Results 41 to 50 of about 71,830 (288)

A Study of the Diverse T Dwarf Population Revealed by WISE [PDF]

open access: yes, 2012
We report the discovery of 87 new T dwarfs uncovered with the Wide-field Infrared Survey Explorer (WISE) and three brown dwarfs with extremely red near-infrared colors that exhibit characteristics of both L and T dwarfs.
Bailey, Vanessa   +25 more
core   +1 more source

The ultracool-field dwarf luminosity-function and space density from the Canada-France Brown Dwarf Survey [PDF]

open access: yes, 2010
Context. Thanks to recent and ongoing large scale surveys, hundreds of brown dwarfs have been discovered in the last decade. The Canada-France Brown Dwarf Survey is a wide-field survey for cool brown dwarfs conducted with the MegaCam camera on the Canada-
Allen   +73 more
core   +6 more sources

Three New Cool Brown Dwarfs Discovered with the Wide-field Infrared Survey Explorer (WISE) and an Improved Spectrum of the Y0 Dwarf WISE J041022.71+150248.4 [PDF]

open access: yes, 2014
As part of a larger search of Wide-field Infrared Survey Explorer (WISE) data for cool brown dwarfs with effective temperatures less than 1000 K, we present the discovery of three new cool brown dwarfs with spectral types later than T7.
Cushing, Michael C.   +5 more
core   +3 more sources

An Improved Near-infrared Spectrum of the Archetype Y Dwarf WISEP J182831.08+265037.8 [PDF]

open access: yesThe Astrophysical Journal, 2021
Abstract We present a Hubble Space Telescope/Wide-Field Camera 3 near-infrared spectrum of the archetype Y dwarf WISEP 182831.08+265037.8. The spectrum covers the 0.9–1.7 μm wavelength range at a resolving power of λ/Δλ ≈ 180 and is a significant improvement over the previously published spectrum because it covers a broader wavelength ...
Michael C. Cushing   +10 more
openaire   +3 more sources

Near-Infrared Spectroscopy of the Y0 WISEP J173835.52+273258.9 and the Y1 WISE J035000.32-565830.2: the Importance of Non-Equilibrium Chemistry [PDF]

open access: yes, 2016
We present new near-infrared spectra, obtained at Gemini Observatory, for two Y dwarfs: WISE J035000.32-565830.2 (W0350) and WISEP J173835.52+273258.9 (W1738).
Amundsen, D. S.   +7 more
core   +5 more sources

Hubble Space Telescope Spectroscopy of Brown Dwarfs Discovered with the Wide-field Infrared Survey Explorer [PDF]

open access: yes, 2015
We present a sample of brown dwarfs identified with the {\it Wide-field Infrared Survey Explorer} (WISE) for which we have obtained {\it Hubble Space Telescope} ({\it HST}) Wide Field Camera 3 (WFC3) near-infrared grism spectroscopy.
Cushing, Michael C.   +9 more
core   +4 more sources

A wide deep infrared look at the Pleiades with UKIDSS: new constraints on the substellar binary fraction and the low mass IMF [PDF]

open access: yes, 2007
We present the results of a deep wide-field near-infrared survey of 12 square degrees of the Pleiades conducted as part of the UKIDSS Deep Infrared Sky Survey (UKIDSS) Galactic Cluster Survey (GCS).
Adams   +87 more
core   +11 more sources

New H2 collision-induced absorption and NH3 opacity and the spectra of the coolest brown dwarfs [PDF]

open access: yes, 2012
We present new cloudy and cloudless model atmospheres for brown dwarfs using recent ab initio calculations of the line list of ammonia (NH3) and of the collision-induced absorption of molecular hydrogen (H2).
Ackerman   +69 more
core   +2 more sources

Keck NIRES Spectral Standards for L, T, and Y Dwarfs

open access: yesResearch Notes of the AAS, 2022
Abstract We present medium-resolution (λ/Δλ = 2700), near-infrared spectral standards for field L0–L2, L4, and L7–Y0 dwarfs obtained with the Near-Infrared Echellette Spectrometer on the Keck II 10 m telescope. These standards allow for detailed spectral comparative analysis of cold brown dwarfs discovered through ongoing ground-based ...
Christopher A. Theissen   +16 more
openaire   +2 more sources

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