Thomas R. Geballe

TL;DR: In this article, the infrared spectra of brown dwarfs with spectral types from mid-L to T were presented, showing that the onset of detectable amounts of CH$4}$ occurs near spectral type L5.

TL;DR: In this article, the authors investigated whether such a low ratio can be obtained in simulations of the merger of a CO and a He white dwarf in a binary system, where the total mass is 0.9 Mdot and the initial mass ratio varies between 0.5 and 0.99.

TL;DR: In this article, the authors discuss the science case for an alternative new instrument, consisting instead of a multi-object, medium-resolution, high-throughput spectrograph, covering simultaneously the optical and near-infrared slices of the electromagnetic spectrum.

TL;DR: In this article, the photospheric spectra of all L and T dwarfs contain strong molecular bands and alkali absorption features, and those of L and early t dwarfs are also affected by dust.