Results 141 to 150 of about 2,485,700 (388)

BANYAN. III. RADIAL VELOCITY, ROTATION, AND X-RAY EMISSION OF LOW-MASS STAR CANDIDATES IN NEARBY YOUNG KINEMATIC GROUPS [PDF]

, 2014
Based on high-resolution spectra obtained with PHOENIX at Gemini-South, CRIRES at VLT-UT1, and ESPaDOnS at the Canada–France–Hawaii Telescope, we present new measurements of the radial and projected rotational velocities of 219 low-mass stars. The target
L. Malo, É. Artigau, R. Doyon, D. Lafrèniere, L. Albert, J. Gagn'e   +5 more
semanticscholar   +1 more source

Trans‐Conductive Melt Pool Scaling and its Implications for Parameter Transfer in Laser Powder Bed Fusion for Metals with High Thermal Diffusivity

Advanced Engineering Materials, EarlyView.
Developing process parameters for the laser‐based Powder Bed Fusion of metals can be a tedious task. Based on melt pool depth, the process parameters are transferable to different laser scan speeds. For this, understanding the melt pool scaling behavior is essential, particularly for materials with high thermal diffusivity, as a change in scaling ...
Markus Döring, Matthias Gehring, Michael Schmidt   +2 more
wiley   +1 more source

Analysis of Temperature and Stress Distribution on the Bond Properties of Hybrid Tailored Formed Components

Advanced Engineering Materials, EarlyView.
Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek, Eduard Ortlieb, Caner‐Veli Ince, Julius Peddinghaus, Hendrik Wester, Johanna Uhe, Annika Raatz, Kai Brunotte   +7 more
wiley   +1 more source

An astro-comb calibrated solar telescope to search for the radial velocity signature of Venus

Astronomical Telescopes + Instrumentation, 2016
We recently demonstrated sub-m/s sensitivity in measuring the radial velocity (RV) between the Earth and Sun using a simple solar telescope feeding the HARPS-N spectrograph at the Italian National Telescope, which is calibrated with a green astro-comb ...
D. Phillips, A. Glenday, X. Dumusque, N. Buchschacher, A. Cameron, M. Cecconi, D. Charbonneau, R. Cosentino, A. Ghedina, R. Haywood, D. Latham, Chih-Hao Li, M. Lodi, C. Lovis, E. Molinari, F. Pepe, D. Sasselov, A. Szentgyorgyi, S. Udry, R. Walsworth   +19 more
semanticscholar   +1 more source

RADIAL VELOCITY OBSERVATIONS AND LIGHT CURVE NOISE MODELING CONFIRM THAT KEPLER-91b IS A GIANT PLANET ORBITING A GIANT STAR [PDF]

, 2014
Kepler-91b is a rare example of a transiting hot Jupiter around a red giant star, providing the possibility to study the formation and composition of hot Jupiters under different conditions compared to main-sequence stars.
T. Barclay, M. Endl, D. Huber, D. Foreman-Mackey, W. Cochran, P. Macqueen, J. Rowe, E. Quintana   +7 more
semanticscholar   +1 more source

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

Advanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong, Zhangbin Ji, Luke Haworth, Yihao Guo, Jaime del Moral, Stefan Jacob, Ana Borras, Agustin R. Gonzalez‐Elipe, Jikai Zhang, Jian Zhou, Glen McHale, Yong‐Qing Fu   +11 more
wiley   +1 more source

Miniature Exoplanet Radial Velocity Array I: design, commissioning, and early photometric results [PDF]

, 2014
. The Miniature Exoplanet Radial Velocity Array (MINERVA) is a U.S.-based observational facility dedicated to the discovery and characterization of exoplanets around a nearby sample of bright stars.
J. Swift, M. Bottom, J. Johnson, J. Wright, N. McCrady, R. Wittenmyer, P. Plavchan, R. Riddle, P. Muirhead, Erich Herzig, J. Myles, C. Blake, J. Eastman, T. Beatty, S. Barnes, Steven R. Gibson, Brian Lin, Ming Zhao, P. Gardner, E. Falco, S. Criswell, C. Nava, C. Robinson, D. Sliski, Richard L. Hedrick, K. Ivarsen, A. Hjelstrom, J. de Vera, A. Szentgyorgyi   +28 more
semanticscholar   +1 more source

Static and Dynamic Behavior of Novel Y‐Shaped Sandwich Beams Subjected to Compressive Loadings: Integration of Supervised Learning and Experimentation

Advanced Engineering Materials, EarlyView.
In this study, the mechanical response of Y‐shaped core sandwich beams under compressive loading is investigated, using deep feed‐forward neural networks (DFNNs) for predictive modeling. The DFNN model accurately captures stress–strain behavior, influenced by design parameters and loading rates.
Ali Khalvandi, Saeed Kamarian, Mahdi Bodaghi, Saeed Saber‐Samandari, Jung‐il Song   +4 more
wiley   +1 more source

An RTK UAV-Based Method for Radial Velocity Validation of Weather Radar

Remote Sensing
The quality of weather radar affects the reliability and effectiveness of monitoring severe convective weather. Therefore, rigorous calibration and validation are the foundation for the quantitative application of weather radar.
Yubao Chen, Lu Li, Fei Ye, Boshi Kang, Xiaopeng Wang, Zhichao Bu, Moyan Zhu, Qian Yang, Nan Shao, Jianyun Zhang   +9 more
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source