Results 111 to 120 of about 1,220,192 (373)

EPIC 219388192b—An Inhabitant of the Brown Dwarf Desert in the Ruprecht 147 Open Cluster [PDF]

, 2016
We report the discovery of EPIC 219388192b, a transiting brown dwarf in a 5.3 day orbit around a member star of Ruprecht 147, the oldest nearby open cluster association, which was photometrically monitored by K2 during its Campaign 7.
G. Nowak, E. Pallé, D. Gandolfi, F. Dai, Antonino Francesco Lanza, T. Hirano, O. Barrag'an, A. Fukui, H. Bruntt, M. Endl, W. Cochran, P. Moroni, J. Prieto-Arranz, A. Kiilerich, D. Nespral, A. Hatzes, S. Albrecht, H. Deeg, J. Winn, Liang Yu, M. Kuzuhara, S. Grziwa, Alexis M. S. Smith, E. Guenther, V. V. Eylen, S. Csizmadia, M. Fridlund, J. Cabrera, P. Eigmüller, A. Erikson, J. Korth, N. Narita, M. Pätzold, H. Rauer, I. Ribas   +34 more
semanticscholar   +1 more source

Widening participation in outward student mobility: Successes, challenges and opportunities

British Educational Research Journal, EarlyView.
Abstract This article utilises data obtained through evaluation processes at Northumbria University to contribute to the emerging discourse on widening participation and outward student mobility. The rationale behind the study stems from the significant financial and non‐financial benefits associated with higher education and the UK's ongoing efforts ...
Joseph Mellors, Alejandra Vicencio
wiley   +1 more source

HCN and C2H2 in the Atmosphere of a T8.5+T9 Brown Dwarf Binary

The Astrophysical Journal Letters
T-type brown dwarfs present an opportunity to explore atmospheres teeming with molecules such as H _2 O, CH _4 , and NH _3 , which exhibit a wealth of absorption features in the mid-infrared.
Elisabeth C. Matthews, Paul Mollière, Helena Kühnle, Polychronis Patapis, Niall Whiteford, Matthias Samland, Pierre-Olivier Lagage, Rens Waters, Shang-Min Tsai, Kevin Zahnle, Manuel Guedel, Thomas Henning, Bart Vandenbussche, Olivier Absil, Ioannis Argyriou, David Barrado, Alain Coulais, Adrian M. Glauser, Goran Olofsson, John P. Pye, Daniel Rouan, Pierre Royer, Ewine F. van Dishoeck, T. P. Ray, Göran Östlin   +24 more
doaj   +1 more source

Little Red Dots or Brown Dwarfs? NIRSpec Discovery of Three Distant Brown Dwarfs Masquerading as NIRCam-selected Highly Reddened Active Galactic Nuclei

The Astrophysical Journal Letters, 2023
Cold, substellar objects such as brown dwarfs have long been recognized as contaminants in color-selected samples of active galactic nuclei (AGNs). In particular, their near- to mid-infrared colors (1–5 μ m) can closely resemble the V-shaped ( f _λ ...
Danial Langeroodi, Jens Hjorth
doaj   +1 more source

Discovery of a nearby young brown dwarf binary candidate [PDF]

, 2010
In near-infrared NaCo observations of the young brown dwarf 2MASS J0041353-562112, we discovered a companion a little less than a magnitude fainter than the primary.
A. Reiners, A. Seifahrt, Close, Cruz, Dahn, Diolaiti, Faherty, Fischer, Hawley, Lenzen, Phan Bao, Phan Bao, Reiners, Reiners, S. Dreizler, Skrutskie, West   +16 more
core   +1 more source

Single and dual RPA-CRISPR/Cas assays for point-of-need detection of Stewart's wilt pathogen (Pantoea stewartii subsp. stewartii) of corn and Maize dwarf mosaic virus. [PDF]

Pest Manag Sci
Schematic diagram of the single and dual RPA‐CRISPR/Cas12a/13a diagnostic assays for the detection of Pantoea stewartii subsp. stewartii and Maize dwarf mosaic virus. The validated assays provide a useful and sensitive molecular tool for detecting two quarantine pathogens of maize within a minimal resource framework suitable for fast‐tracking the ...
Tian Q, Zhou H, Zhao Z, Zhang Y, Zhao W, Cai L, Guo T.   +6 more
europepmc   +2 more sources

The SOPHIE search for northern extrasolar planets - IX. Populating the brown dwarf desert [PDF]

, 2016
Radial velocity planet search surveys of nearby solar-type stars have shown a strong scarcity of brown dwarf companions within similar to 5 AU. There is presently no comprehensive explanation for this lack of brown dwarf companions; therefore, increasing
P. Wilson, G. Hébrard, Nuno C. Santos, J. Sahlmann, G. Montagnier, N. Astudillo-Defru, I. Boisse, F. Bouchy, J. Rey, L. Arnold, X. Bonfils, V. Bourrier, B. Courcol, M. Deleuil, X. Delfosse, R. F. Díaz, D. Ehrenreich, T. Forveille, C. Moutou, F. Pepe, A. Santerne, D. Ségransan, S. Udry   +22 more
semanticscholar   +1 more source

An Eccentric Brown Dwarf Eclipsing an M dwarf

The Astronomical Journal, 2022
Abstract We report the discovery of an M = 67 ± 2M J brown dwarf transiting the early M dwarf TOI-2119 on an eccentric orbit (e = 0.3362 ± 0.0005) at an orbital period of 7.200861 ± 0.000005 days. We confirm the brown dwarf nature of the transiting companion using a combination of ground-based and space-based photometry
Caleb I. Cañas, Suvrath Mahadevan, Chad F. Bender, Noah Isaac Salazar Rivera, Andrew Monson, Corey Beard, Jack Lubin, Paul Robertson, Arvind F. Gupta, William D. Cochran, Connor Fredrick, Fred Hearty, Sinclaire Jones, Shubham Kanodia, Andrea S. J. Lin, Joe P. Ninan, Lawrence W. Ramsey, Christian Schwab, Guđmundur Stefánsson   +18 more
openaire   +2 more sources

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

Berichte zur Wissenschaftsgeschichte, EarlyView.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs

The Astronomical Journal
Brown dwarfs bridge the gap between stars and planets, providing valuable insight into both planetary and stellar-formation mechanisms. Yet the census of transiting brown-dwarf companions, in particular around M-dwarf stars, remains incomplete. We report
Alexander Larsen, Tera N. Swaby, Henry A. Kobulnicky, Caleb I. Cañas, Shubham Kanodia, Jessica Libby-Roberts, Andrew Monson, Arvind F. Gupta, William Cochran, Suvrath Mahadevan, Chad Bender, Scott A. Diddams, Samuel Halverson, Andrea S. J. Lin, Maxwell Moe, Joe Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Gudmundur Stefansson   +19 more
doaj   +1 more source