Results 71 to 80 of about 86,337 (303)

Physical Parameters and Properties of 20 Cold Brown Dwarfs in JWST

The Astrophysical Journal
We present a comprehensive analysis of 20 T and Y dwarfs using spectroscopy from the Near-Infrared Spectrograph (NIRSpec) CLEAR/PRISM and Mid-Infrared Instrument (MIRI) low-resolution spectrometer instruments on the James Webb Space Telescope.
Zhijun Tu, Shu Wang, Jifeng Liu
doaj   +1 more source

Periodic Radio Emission from the T8 Dwarf WISE J062309.94–045624.6

The Astrophysical Journal Letters, 2023
We present the detection of rotationally modulated, circularly polarized radio emission from the T8 brown dwarf WISE J062309.94−045624.6 between 0.9 and 2.0 GHz.
Kovi Rose, Joshua Pritchard, Tara Murphy, Manisha Caleb, Dougal Dobie, Laura Driessen, Stefan W. Duchesne, David L. Kaplan, Emil Lenc, Ziteng Wang   +9 more
doaj   +1 more source

A large spectroscopic sample of L and T dwarfs from UKIDSS LAS : peculiar objects, binaries, and space density [PDF]

, 2015
This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record [F.
A. C. Day-Jones, Allard, Allers, Andrews, B. Burningham, Baraffe, Baraffe, Basri, Bastian, Blake, Bouy, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burningham, Burningham, Burningham, Burningham, Burningham, Burrows, Burrows, Caballero, Casewell, Chabrier, Chabrier, Chiu, Clarke, Cruz, Cruz, D. J. Pinfield, Day-Jones, Day-Jones, Day-Jones, de Oliveira, de Oliveira, de Oliveira, Deacon, Deacon, Dehnen, Delorme, Dupuy, Epchtein, F. Marocco, Faherty, Faherty, Faherty, Fan, Gagné, Geballe, Gelino, Gizis, Gomes, Gorlova, Gálvez-Ortiz, H. R. A. Jones, Hawley, Hewett, J. I. Gomes, Joergens, Jones, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Knapp, Kroupa, Kroupa, Kurosawa, L. Smith, Lawrence, Leggett, Leggett, Liu, Liu, Lodieu, Lodieu, Lodieu, Lucas, Luhman, Malo, Malo, Marley, Marocco, Marocco, Marocco, Marocco, Martín, Maxted, McMahon, Metchev, Mihalas, Miller, Murray, P. W. Lucas, Pinfield, Pinfield, Press, R. L. Smart, Reid, Reylé, Robin, Salpeter, Schmidt, Scholz, Scholz, Skrutskie, Stephens, Stumpf, Sumi, Taylor, Tsuji, Vernet, Wright, York, Z. H. Zhang, Zhang, Zhang   +120 more
core   +3 more sources

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Searching for Exosatellites Orbiting L and T Dwarfs: Connecting Planet Formation to Moon Formation and Finding New Temperate Worlds [PDF]

, 2019
L-type and T-type dwarfs span the boundaries between main-sequence stars, brown dwarfs, and planetary-mass objects. For these reasons, L and T dwarfs are the perfect laboratories for exploring the relationship between planet formation and moon formation,
Burgasser, Adam, Faherty, Jacqueline, Gagliuffi, Daniella Bardalez, Muirhead, Philip S., Radigan, Jacqueline, Skinner, Julie N., Stephens, Denise, Tamburo, Patrick, Theissen, Christopher, Triaud, Amaury   +9 more
core   +2 more sources

The First Infrared Parallaxes for T-Dwarfs [PDF]

Symposium - International Astronomical Union, 2003
We present first results from the first parallax program to use an infrared camera to target the observation of a sample of methane T-dwarfs, using the ESO 3.5m NTT.
C. G. Tinney, A. Burgasser, J. D. Kirkpatrick   +2 more
openaire   +1 more source

The Future of Research in Cognitive Robotics: Foundation Models or Developmental Cognitive Models?

Advanced Robotics Research, EarlyView.
Research in cognitive robotics founded on principles of developmental psychology and enactive cognitive science would yield what we seek in autonomous robots: the ability to perceive its environment, learn from experience, anticipate the outcome of events, act to pursue goals, and adapt to changing circumstances without resorting to training with ...
David Vernon
wiley   +1 more source

Substellar Companions to Main Sequence Stars: No Brown Dwarf Desert at Wide Separations

, 2001
We use three field L and T dwarfs which were discovered to be wide companions to known stars by the Two Micron All-Sky Survey (2MASS) to derive a preliminary brown dwarf companion frequency.
Adam Burgasser, Bouvier J., David G. Monet, Duquennoy A., Goldman B., Halbwachs J. L., I. Neill Reid, J. Davy Kirkpatrick, James Liebert, John C. Wilson, John E. Gizis   +10 more
core   +2 more sources

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

, 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, B. Burningham, Baraffe, Basri, Bihain, Bouy, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burningham, Caballero, Caballero, Casali, Casewell, Close, Cutri, D. J. Pinfield, Deacon, Dye, Geballe, Genzel, Golimowski, Hambly, Hawley, Hewett, Hodapp, Jameson, Jameson, Kendall, Kirkpatrick, Kirkpatrick, Lawrence, Leggett, Liu, Lodieu, Lodieu, Lodieu, Lodieu, Lodieu, Marley, Martín, Martín, N. C. Hambly, N. Lodieu, Nakajima, Pinfield, Pinsonneault, Rebolo, Reid, Robichon, Salpeter, Strauss, Tinney, Tokunaga, Tsuji, Tsvetanov, Vrba, Warren, Warren, Zapatero Osorio, Zapatero Osorio, Zapatero Osorio   +66 more
core   +2 more sources

AutomataGPT: Transformer‐Based Forecasting and Ruleset Inference for Two‐Dimensional Cellular Automata

Advanced Science, EarlyView.
We introduce AutomataGPT, a generative pretrained transformer (GPT) trained on synthetic spatiotemporal data from 2D cellular automata to learn symbolic rules. Demonstrating strong performance on both forward and inverse tasks, AutomataGPT establishes a scalable, domain‐agnostic framework for interpretable modeling, paving the way for future ...
Jaime A. Berkovich, Noah S. David, Markus J. Buehler   +2 more
wiley   +1 more source