102 citations · 410 across the 10 of their papers we have counts for
5 papers · 1 filter
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…
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…
Studying the Physical Diversity of Late-M Dwarfs with Dynamical Masses
Trent Dupuy, Michael Liu, Brendan Bowler +4
We present a systematic study of the physical properties of late-M dwarfs based on high-quality dynamical mass measurements and near-infrared (NIR) spectra. We use astrometry from…
Optical and Near-Infrared Spectroscopy of the L Subdwarf SDSS J125637.13-022452.4
Adam J. Burgasser, Soeren Witte, Christiane Helling +3
Red optical and near-infrared spectroscopy are presented for SDSS J125637.13-022452.4, one of only four L subdwarfs reported to date. These data confirm the low-temperature, metal-…