey Year 1 data

DES Collaboration

doi:10.1093/mnras/staa200

Observation and confirmation of nine strong-lensing systems in Dark Energy Survey Year 1 data

DES Collaboration

Astronomy

Research output: Contribution to journal › Review article › peer-review

7 Scopus citations

Abstract

We describe the observation and confirmation of nine new strong gravitational lenses discovered in Year 1 data from the Dark Energy Survey (DES). We created candidate lists based on (i) galaxy group and cluster samples, and (ii) photometrically selected galaxy samples. We selected 46 candidates through visual inspection and then used the Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope to acquire a spectroscopic follow-up of 21 of these candidates. Through an analysis of these spectroscopic follow-up data, we confirmed nine new lensing systems and rejected two candidates, and the analysis was inconclusive on 10 candidates. For each of the confirmed systems, our report measured spectroscopic properties, estimated source image-lens separations, and estimated enclosed masses as well. The sources that we targeted have an i-band surface brightness range of i_SB ∼ 22-24 mag arcsec⁻² and a spectroscopic redshift range of z_spec ∼ 0.8−2.6. The lens galaxies have a photometric redshift range of z_lens ∼ 0.3−0.7.

Original language	English (US)
Pages (from-to)	1308-1322
Number of pages	15
Journal	Monthly Notices of the Royal Astronomical Society
Volume	494
Issue number	1
DOIs	https://doi.org/10.1093/mnras/staa200
State	Published - May 1 2020

Keywords

Galaxies: individual
Gravitational lensing: strong
Techniques: spectroscopic

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/staa200

Cite this

@article{b90dec4880694295b147ae52b90695c5,

title = "Observation and confirmation of nine strong-lensing systems in Dark Energy Survey Year 1 data",

abstract = "We describe the observation and confirmation of nine new strong gravitational lenses discovered in Year 1 data from the Dark Energy Survey (DES). We created candidate lists based on (i) galaxy group and cluster samples, and (ii) photometrically selected galaxy samples. We selected 46 candidates through visual inspection and then used the Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope to acquire a spectroscopic follow-up of 21 of these candidates. Through an analysis of these spectroscopic follow-up data, we confirmed nine new lensing systems and rejected two candidates, and the analysis was inconclusive on 10 candidates. For each of the confirmed systems, our report measured spectroscopic properties, estimated source image-lens separations, and estimated enclosed masses as well. The sources that we targeted have an i-band surface brightness range of iSB ∼ 22-24 mag arcsec−2 and a spectroscopic redshift range of zspec ∼ 0.8−2.6. The lens galaxies have a photometric redshift range of zlens ∼ 0.3−0.7.",

keywords = "Galaxies: individual, Gravitational lensing: strong, Techniques: spectroscopic",

author = "{DES Collaboration} and B. Nord and E. Buckley-Geer and H. Lin and N. Kuropatkin and T. Collett and Tucker, {D. L.} and Diehl, {H. T.} and A. Agnello and A. Amara and Abbott, {T. M.C.} and S. Allam and J. Annis and S. Avila and K. Bechtol and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Cunha, {C. E.} and {da Costa}, {L. N.} and C. Davis and {de Vicente}, J. and P. Doel and Eifler, {T. F.} and Evrard, {A. E.} and E. Fernandez and B. Flaugher and P. Fosalba and J. Frieman and J. Garc{\'i}a-Bellido and E. Gaztanaga and D. Gruen and Gruendl, {R. A.} and G. Gutierrez and Hartley, {W. G.} and Hollowood, {D. L.} and K. Honscheid and B. Hoyle and James, {D. J.} and K. Kuehn and O. Lahav and M. Lima and Maia, {M. A.G.} and M. March and Marshall, {J. L.} and P. Melchior and F. Menanteau and R. Miquel and Plazas, {A. A.}",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society",

year = "2020",

month = may,

day = "1",

doi = "10.1093/mnras/staa200",

language = "English (US)",

volume = "494",

pages = "1308--1322",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

TY - JOUR

T1 - Observation and confirmation of nine strong-lensing systems in Dark Energy Survey Year 1 data

AU - DES Collaboration

AU - Nord, B.

AU - Buckley-Geer, E.

AU - Lin, H.

AU - Kuropatkin, N.

AU - Collett, T.

AU - Tucker, D. L.

AU - Diehl, H. T.

AU - Agnello, A.

AU - Amara, A.

AU - Abbott, T. M.C.

AU - Allam, S.

AU - Annis, J.

AU - Avila, S.

AU - Bechtol, K.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Cunha, C. E.

AU - da Costa, L. N.

AU - Davis, C.

AU - de Vicente, J.

AU - Doel, P.

AU - Eifler, T. F.

AU - Evrard, A. E.

AU - Fernandez, E.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gutierrez, G.

AU - Hartley, W. G.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - Hoyle, B.

AU - James, D. J.

AU - Kuehn, K.

AU - Lahav, O.

AU - Lima, M.

AU - Maia, M. A.G.

AU - March, M.

AU - Marshall, J. L.

AU - Melchior, P.

AU - Menanteau, F.

AU - Miquel, R.

AU - Plazas, A. A.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - We describe the observation and confirmation of nine new strong gravitational lenses discovered in Year 1 data from the Dark Energy Survey (DES). We created candidate lists based on (i) galaxy group and cluster samples, and (ii) photometrically selected galaxy samples. We selected 46 candidates through visual inspection and then used the Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope to acquire a spectroscopic follow-up of 21 of these candidates. Through an analysis of these spectroscopic follow-up data, we confirmed nine new lensing systems and rejected two candidates, and the analysis was inconclusive on 10 candidates. For each of the confirmed systems, our report measured spectroscopic properties, estimated source image-lens separations, and estimated enclosed masses as well. The sources that we targeted have an i-band surface brightness range of iSB ∼ 22-24 mag arcsec−2 and a spectroscopic redshift range of zspec ∼ 0.8−2.6. The lens galaxies have a photometric redshift range of zlens ∼ 0.3−0.7.

AB - We describe the observation and confirmation of nine new strong gravitational lenses discovered in Year 1 data from the Dark Energy Survey (DES). We created candidate lists based on (i) galaxy group and cluster samples, and (ii) photometrically selected galaxy samples. We selected 46 candidates through visual inspection and then used the Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope to acquire a spectroscopic follow-up of 21 of these candidates. Through an analysis of these spectroscopic follow-up data, we confirmed nine new lensing systems and rejected two candidates, and the analysis was inconclusive on 10 candidates. For each of the confirmed systems, our report measured spectroscopic properties, estimated source image-lens separations, and estimated enclosed masses as well. The sources that we targeted have an i-band surface brightness range of iSB ∼ 22-24 mag arcsec−2 and a spectroscopic redshift range of zspec ∼ 0.8−2.6. The lens galaxies have a photometric redshift range of zlens ∼ 0.3−0.7.

KW - Galaxies: individual

KW - Gravitational lensing: strong

KW - Techniques: spectroscopic

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U2 - 10.1093/mnras/staa200

DO - 10.1093/mnras/staa200

M3 - Review article

AN - SCOPUS:85085357580

SN - 0035-8711

VL - 494

SP - 1308

EP - 1322

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Observation and confirmation of nine strong-lensing systems in Dark Energy Survey Year 1 data

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Keywords

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