Results 31 to 40 of about 178,075 (291)

Finding non-eclipsing binaries through pulsational phase modulation

EPJ Web of Conferences, 2015
We present a method for finding binaries among pulsating stars that were observed by the Kepler Mission. We use entire four-year light curves to accurately measure the frequencies of the strongest pulsation modes, then track the pulsation phases at those
Murphy Simon J., Bedding Timothy R., Shibahashi Hiromoto, Kurtz Donald W., Kjeldsen Hans   +4 more
doaj   +1 more source

Galactic Open Clusters [PDF]

, 2005
The study of open clusters has a classic feel to it since the subject predates anyone alive today. Despite the age of this topic, I show via an ADS search that its relevance and importance in astronomy has grown faster in the last few decades than ...
von Hippel, Ted
core   +2 more sources

Nanoscale Mapping of Plasmonic Charge Transport in Nano‐Resonators Based on Resistive Switching Materials

Advanced Functional Materials, EarlyView.
In this strategy, a conductive nano‐probe is employed to induce nanoscale phase transitions and map the nanoscale conductivity and trap density of GST films. By utilizing the contrasting properties of phase‐change states, nano‐resonators are fabricated that exhibit plasmonic conduction and dramatically different transport characteristics.
Sunwoo Bang, Seunghyo Park, Shashank Shekhar, Yuhyeon Oh, Seunghun Hong   +4 more
wiley   +1 more source

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +1 more source

X- and Gamma-ray Studies of Cas A: Exposing Core Collapse to the Core

, 2003
In this review of X-ray and gamma-ray observations of Cas A, evidence is discussed that Cas A was a Type Ib supernova of a Wolf-Rayet star with a main sequence mass between 22-25 Msun, that exploded after stellar wind loss had reduced its mass to ~6 Msun.
Arnett, Ashworth, Chan, Chevalier, Delaney, Diehl, Fesen, Fesen, Fesen, Garcia-Segura, Gotthelf, Hamuy, Hashimoto, Heger, Hughes, Hwang, Iyudin, Jacco Vink, Jean, Kamper, Kifonidis, Laming, Lawrence, Markert, Massey, Meynet, Milne, Milne, Mochizuki, Mochizuki, Nagataki, Park, Rasmussen, Reed, Ruiz-Lapuente, Ryle, Stephenson, Tananbaum, Thorstensen, Vink, Vink, Vink, Vink, Willingale, Willingale, Woosley, Woosley   +46 more
core   +1 more source

The Solar--Stellar Connection [PDF]

, 2004
Stars have proven to be surprisingly prolific radio sources and the added sensitivity of the Square Kilometer Array will lead to advances in many directions.
Anglada, Bower, Carkner, Chen, Chiang, Dougherty, Drake, Dreher, Felli, Furuya, Garay, Garay, Gu, Güdel, Güdel, Harper, Kai, Kaufmann, Lestrade, Lim, Lim, Lim, Lucy, Magazzú, Osten, Panagia, Reipurth, Rodríguez, S.M. White, Simon, Stine, Trigilio, van den Oord, Vernazza, White, White, White, White, White, Wood, Wood, Wright, Zirin   +42 more
core   +2 more sources

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source

An Augmented Reality Application for eLearning: Design of Stellar Escape Prototype for Immersive Space Exploration

Sukkur IBA Journal of Emerging Technologies
Education has undergone significant transformation in the digital age, leveraging innovative technologies and online platforms to enhance engagement and accessibility.
Aisha Muzaffar, Aiman Manahil, Amirita Dewani, Memoona Sami, Veena Kumari, Dua Agha   +5 more
doaj   +1 more source

KOI-3158: The oldest known system of terrestrial-size planets

EPJ Web of Conferences, 2015
The first discoveries of exoplanets around Sun-like stars have fueled efforts to find ever smaller worlds evocative of Earth and other terrestrial planets in the Solar System. While gas-giant planets appear to form preferentially around metal-rich stars,
Campante T. L., Barclay T., Swift J. J., Huber D., Adibekyan V. Zh., Cochran W., Burke C. J., Isaacson H., Quintana E. V., Davies G. R., Silva Aguirre V., Ragozzine D., Riddle R., Baranec C., Basu S., Chaplin W. J., Christensen-Dalsgaard J., Metcalfe T. S., Bedding T. R., Handberg R., Stello D., Brewer J. M., Hekker S., Karoff C., Kolbl R., Law N. M., Lundkvist M., Miglio A., Rowe J. F., Santos N. C., Van Laerhoven C., Arentoft T., Elsworth Y. P., Fischer D. A., Kawaler S. D., Kjeldsen H., Lund M. N., Marcy G. W., Sousa S. G., Sozzetti A., White T. R.   +40 more
doaj   +1 more source

Positional Astronomy and Stellar Masses [PDF]

Symposium - International Astronomical Union, 1985
In this paper are surveyed the combinations of data needed for mass determinations, the impact of radial-velocity and speckle observations, the 1983 catalog of visual-binary orbits, the current material for main-sequence and red-dwarf masses and the controversial methods and results on low mass objects.
openaire   +1 more source