105 citations · 955 across the 17 of their papers we have counts for
9 papers
An IPHAS-based search for accreting very low-mass objects using VO tools
L. Valdivielso, E. L. Martin, H. Bouy +6
The main goal of this paper is to prove that accreting very low-mass stars and brown dwarfs can be identified in IPHAS, a Halpha emission survey of the northern Milky Way.Full expl…
Low-resolution spectroscopy and spectral energy distributions of selected sources towards sigma Orionis
J. A. Caballero, L. Valdivielso, E. L. Martin +3
Aims: We investigated in detail nine sources in the direction of the young sigma Orionis cluster, which is considered a unique site for studying stellar and substellar formation. T…
A deep look into the cores of young clusters I. sigma-Orionis
H. Bouy, N. Huelamo, E. L. Martin +9
Nearby young clusters are privileged places to study the star formation history. Over the last decade, the sigma-Orionis cluster has been a prime location for the study of young ve…
Follow-up observations of binary ultra-cool dwarfs
H. Bouy, E. L. Martin, W. Brandner +12
Astrometric observations of resolved binaries provide estimates of orbital periods and will eventually lead to measurement of dynamical masses. Only a few very low mass star and br…
Discovery of a wide companion near the deuterium burning mass limit in the Upper Scorpius association
V. J. S. Bejar, M. R. Zapatero Osorio, A. Perez-Garrido +5
We present the discovery of a companion near the deuterium burning mass limit located at a very wide distance, at an angular separation of 4.6+/-0.1 arcsec (projected distance of ~…
Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs. II. Mixed Trends in VB10 and LSR1835+32 and the Possible Role of Rotation
E. Berger, G. Basri, J. E. Gizis +8
[Abridged] As part of our on-going investigation of magnetic activity in ultracool dwarfs we present simultaneous radio, X-ray, UV, and optical observations of LSR1835+32 (M8.5), a…