69 citations · 104 across the 3 of their papers we have counts for
4 papers · 1 filter
The brightest stars of the sigma Orionis cluster
J. A. Caballero
Context: The very young sigma Orionis cluster (about 3 Ma) is a cornerstone for the understanding of the formation of stars and substellar objects down to planetary masses. However…
GRB 051028: an intrinsically faint GRB at high redshift?
A. J. Castro-Tirado, M. Jelinek, S. B. Pandey +16
We present multiwavelength observations of the gamma-ray burst GRB 051028 detected by HETE-2 in order to derive its afterglow emission parameters and to determine the reason for it…
Are isolated planetary-mass objects really isolated? A brown dwarf-exoplanet system candidate in the sigma Orionis cluster
J. A. Caballero, E. L. Martin, P. D. Dobbie +1
The recent detection by direct imaging of three giant planets at wide separation (50-250 AU) from their primaries has raised the question about the ``true isolation'' of planetary-…
Photometric variability of a young, low-mass brown dwarf
M. R. Zapatero Osorio, J. A. Caballero, V. J. S. Bejar +1
We report differential I-band and J-band photometry of S Ori 45, a cool (M8.5), young (1-8 Myr) brown dwarf of the sigma Orionis cluster with a likely mass estimated at around 20 t…