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A Young Population of Brown Dwarfs
(Astronomical Society of the Pacific, 1998)
In a recent survey for faint red stars from a digital stack of Schmidt plates a number of candidate objects were identified. Parallax's for three of these objects have been reported showing them to have luminosities which ...
The Eclipsing Binary System CM Draconis
(Astronomical Society of the Pacific, 1998)
We compare observations from 0.40 to 2.41um of the binary system CM Draconis with synthetic spectra computed using the stellar atmosphere code PHOENIX.
A Comparison of the Infrared Spectra of Two Very Late-type M Dwarfs with Different Gravities
(Astronomical Society of the Pacific, 1998)
We present observations obtained during the commissioning of the upgraded Cooled Grating Spectrometer 4 on the UK Infrared Telescope on Mauna Kea, of the very low-mass objects TVLM 513-46546 and Gl 569B. Spectra were taken ...
Spectral evidence for dust in late-type M dwarfs
(1997-02-13)
We have found a dramatic change in the spectra of late-type M dwarfs at wavelengths shorter than 0.75 microns. Comparisons with synthetic spectra illustrate that this change is well explained by the presence of dust. It ...
Water and titanium oxide in late-type M dwarfs
(Astronomical Society of the Pacific, 1996)
Despite the identification of brown dwarf candidates the lack of understanding of M dwarfs has meant that it has not been possible to unambiguously distinguish these candidates from cool M dwarfs. Unlike hotter stars their ...
An Infrared Spectral Sequence for M Dwarfs
(Astronomical Society of the Pacific, 1994)
We present a spectral sequence from 1-2.5 um of M dwarfs from GL411 which is classified as M2V to the best brown dwarf candidate GD165B (M10V). This sequence shows the progressive importance of water vapour in the stmospheres ...