Results 41 to 50 of about 83,683 (249)
A JWST Survey for Planetary Mass Brown Dwarfs in IC 348
The Astronomical Journal, 2023 We have obtained images of the center of the star-forming cluster IC 348 with the James Webb Space Telescope and have identified brown dwarf candidates based on their photometry and point-like flux profiles. Low-resolution spectroscopy has been performed
K. L. Luhman +7 more
doaj +1 more source
Hubble Space Telescope NICMOS Observations of T Dwarfs: Brown Dwarf Multiplicity and New Probes of the L/T Transition [PDF]
, 2006 We present the results of a Hubble Space Telescope NICMOS imaging survey of 22 T-type field brown dwarfs. Five are resolved as binary systems with angular separations of 0"05-0"35, and companionship is established on the basis of component F110W-F170M ...
Adam Burrows +13 more
core +4 more sources
NICMOS Kernel-phase Interferometry. II. Demographics of Nearby Brown Dwarfs
The Astronomical Journal, 2023 Star formation theories have struggled to reproduce binary brown dwarf population demographics (e.g., frequency, separation, and mass ratio). Kernel-phase interferometry is sensitive to companions at separations inaccessible to classical imaging ...
Samuel M. Factor, Adam L. Kraus
doaj +1 more source
Searching for benchmark systems containing ultra-cool dwarfs and white dwarfs
EPJ Web of Conferences, 2013 We have used the 2MASS all-sky survey and WISE to look for ultracool dwarfs that are part of multiple systems containing main sequence stars. We cross-matched L dwarf candidates from the surveys with Hipparcos and Gliese stars, finding two new systems ...
Pinfield D.J., Gomes J.I.
doaj +1 more source
, 2008 We report proper motion measurements for 427 late-type M, L and T dwarfs, 332 of which have been measured for the first time. Combining these new proper motions with previously published measurements yields a sample of 841 M7-T8 dwarfs.
Ackerman +141 more
core +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 +5 more sources
L Dwarf Variability:I‐Band Observations
The Astrophysical Journal, 2002 42 pages, 14 figures, minor corrections for typos and Figure 12, to appear in ApJ, v577, September 20 ...
Gelino, Christopher R. +4 more
openaire +2 more sources
, 2008 Using a large sample of optical spectra of late-type dwarfs, we identify a subset of late-M through L field dwarfs that, because of the presence of low-gravity features in their spectra, are believed to be unusually young.
Adam J. Burgasser +24 more
core +1 more source
Low Luminosity Companions to White Dwarfs [PDF]
, 2005 This paper presents results of a near-infrared imaging survey for low mass stellar and substellar companions to white dwarfs. A wide field proper motion survey of 261 white dwarfs was capable of directly detecting companions at orbital separations ...
Alexander J. +20 more
core +4 more sources
Why human connection is the true metric of research success
FEBS 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