924 citations · 8.7k across the 152 of their papers we have counts for
Showing 2002Show all
2 papers · 1 filter
astro-ph2002★ 127 cited
A Methane Isolated Planetary Mass Object in Orion
M. R. Zapatero Osorio, V. J. S. Bejar, E. L. Martin +5
We report on the discovery of a free-floating methane dwarf toward the direction of the young star cluster sigma Orionis. Based on the object's far-red optical and near-infrared ph…
astro-ph2002★ 191 cited
Lithium and Halpha in stars and brown dwarfs of sigma Orionis
M. R. Zapatero Osorio, V. J. S. Bejar, Ya. Pavlenko +4
We present intermediate- and low-resolution optical spectra around Halpha and LiI 6708 A for a sample of 25 low mass stars and 2 brown dwarfs with confirmed membership in the pre-m…