Results 71 to 80 of about 5,171 (308)

Disks, accretion and outflows of brown dwarfs [PDF]

, 2013
Characterization of the properties of young brown dwarfs are important to constraining the formation of objects at the extreme low-mass end of the initial mass function.
Joergens, V., A. Natta, Rodriguez-Ledesma, M. V., Alcalá, J.M., M. Gully‐Santiago, A. Sicilia‐Aguilar, J. Alcalá, Rodriguez-Ledesma, M.V., Whelan, Emma, K. Biazzo, Henning, Th., Pascucci, I., Herczeg, G.J., Sicilia-Aguilar, A.; id_orcid, Sicilia-Aguilar, A., M.V. Rodríguez‐Ledesma, Whelan, E., Herczeg, G., Tottle, J., Biazzo, K., Gully-Santiago, M., S. Wolf, I. Pascucci, Liu, Y., Rigliaco, E., G. Herczeg, E. Rigliaco, G. Costigan, V. Joergens, E. Whelan, Th. Henning, Natta, A., Henning, Th, Wolf, S., Alcala, J., Y. Liu, Costigan, G., J. Tottle   +37 more
core   +1 more source

Reweighting Scheme for the Calculation of Grand‐Canonical Expectation Values in Quantum Monte Carlo Simulations With a Fermion Sign Problem

Contributions to Plasma Physics, EarlyView.
ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann, Jan Vorberger, Tobias Dornheim   +2 more
wiley   +1 more source

A New Brown Dwarf Orbiting an M Star and an Investigation of the Eccentricity Distribution of Transiting Long-period Brown Dwarfs

The Astrophysical Journal Letters
The orbital eccentricities of brown dwarfs encode valuable information on their formation and evolution history, providing insights into whether they resemble giant planets or stellar binaries.
Tianjun Gan, Charles Cadieux, Shigeru Ida, Sharon X. Wang, Shude Mao, Zitao Lin, Keivan G. Stassun, Adam J. Burgasser, Steve B. Howell, Catherine A. Clark, Ivan A. Strakhov, Paul Benni, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Luc Arnold, Étienne Artigau, David Charbonneau, Karen A. Collins, Neil J. Cook, Zoë L. de Beurs, Sarah J. Deveny, John P. Doty, René Doyon, Colin Littlefield, Tyler Pritchard, Gabrielle Ross, Avi Shporer, Christopher R. Theissen, Benjamin M. Tofflemire, Andrew Vanderburg, David Watanabe   +34 more
doaj   +1 more source

Brown dwarfs as Galactic chronometers [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractBrown dwarfs are natural clocks, cooling and dimming over time due to insufficient core fusion. They are also numerous and present in nearly all Galactic environments, making them potentially useful chronometers for a variety of Galactic studies.
openaire   +2 more sources

Environmental and local habitat variables as predictors of trophic interactions in subtidal rocky reefs along the SE Pacific coast

Ecography, EarlyView.
Temperature generally drives latitudinal patterns in the strength of trophic interactions, including consumption rates. However, local community and other environmental conditions might also affect consumption, disrupting latitudinal gradients, which results in complex large‐scale patterns.
Catalina A. Musrri, Alistair G. B. Poore, Oscar Pino, Nicolás Riquelme, Wolfgang B. Stotz, Fadia Tala, Martin Thiel   +6 more
wiley   +1 more source

Diversity of Cold Worlds: A Near-complete Spectral Energy Distribution for 2MASS J04151954−0935066 Using JWST

The Astrophysical Journal
We present a near-complete spectral energy distribution (SED) for an extrasolar world: the T8 brown dwarf 2MASS J04151954−0935066. Spanning from optical to mid-infrared (0.7–20.4 μ m) wavelengths, the SED for this substellar atmosphere is constructed ...
Sherelyn Alejandro Merchan, Jacqueline K. Faherty, Genaro Suárez, Kelle L. Cruz, Adam J. Burgasser, Jonathan Gagné, Callie E. Hood, Eileen C. Gonzales, Daniella C. Bardalez Gagliuffi, Jolie L’Heureux, Johanna M. Vos, Adam C. Schneider, Aaron M. Meisner, Caroline Morley, J. Davy Kirkpatrick, Federico Marocco, Rocio Kiman, Charles A. Beichman, Ben Burningham, Dan Caselden, Peter R. Eisenhardt, Christopher R. Gelino, Ehsan Gharib-Nezhad, Marc J. Kuchner, Brianna Lacy, Austin Rothermich, Melanie J. Rowland, Niall Whiteford   +27 more
doaj   +1 more source

Proso Millet (Panicum miliaceum): Nutritional Composition, Functional Attributes, and Health Implications

Future Postharvest and Food, EarlyView.
A nutrient‐dense grain, proso millet is well‐known for its high protein content and vital amino acids. It is high in fiber, vitamins, and minerals and has many health advantages, including promoting heart health, enhancing digestion, and helping with weight management.
Sangeeta Yadav, Pratiksha Singh, Mazia Ahmed, Pinki Saini   +3 more
wiley   +1 more source

The formation of brown dwarfs [PDF]

, 2005
We review four mechanisms for forming brown dwarfs: (i) turbulent fragmentation (producing very low-mass prestellar cores); (ii) gravitational instabilities in discs; (iii) dynamical ejection of stellar embryos from their placental cores; and (iv) photo ...
Goodwin, S.P., Goodwin, S. P., A. P. Whitworth, Whitworth, Anthony Peter, S.P. Goodwin, Whitworth, A.P.   +5 more
core   +1 more source

Effectiveness of integrated shrub management and restoration techniques for rehabilitating shrub‐encroached rangelands of South Africa

Grassland Research, EarlyView.
Herbaceous plant recovery following shrub clearing and reseeding in the rangelands of Peddie, Eastern Cape of South Africa. CTL, control; CO, cutting only; CR, cutting and reseeding; UPO, uprooting only; UPR, uprooting and reseeding. Abstract Background Shrub encroachment (SE) drives rangeland degradation, threatening biodiversity and forage ...
Monelisi Makanya, Khanyisa Jama, Mthunzi Mndela, Sinalo Malindie   +3 more
wiley   +1 more source

JADES: An Abundance of Ultradistant T and Y Dwarfs in Deep Extragalactic Data

The Astrophysical Journal
Ultracool T ( T _eff  ≈ 500–1200 K) and Y dwarfs ( T _eff ⪅ 500 K) have historically been found only a few hundred parsecs from the Sun. The sensitivity and wavelength coverage of the NIRCam instrument on board the James Webb Space Telescope offer a ...
Kevin N. Hainline, Jakob M. Helton, Brittany E. Miles, Jarron Leisenring, Mark S. Marley, Sagnick Mukherjee, Nicholas F. Wogan, Andrew J. Bunker, Benjamin D. Johnson, Roberto Maiolino, Marcia Rieke, Pierluigi Rinaldi, Brant Robertson, Fengwu Sun, Sandro Tacchella, Christina C. Williams, Christopher N. A. Willmer   +16 more
doaj   +1 more source