Galaxy formation and evolution

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The SAMI Pilot Survey: stellar kinematics of galaxies in Abell 85, 168 and 2399

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 454:2 (2015) 2050-2066

Authors:

LMR Fogarty, N Scott, MS Owers, SM Croom, K Bekki, RCW Houghton, J van de Sande, F D'Eugenio, GN Cecil, MM Colless, J Bland-Hawthorn, S Brough, L Cortese, RL Davies, DH Jones, M Pracy, JT Allen, JJ Bryant, M Goodwin, AW Green, IS Konstantopoulos, JS Lawrence, NPF Lorente, S Richards, RG Sharp
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ALMA constraints on the faint millimetre source number counts and their contribution to the cosmic infrared background

Astronomy & Astrophysics EDP Sciences 584 (2015) a78

Authors:

S Carniani, R Maiolino, G De Zotti, M Negrello, A Marconi, MS Bothwell, P Capak, C Carilli, M Castellano, S Cristiani, A Ferrara, A Fontana, S Gallerani, G Jones, K Ohta, K Ota, L Pentericci, P Santini, K Sheth, L Vallini, E Vanzella, J Wagg, RJ Williams
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The HerMES sub-millimetre local and low-redshift luminosity functions

(2015)

Authors:

L Marchetti, M Vaccari, A Franceschini, V Arumugam, H Aussel, M Bethermin, J Bock, A Boselli, V Buat, D Burgarella, DL Clements, A Conley, L Conversi, A Cooray, CD Dowell, D Farrah, A Feltre, J Glenn, M Griffin, E Hatziminaoglou, S Heinis, E Ibar, RJ Ivison, HT Nguyen, B O'Halloran, SJ Oliver, A Omont, MJ Page, A Papageorgiou, CP Pearson, I Perez-Fournon, M Pohlen, D Rigopoulou, IG Roseboom, M Rowan-Robinson, B Schulz, Douglas Scott, N Seymour, DL Shupe, AJ Smith, M Symeonidis, I Valtchanov, M Viero, L Wang, J Wardlow, CK Xu, M Zemcov
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Modeling Lyman-\alpha\ Forest Cross-Correlations with LyMAS

(2015)

Authors:

Cassandra Lochhaas, David H Weinberg, Sébastien Peirani, Yohan Dubois, Stéphane Colombi, Jérémy Blaizot, Andreu Font-Ribera, Christophe Pichon, Julien Devriendt
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Space Warps II. New gravitational lens candidates from the CFHTLS discovered through citizen science

Monthly Notices of the Royal Astronomical Society Oxford University Press 455:2 (2015) 1191-1210

Authors:

Anupreeta More, Aprajita Verma, Philip J Marshall, Surhud More, Elisabeth Baeten, Julianne Wilcox, Christine Macmillan, Claude Cornen, Amit Kapadia, Michael Parrish, Chris Snyder, Christopher P Davis, Raphael Gavazzi, Chris J Lintott, Robert Simpson, David Miller, Arfon M Smith, Edward Paget, Prasenjit Saha, Rafael Küng, Thomas E Collett

Abstract:

We report the discovery of 29 promising (and 59 total) new lens candidates from the CFHT Legacy Survey (CFHTLS) based on about 11 million classifications performed by citizen scientists as part of the first Space Warps lens search. The goal of the blind lens search was to identify lens candidates missed by robots (the RingFinder on galaxy scales and ArcFinder on group/cluster scales) which had been previously used to mine the CFHTLS for lenses. We compare some properties of the samples detected by these algorithms to the Space Warps sample and find them to be broadly similar. The image separation distribution calculated from the Space Warps sample shows that previous constraints on the average density profile of lens galaxies are robust. SpaceWarps recovers about 65% of known lenses, while the new candidates show a richer variety compared to those found by the two robots. This detection rate could be increased to 80% by only using classifications performed by expert volunteers (albeit at the cost of a lower purity), indicating that the training and performance calibration of the citizen scientists is very important for the success of Space Warps. In this work we present the SIMCT pipeline, used for generating in situ a sample of realistic simulated lensed images. This training sample, along with the false positives identified during the search, has a legacy value for testing future lens finding algorithms. We make the pipeline and the training set publicly available.
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