Results 61 to 70 of about 12,083,844 (366)
An irradiated brown-dwarf companion to an accreting white dwarf [PDF]
Nature, 2016 Brown dwarfs and giant planets orbiting close to a host star are subjected to significant irradiation that can modify the properties of their atmospheres. In order to test the atmospheric models that are used to describe these systems, it is necessary to obtain accurate observational estimates of their physical properties (masses, radii, temperatures ...
S. P. Littlefair +10 more
openaire +9 more sources
49 new T dwarfs identified using methane imaging [PDF]
, 2015 We present the discovery of 49 new photometrically classified T dwarfs from the combination of large infrared and optical surveys combined with follow-up Telescopio Nazionale Galileo photometry.
C. Cardoso +13 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 Brown dwarf spectra offer vital testbeds for our understanding of the chemical and physical processes that sculpt substellar atmospheres. Recently, atmospheric retrieval approaches have been successfully applied to low-resolution ( R ∼ 100) spectra of L,
Callie E. Hood +3 more
doaj +1 more source
WEATHER ON OTHER WORLDS. III. A SURVEY FOR T DWARFS WITH HIGH-AMPLITUDE OPTICAL VARIABILITY [PDF]
, 2014 We have monitored 12 T dwarfs with the Kitt Peak 2.1 m telescope using an F814W filter (0.7–0.95 μm) to place in context the remarkable 10%–20% variability exhibited by the nearby T dwarf Luhman 16B in this wavelength regime.
A. Heinze, S. Metchev, K. Kellogg
semanticscholar +1 more source
Symposium - International Astronomical Union, 1998 We review the observational evidences for tidal dwarf galaxies, a class of small galaxies formed out of the tidal debris of collisions between massive galaxies. Tidal dwarfs are found far from the interacting parent galaxies, associated with massive clouds of atomic hydrogen located at the tip of long tidal tails.
I. F. Mirabel +2 more
openaire +4 more sources
CONSTRAINTS ON THE BINARY PROPERTIES OF MID- TO LATE T DWARFS FROM HUBBLE SPACE TELESCOPE WFC3 OBSERVATIONS [PDF]
, 2014 We used Hubble Space Telescope/Wide Field Camera 3 (WFC3) observations of a sample of 26 nearby (⩽20 pc) mid- to late T dwarfs to search for cooler companions and measure the multiplicity statistics of brown dwarfs (BDs).
M. Aberasturi +6 more
semanticscholar +1 more source
Primeval very low-mass stars and brown dwarfs - VI. Population properties of metal-poor degenerate brown dwarfs [PDF]
, 2019 © 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.We presented 15 new T dwarfs that were selected from UKIRT Infrared Deep Sky Survey, Visible and Infrared Survey Telescope for Astronomy, and Wide ...
Allard, F. +6 more
core +4 more sources
The brown dwarf atmosphere monitoring (BAM) project - I. The largest near-IR monitoring survey of L and T dwarfs [PDF]
, 2014 Using SofI on the 3.5m New Technology Telescope, we have conducted an extensive near-infrared monitoring survey of an unbiased sample of 69 brown dwarfs spanning the L0 and T8 spectral range, with at least one example of each spectral type.
Paul A. Wilson +3 more
semanticscholar +1 more source
Extending the Canada-France Brown Dwarf Survey to the near infrared
EPJ Web of Conferences, 2011 We present the first results of the Canada-France Brown Dwarfs Survey-InfraRed, hereafter CFBDSIR, our near infrared extension to the optical wide field survey CFBDS.
Bertin E. +8 more
doaj +1 more source
Hawaii quasar and T dwarf survey. I. Method and discovery of faint field ultracool dwarfs [PDF]
, 2010 The Hawaii Quasar and T dwarf survey (HQT Survey) is a wide-field, red optical survey carried out with the Suprime-Cam mosaic CCD camera on the 8.2 m Subaru telescope. The HQT survey is designed to search for low-luminosity (M_(AB1450) 5.7) as well as
Capak, Peter L. +5 more
core +2 more sources