Disks around Young Brown Dwarfs
We present some results from a systematic survey for disks around spectroscopically identified young brown dwarfs and very low mass
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Evolution of Brown Dwarf Atmospheres: Investigating Physical Parameters from Near-IR Spectra
We obtained near-infrared spectra of a sample of very low mass objects as a function of age in order to
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Finding Brown Dwarf Companions with HST/NICMOS
We present the results of a HST/NICMOS coronagraphic survey for the direct detection of substellar companions within the young TW
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Formation and Evolution of Very Low Mass Stars and Brown Dwarfs
The formation and evolution of brown dwarfs are currently "hot topics" in cool star research. Latest observations and modeling efforts
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Halo dark clusters of brown dwarfs and molecular clouds
The observations of microlensing events in the Large Magellanic Cloud suggest that a sizable fraction (\sim 50%) of the galactic
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Hanbury Brown - Twiss Interferometry in High Energy Nuclear and Particle Physics
I review recent applications of two-particle intensity interferometry in high energy physics, concentrating on relativistic heavy ion collisions. By measuring
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How do brown dwarves form?
We review and evaluate four mechanisms for forming brown dwarves: (i) dynamical ejection of a stellar embryo from its placental
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Infrared Spectroscopy of Brown Dwarfs: the onset of methane absorption in L dwarfs and the L/T transition
We present infrared spectra of brown dwarfs with spectral types from mid-L to T. The 0.9-2.5 $μ$m spectra of three
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IZ Photometry of L dwarfs and the implications for brown dwarf surevys
The I-Z colour has been recently shown to be a good temperature indicator for M dwarfs. We present the first
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Lensing of Invisible Stars by Brown Dwarfs
To detect brown dwarfs in the dark galactic halo through gravitational lensing, experiments follow the luminosity of millions of stars
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Line Formation in the Atmosphere of Brown Dwarf Gliese 229B: $CH_4$ at 2.3 micron
We investigate the formation of methane line at 2.3 ${\rm μm}$ in Brown Dwarf Gliese 229B. Two sets of model
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Lithium and the Nature of Brown Dwarf Candidates
This paper discusses the ability of Li to confirm the substellar nature of a brown dwarf candidate. Theoretical computations using
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Low Mass Stars and Brown Dwarfs around Sigma Orionis
We present optical spectroscopy of 71 photometric candidate low-mass members of the cluster associated with Sigma Orionis. Thirty-five of these
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MACHOs as brown dwarfs
Recent observations of microlensing events in the Large Magellanic Cloud suggest that a sizable fraction of the galactic halo is
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Microlensing by brown dwarfs: the case of dark clusters
Experiments are looking for diffuse brown dwarfs in the dark galactic halo through the gravitational lens effect. If brown dwarfs
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Modeling Brown Dwarfs, L Dwarfs, and T Dwarfs
In this brief contribution, I touch on a subset of recent efforts in spectral and opacity modeling aimed at improving
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Multiplicity, kinematics and rotation rates of very young brown dwarfs in ChaI
We have studied twelve very young (1-5Myr) bona fide and candidate brown dwarfs in the ChaI star forming region in
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New Ideas in the Theory of Extrasolar Giant Planets and Brown Dwarfs
We summarize and extend recent work on the theory of extrasolar giant planets (EGPs) and brown dwarfs, paying particular attention
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Non-equilibrium chemistry in the atmospheres of brown dwarfs
Carbon monoxide and ammonia have been detected in the spectrum of Gl 229B at abundances that differ substantially from those
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Numerical Results on Low Mass Star and Brown Dwarf Multiplicity
We have undertaken a series of hydrodynamic + N-body simulations in order to explore the properties of young stars. Our
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Optical Spectroscopy of DENIS Mini-survey Brown Dwarf Candidates
We present optical (6500-9200A) spectroscopy of eight cool dwarfs detected in a 231 square degree ``Mini-survey'' of the Deep NEar
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Orbital migration and the brown dwarf desert
The orbital elements of extreme mass ratio binaries will be modified by interactions with surrounding circumstellar disks. For brown dwarf
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Parallaxes of Brown Dwarfs at USNO
Trigonometric parallaxes have been measured by Dahn et al. (2002) for 28 cool dwarfs and brown dwarfs, including 17 L
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Pre-Main Sequence models for low-mass stars and brown dwarfs
We present evolutionary models for low mass stars and brown dwarfs ($m \le 1.2 \msol$) based on recent improvement of
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