Results 71 to 80 of about 12,278,686 (380)

Identifying nearby field T dwarfs in the UKIDSS Galactic Clusters Survey [PDF]

open access: yes, 2008
‘The definitive version is available at www3.interscience.wiley.com '. Copyright Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2008.14384.xWe present the discovery of two new late-T dwarfs identified in the UKIRT Infrared Deep Sky Survey (UKIDSS ...
Allard   +66 more
core   +2 more sources

49 new T dwarfs identified using methane imaging [PDF]

open access: yes, 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

An irradiated brown-dwarf companion to an accreting white dwarf [PDF]

open access: yesNature, 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

WEATHER ON OTHER WORLDS. III. A SURVEY FOR T DWARFS WITH HIGH-AMPLITUDE OPTICAL VARIABILITY [PDF]

open access: yes, 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

L and T dwarfs in the Hyades and Ursa Major moving groups [PDF]

open access: yesMon.Not.Roy.Astron.Soc.Lett.378:L24-L28,2007, 2007
We have used the moving cluster method to identify three L dwarfs and one T dwarf in the Ursa Major/Sirius moving group (age 400 Myr). Five L dwarfs and two T dwarfs are found to belong to the Hyades moving group (age 625 Myr). These L and T dwarfs define 400- and 625- Myr empirical isochrones, assuming that they have the same age.
arxiv   +1 more source

Primeval very low-mass stars and brown dwarfs - VI. Population properties of metal-poor degenerate brown dwarfs [PDF]

open access: yes, 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   +3 more sources

CONSTRAINTS ON THE BINARY PROPERTIES OF MID- TO LATE T DWARFS FROM HUBBLE SPACE TELESCOPE WFC3 OBSERVATIONS [PDF]

open access: yes, 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

Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs [PDF]

open access: yesThe Astronomical Journal, 2002
48 pages, including 7 figures and 6 tables.
Richard L. Walker   +18 more
openaire   +3 more sources

The brown dwarf atmosphere monitoring (BAM) project - I. The largest near-IR monitoring survey of L and T dwarfs [PDF]

open access: yes, 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

Structurally Defined Water‐Soluble Metallofullerene Derivatives towards Biomedical Applications

open access: yesAngewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023
A modular metallobuckytrio (MBT) platform provides a family of structurally defined, water‐soluble metallofullerene derivatives that can safely carry rare‐earth elements in tailorable molecules, showing promise in biomedicines including MRI contrast agents and photosensitizers. Abstract Endohedral metallofullerenes (EMFs) are excellent carriers of rare‐
Yanbang Li   +15 more
wiley   +1 more source

Home - About - Disclaimer - Privacy