Robert C. Nichol

TL;DR: In this article, a sample of 1.3 million galaxies extracted from the first year of the Dark Energy Survey data was optimized to measure Baryon Acoustic Oscillations in the presence of significant redshift uncertainties.

TL;DR: In this article, the first group-and cluster-scale strong gravitational lensing systems were found in Dark Energy Survey data and confirmed using spectroscopic follow-up of 21 candidates using the Gemini Multiobject Spectrograph at the Gemini South telescope and the Inamori-Magellan Areal Camera and Spectrogram at the Magellan/Baade telescope.

TL;DR: In this article, the authors report the observation and physical characterization of the possible dwarf planet DeeDee, a dynamically detached trans-Neptunian object discovered at 92 AU, which will reach its perihelion distance of 38 AU in the year 2142.

TL;DR: In this article, the authors used Monte Carlo Realization techniques to simulate the growth and evolution of intelligent life in the Galaxy and showed that if civilisations are "human" in nature (i.e., they are only radio loud for ~100 years, and can only detect each other with an SKA-like instrument out to 100 pc, within a maximum communication time of 100 years), then the probability for such civilisations accidentally detecting each other is low (~10^{-7}), much lower than if other, dedicated communication techniques are permissible (e.g., optical

TL;DR: In this paper, the authors reported the discovery of the eighth and ninth known Trojans in stable orbits around Neptune's leading Lagrange point, L4, in data obtained during the 2013-14 and 2014-15 observing seasons by the Dark Energy Survey, using the DECam on the 4-meter Blanco telescope at Cerro Tololo Inter-American Observatory.