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We report modelling follow-up of recently-discovered gravitational-lenscandidates in the Canada France Hawaii Telescope Legacy Survey. Lens modellingwas done by a small group of specially-interested volunteers from theSpaceWarps citizen-science community who originally found the candidate lenses.Models are categorised according to seven diagnostics indicating (a) the imagemorphology and how clear or indistinct it is, (b) whether the mass map andsynthetic lensed image appear to be plausible, and (c) how the lens-model masscompares with the stellar mass and the abundance-matched halo mass. The lensingmasses range from ~10^11 Msun to >10^13 Msun. Preliminary estimates of thestellar masses show a smaller spread in stellar mass (except for two lenses): afactor of a few below or above ~10^11 Msun. Therefore, we expect thestellar-to-total mass fraction to decline sharply as lensing mass increases.The most massive system with a convincing model is J1434+522 (SW05). The twolow-mass outliers are J0206-095 (SW19) and J2217+015 (SW42); if these two areindeed lenses, they probe an interesting regime of very low star-formationefficiency. Some improvements to the modelling software (SpaghettiLens), anddiscussion of strategies regarding scaling to future surveys with more andfrequent discoveries, are included.

Models of gravitational lens candidates from Space Warps CFHTLS