activity
20022016
most citedLithium and Halpha in stars and brown dwarfs of sigma Orionis

191 citations · 1.3k across the 26 of their papers we have counts for

collaborators

15 papers

astro-ph.EP2016★ 16 cited

Near-infrared photometry of WISE J085510.74071442.5

M. R. Zapatero Osorio, N. Lodieu, V. J. S. Béjar +7

(Abridged) We aim at measuring the near-infrared photometry, and deriving the mass, age, temperature, and surface gravity of WISE J085510.74-071442.5 (J0855-0714), which is the coo…

astro-ph.SR2009★ 88 cited

The Physical Properties of Four ~600K T Dwarfs

S. K. Leggett, M. C. Cushing, D. Saumon +16

We present Spitzer 7.6-14.5um spectra of ULAS J003402.77-005206.7 and ULAS J133553.45+113005.2, two T9 dwarfs with the latest spectral types currently known. We fit synthetic spect…

astro-ph2008★ 12 cited

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…

astro-ph2008★ 28 cited

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…

astro-ph2008★ 42 cited

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…

astro-ph2008★ 24 cited

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…