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Constraining the difference in convective blueshift between the components of alpha Centauri with precise radial velocities
New radial velocities of Cen A & B obtained in the framework the Anglo-Australian Planet Search programme as well as in the CORALIE programme are added to those by Endl et al. (2001) to improve theExpand
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The intermediate-age brown dwarf LP 944-20
Observations are presented which show that Li I λ 6708 is detected with an equivalent width of 0.53 ± 0.05A in the proper-motion object LP 944-20 (which is also known as BRI 0337-3535). Hα isExpand
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Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574
While following up L dwarf candidates selected photometrically from the Two Micron All Sky Survey, we uncovered an unusual object designated 2MASS J01415823-4633574. Its optical spectrum exhibitsExpand
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The Bottom of the Main Sequence — And Beyond
I Modelling Very Low-Mass Stars and Brown Dwarfs.- The Quiet Lives of Very Low Mass Stars and Brown Dwarfs.- Luminosity Functions and the Mass Function.- The Evolution of Low-Mass Stars.- TheExpand
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A Sample of Very Young Field L Dwarfs and Implications for the Brown Dwarf “Lithium Test” at Early Ages*
Using a large sample of optical spectra of late-type dwarfs, we identify a subset of late-M through L field dwarfs that, because of the presence of low-gravity features in their spectra, are believedExpand
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Two New Planets from the Anglo-Australian Planet Search
Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period ofExpand
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Infrared Parallaxes for Methane T Dwarfs
We report final results from our 2.5 yr infrared parallax program carried out with the European Southern Observatory 3.5 m New Technology Telescope and the SOFI infrared camera. Our program targetedExpand
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Solar-like Oscillations in α Centauri B
We have made velocity observations of the star α Centauri B from two sites, allowing us to identify 37 oscillation modes with l = 0-3. Fitting to these modes gives the large and small frequencyExpand
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Periodic photometric variability of the brown dwarf Kelu-1
We have detected a strong periodicity of 1.80±0.05 h in photometric observations of the brown dwarf Kelu-1. The peak-to-peak amplitude of the variation is ∼1.1 per cent (11.9±0.8 mmag) in a 41-nmExpand
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Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars
We present four new exoplanets: HIP 14810b and HIP 14810c, HD 154345b, and HD 187123c. The two planets orbiting HIP 14810, from the N2K project, have masses of 3.9 and 0.76 M_J. We have searched theExpand
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