Nord, B;
Buckley-Geer, E;
Lin, H;
Kuropatkin, N;
Collett, T;
Tucker, DL;
Diehl, HT;
... M Lima, M A G Maia, M March, J L Marshall, P Melchior, F Menante; + view all
(2020)
Observation and Confirmation of Nine Strong Lensing Systems in Dark Energy Survey Year 1 Data.
Monthly Notices of the Royal Astronomical Society
10.1093/mnras/staa200.
(In press).
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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 a) galaxy group and cluster samples and b) 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 spectroscopic follow-up of 21 of these candidates. Through analysis of this spectroscopic follow-up data, we confirmed nine new lensing systems and rejected two candidates, but the analysis was inconclusive on 10 candidates. For each of the confirmed systems, we report measured spectroscopic properties, estimated source image-lens separation, and estimated enclosed masses. The sources that we targeted have an i-band surface brightness range of iSB ∼ 22 − 24 mag/arcsec2 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. The lensing systems range in source image-lens separation 2 − 9″ and in enclosed mass 1012 − 1013M⊙.
| Type: | Article |
|---|---|
| Title: | Observation and Confirmation of Nine Strong Lensing Systems in Dark Energy Survey Year 1 Data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/staa200 |
| Publisher version: | https://doi.org/10.1093/mnras/staa200 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | gravitational lenses: general, gravitational lensing individual, gravitational lensing: strong, gravitation lensing: clusters, gravitational lensing:survey, surveys: DES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10092321 |
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