Results 51 to 60 of about 86,337 (303)

Physical Parameters of Two Very Cool T Dwarfs [PDF]

open access: yesThe Astrophysical Journal, 2007
Accepted for publication in the Ap. J. 35 pages, including 12 figures (10 in color)
Saumon, D.   +10 more
openaire   +2 more sources

The Coldest Known Y Dwarfs: Estimates of Their Effective Temperatures

open access: yesThe Astrophysical Journal
For a decade there has been a factor of 2.5 gap in luminosity between the 275 K WISE J085510.83-071442.5 and all other Y dwarfs, with T _eff  ≳ 350 K. Recently, three objects were found that may fall in this gap.
S. K. Leggett
doaj   +1 more source

Weather on Other Worlds. II. Survey Results: Spots Are Ubiquitous on L and T Dwarfs

open access: yes, 2014
We present results from the "Weather on Other Worlds" Spitzer Exploration Science program to investigate photometric variability in L and T dwarfs, usually attributed to patchy clouds.
Apai, Dániel   +9 more
core   +1 more source

37 NEW T-TYPE BROWN DWARFS IN THE CANADA-FRANCE BROWN DWARFS SURVEY

open access: yesThe Astronomical Journal, 2011
The Canada-France Brown Dwarfs Survey is an i'- and z'-band survey realized with MegaCam at the Canada-France-Hawaii Telescope that covers a surface area of 780 deg2. Image analysis is now completed while J-band follow-up campaigns are ~90% done. The survey identified about 70 T dwarf candidates, of which 43 now have near-infrared spectra obtained with
Albert, L.   +6 more
openaire   +4 more sources

Infrared Photometry of Late‐M, L, and T Dwarfs [PDF]

open access: yesThe Astrophysical Journal, 2002
We present ZJHKL'M' photometry of a sample of 58 late-M, L, and T dwarfs, most of which are identified from the Sloan Digital Sky Survey and the Two Micron All-Sky Survey. Near-infrared spectra and spectral classifications for most of this sample are presented in a companion paper by Geballe et al.
Leggett, S K   +18 more
openaire   +3 more sources

Why human connection is the true metric of research success

open access: yesFEBS Open Bio, EarlyView.
Human‐centred mentorship can be shaped by mentor attributes, actions, intrinsic drive and career ambition. Drawing on reflections across Singapore and France, as well as workshop insights from FEBS‐IUBMB ENABLE 2024, this article shows that human‐centred mentorship creates the conditions for sustainable growth, well‐being and retention in research ...
Timothy Lin Yun Tan   +3 more
wiley   +1 more source

The 2MASS Wide-Field T Dwarf Search. II. Discovery of Three T Dwarfs in the Southern Hemisphere [PDF]

open access: yesThe Astronomical Journal, 2003
We present the discovery of three new Southern Hemisphere T dwarfs identified in the Two Micron All Sky Survey. These objects, 2MASS 0348-6022, 2MASS 0516-0445, and 2MASS 2228-4310, have classifications T7, T5.5, and T6.5, respectively. Using linear absolute magnitude/spectral type relations derived from T dwarfs with measured parallaxes, we estimate ...
Burgasser, Adam J.   +2 more
openaire   +2 more sources

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu   +10 more
wiley   +1 more source

Exploration of the Near-infrared Colors of Cold Y Dwarfs from the Ground and Space

open access: yesThe Astrophysical Journal
The James Webb Space Telescope (JWST) has provided critical mid-infrared data for cold brown dwarfs. It has also provided low-resolution near-infrared spectra, and for faint sources these are the first spectra at these wavelengths.
S. K. Leggett   +2 more
doaj   +1 more source

Discovery of Four High Proper Motion L Dwarfs, Including a 10 pc L Dwarf at the L/T Transition [PDF]

open access: yes, 2013
We discover four high proper motion L dwarfs by comparing the Wide-field Infrared Survey Explorer (WISE) to the Two Micron All Sky Survey (2MASS). WISE J140533.32+835030.5 is an L dwarf at the L/T transition with a proper motion of 0.85+/-0.02" yr^-1 ...
Castro, Philip J.   +7 more
core   +2 more sources

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