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THE 0.8-14.5 μm SPECTRA OF MID-L TO MID-T DWARFS: DIAGNOSTICS OF EFFECTIVE TEMPERATURE, GRAIN SEDIMENTATION, GAS TRANSPORT, AND SURFACE GRAVITY
We present new 5.2-14.5 {mu}m low-resolution spectra of 14 mid-L to mid-T dwarfs. We also present new 3.0-4.1 {mu}m spectra for five of these dwarfs. These data are supplemented by existing red andExpand
Evidence for two populations of classical transneptunian objects : The strong inclination dependence of classical binaries
Abstract We have searched 101 Classical transneptunian objects for companions with the Hubble Space Telescope. Of these, at least 21 are binary. The heliocentric inclinations of the objects weExpand
The Onset of Methane in L Dwarfs
We have detected weak absorption features produced by the strong ν3 methane band at 3.3 μm in two L dwarfs, 2MASSW J1507476-162738 and 2MASSI J0825196+211552, classified as spectral types L5 andExpand
Diverse albedos of small trans-neptunian objects
Discovery of trans-neptunian object (TNO) satellites and determination of their orbits has recently enabled estimation of the size and albedo of several small TNOs, extending the size range ofExpand
HD 98800: A unique stellar system of post-T tauri stars
HD 98800 is a system of four stars, and it has a large infrared excess that is thought to be due to a dust disk within the system. In this paper we present new astrometric observations made withExpand
Detection of ozone on Saturn's satellites Rhea and Dione
TLDR
The identification of O3 in spectra of the saturnian satellites Rhea and Dione indicates the presence of trapped O3 is thus no longer unique to Ganymede, suggesting that special circumstances may not be required for its production. Expand
The spectrum of Saturn from 1990 to 2230 cm−1 ; Abundances of AsH3, CH3D, CO, GeH4, NH3, and PH3
We have investigated the mole fractions of six gases (AsH3, CH3D, CO, GeH4, NH3, and PH3) from extensive computer modeling of a high-resolution spectrum of Saturn from 1994 to 2229 cm−1 (4.5 to 5.0Expand
Detection of Ozone on Ganymede
TLDR
An absorption band at 260 nanometers on the trailing hemisphere of Ganymede, identified as the Hartley band of ozone (O3), was measured with the Hubble Space Telescope, and apparently this O2-O3 “atmosphere” is trapped in GanyMede's surface ice, an inference consistent with the shift and broadening of the band. Expand
Detection of Abundant Carbon Monoxide in the Brown Dwarf Gliese 229B
We report the detection of carbon monoxide in the atmosphere of the brown dwarf Gliese 229B in spectra obtained at wavelengths near 4.7 μm. The spectrum is consistent with mole fractions of CO ofExpand
Unusual Features of the 1--4 Micron Spectrum of HR 4049
Moderate resolution spectra from 1.05 to 3.65 microns of the post-AGN star HR 4049 show a number of features indicative of intense mass loss and unusual circumstellar chemistry. These are deepExpand
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