NOAO >   Observing Info >   Approved Programs >   2016B-0067

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Program Information for 2016B-0067


PI: Tommaso Treu, UCLA, tt@astro.ucla.edu
Address: Physics Department, Physics and Astronomy Building, Los Angeles, CA 90095 USA

CoI: Adriano Agnello, ESO
CoI: Daniel Gilman, UCLA
CoI: Veronica Motta, Universidad de Valparaiso
CoI: Timo Anguita, Universidad Andres Bello
CoI: Richard McMahon, University of Cambridge
CoI: Chris Fassnacht, UC Davis
CoI: C E Rusu, UC Davis
CoI: Ferndanda Ostrovski, University of Cambridge

Title: High-resolution imaging confirmation of gravitationally lensed quasars discovered in STRIDES

Abstract: Gravitationally lensed quasars are valuable probes of: (1) cosmological distances and the expansion history of the Universe; (2) the luminous and dark matter content in massive lens galaxies; (3) the co-evolution of quasars and their host galaxies; (4) inner structure of AGN. Progress in these fields has been limited chiefly by the paucity of known systems. For this reason, as STRIDES team we have selected from the DES/ATLAS/SDSS imaging datasets a large sample of new lensed quasar candidates in the Southern Hemisphere. Use of diverse techniques, from data mining to multi-band modelling, maximizes the number of high-grade candidates. Our goal is to {it confirm} 120 new lensed quasars brighter than $i<21$, which would be a major improvement with respect to current samples. Based on our high purity of 50%, meeting our goal requires targeting $sim0 candidates. The SOAR Adaptive Optics Module in $z^$ band is ideal to confirm the systems by detecting the lens galaxy between the QSO images (typically separated by -1.2''$) and reject false positives. Together with 2016A scheduled time, and with the 2016B request submitted by our Chilean collaborators, this proposal will allow us to complete follow-up of the entire sample, including the prime RA range for DES.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2016B):  SOAR/SAMI -- 3n on Dec 06 - Dec 08 2016


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2016B-0067

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