Results 101 to 110 of about 282,229 (301)
The Trigonometric Parallax of the Brown Dwarf Planetary System 2MASSW J1207334-393254
, 2007 We have measured a trigonometric parallax to the young brown dwarf 2MASSW J1207334-393254. The distance [54.0 (+3.2,-2.8) pc] and space motion confirm membership in the TW Hydrae Association. The primary is a ~25 M_jup brown dwarf.
John E. Gizis +4 more
core +1 more source
Do “isolated” planetary mass objects orbit mirror stars?
Astroparticle Physics, 2002 We propose that the ``isolated'' planetary mass objects observed by Zapatero Osorio et al in the $ $ Orionis cluster might actually be in orbit around invisible stellar mass companions such as mirror stars. Mirror matter is expected to exist if parity is an unbroken symmetry of nature.
Foot, R. +2 more
openaire +2 more sources
Advanced Materials Technologies, EarlyView.In this study, we report a resistive‐type strain sensor fabricated using single‐walled CNTs, are used layer using the pray technique to deposit as conductive, and UV‐resin was spin‐coated as a protection layer. The sensor functioned in harsh temperature variation conditions from −50°C to 125°C without deterioration.
Jagan Singh Meena +4 more
wiley +1 more source
Analyses of Multiple Balmer Emission Lines from Accreting Brown Dwarfs and Very Low Mass Stars
The Astronomical JournalA planetary growth rate, i.e., the mass accretion rate, is a fundamental parameter in planet formation, as it determines a planet's final mass. Planetary mass accretion rates have been estimated using hydrogen lines, based on the models originally ...
Jun Hashimoto, Yuhiko Aoyama
doaj +1 more source
Development of the low backlash planetary gearbox for humanoid robots [PDF]
FME Transactions, 2017 The low backlash planetary gearbox as a substitute for a harmonic drive in humanoid robotics, is presented in this paper. After analysis of the contemporary designs of the low backlash coaxial toothed gearboxes, a concept of planetary gearbox with taper ...
Penčić Marko +2 more
doaj
, 2013 The evolution of planetary systems is intimately linked to the evolution of their host star. Our understanding of the whole planetary evolution process is based on the large planet diversity observed so far.
Barbieri, M. +10 more
core +1 more source
Advanced Materials Technologies, EarlyView.This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee +4 more
wiley +1 more source
Architectures of Planetary Systems. II. Trends with Host Star Mass and Metallicity
The Astronomical JournalThe current census of planetary systems displays a wide range of architectures. Extending earlier work, this paper investigates the correlation between our classification framework for these architectures and host stellar properties.
Alex R. Howe +2 more
doaj +1 more source
Brown dwarfs forming in discs: Where to look for them?
EPJ Web of Conferences, 2011 A large fraction of the observed brown dwarfs may form by gravitational fragmentation of unstable discs. This model reproduces the brown dwarf desert, and provides an explanation for the existence of planetary-mass objects and for the binary properties ...
Stamatellos D., Whitworth A.
doaj +1 more source
Shaping Carbon Nitrides for Advanced Macrostructures
Advanced Materials Technologies, EarlyView.This review examines how carbon nitride can be shaped through a range of printing and interfacial assembly methods. By bringing together additive manufacturing and liquid–liquid structuring concepts, carbon nitride is moving beyond its traditional powder‐based photocatalyst form toward digitally designed robust macroscale architectures with high design
Simona Baluchová, Baris Kumru
wiley +1 more source