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Euclid Definition Study Report
Euclid is a space-based survey mission from the European Space Agency designed to understand the origin of the Universe's accelerating expansion. It will use cosmological probes to investigate theExpand
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Space Velocities of L- and T-type Dwarfs
We have obtained radial velocities of a sample of 18 ultracool dwarfs (M6.5-T8) using high-resolution, near-infrared spectra obtained with NIRSPEC and the Keck II telescope. We have confirmed thatExpand
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ESPRESSO: The next European exoplanet hunter
The acronym ESPRESSO stems for Echelle SPectrograph for RockyExoplanets and Stable Spectroscopic Observations;this instrument will be the next VLThigh resolution spectrograph. Expand
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Dynamical Masses of the Binary Brown Dwarf GJ 569 Bab
We have obtained new images and high-resolution (R ~ 22,400) near-infrared (1.2400-1.2575 μm) spectra of each component of the brown dwarf binary GJ 569 Bab using the adaptive optics facility of theExpand
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The substellar mass function in σ Orionis II. Optical, near-infrared and IRAC/Spitzer photometry of young cluster brown dwarfs and planetary-mass objects ,
Aims. We investigate the mass function in the substellar domain down to a few Jupiter masses in the young σ Orionis open cluster (3 ± 2M a,d = 360 +70 −60 pc). Methods. We have performed a deepExpand
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A Methane isolated planetary mass object in orion
We report on the discovery of a free-floating methane dwarf toward the direction of the young star cluster σ Ori. Based on the object's far-red, optical, and near-infrared photometry andExpand
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Spectroscopic Rotational Velocities of Brown Dwarfs
We have obtained projected rotation velocities (vrot sin i) of a sample of 19 ultracool dwarfs with spectral types in the interval M6.5-T8 using high-resolution, near-infrared spectra obtained withExpand
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Glancing views of the Earth. From a lunar eclipse to an exoplanetary transit
It has been posited that lunar eclipse observations may help predict the in-transit signature of Earth-like extrasolar planets. However, a comparative analysis of the two phenomena addressing inExpand
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A Search for Very Low Mass Stars and Brown Dwarfs in the Young σ Orionis Cluster
We present a CCD-based photometric survey covering 870 arcmin2 in a young stellar cluster around the young multiple star σ Orionis. Our survey-limiting R, I, and Z magnitudes are 23.2, 21.8, andExpand
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The discovery of a very cool binary system
The definitive version can be found at: http://www3.interscience.wiley.com/ Copyright Royal Astronomical Society
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