102 citations · 410 across the 10 of their papers we have counts for
10 papers
Triboelectrification of KCl and ZnS particles in approximated exoplanet environments
Joshua Méndez Harper, Christiane Helling, Josef Dufek
When mobilized, granular materials become charged as grains undergo collisions and frictional interactions. On Earth, this process, known as triboelectrification, has been recogniz…
Direct Imaging discovery of a second planet candidate around the possibly transiting planet host CVSO 30
T. O. B. Schmidt, R. Neuhäuser, C. Briceño +11
We surveyed the 25 Ori association for direct-imaging companions. This association has an age of only few million years. Among other targets, we observed CVSO 30, which has recentl…
The First Millimeter Detection of a Non-Accreting Ultracool Dwarf
P. K. G. Williams, S. L. Casewell, C. R. Stark +3
The well-studied M9 dwarf TVLM 513-46546 is a rapid rotator (P_rot ~ 2 hr) hosting a stable, dipolar magnetic field of ~3 kG surface strength. Here we report its detection with ALM…
Characterization of Low-mass, Wide-separation Substellar Companions to Stars in Upper Scorpius: Near-infrared Photometry and Spectroscopy
François-René Lachapelle, David Lafrenière, Jonathan Gagné +4
We present new 0.9-2.45 m spectroscopy (), and , , , , photometry, obtained at Gemini North, of three low-mass brown dwarf companions on wi…
Jupiter as a Giant Cosmic Ray Detector
Paul B. Rimmer, Craig R. Stark, Christiane Helling
We explore the feasibility of using the atmosphere of Jupiter to detect Ultra-High-Energy Cosmic Rays (UHECR's). The large surface area of Jupiter allows us to probe cosmic rays of…
Discovery of a ~23 Mjup Brown Dwarf Orbiting ~700 AU from the Massive Star HIP 78530 in Upper Scorpius
David Lafrenière, Ray Jayawardhana, Markus Janson +3
We present the discovery of a substellar companion on a wide orbit around the ~2.5 Msun star HIP 78530, which is a member of the 5 Myr-old Upper Scorpius association. We have obtai…